Details of the Researcher

PHOTO

Gyokuyu Ri
Section
Graduate School of Engineering
Job title
Professor
Degree
  • 工学博士(東北大学)

  • 修士(工学)(天津大学)

Committee Memberships 48

  • 日本廃棄物資源循環学会 東北支部長

    2021/06 - Present

  • 日本水環境学会 東北支部長

    2021/06 - Present

  • Japan Society on Water Environment Board of director

    2021/06 - Present

  • 日本土木学会 理事

    2021/06 - Present

  • 廃棄物資源循環学会東北支部 幹事長

    2013/06 - Present

  • 日本水環境学会東北支部幹事長 日本水環境学会東北支部幹事長

    2011/06 - Present

  • 日本水環境学会東北支部幹事長 日本水環境学会東北支部幹事長

    2011/06 - Present

  • 日本水環境学会嫌気性生物処理研究委員会 委員長

    2011/04 - Present

  • 日本水環境学会嫌気性生物処理研究委員会 委員長

    2011/04 - Present

  • Journal of water Sustainability Editorial Board Member

    2011/01 - Present

  • Journal of water Sustainability Editorial Board Member

    2011/01 - Present

  • NEDO「新エネルギー技術フィールドテスト事業」外部評価委員会 委員

    2008/04 - Present

  • NEDO「新エネルギー技術フィールドテスト事業」外部評価委員会 委員

    2008/04 - Present

  • 国立環境研究所 客員研究員

    2007/04 - Present

  • 国立環境研究所 客員研究員

    2007/04 - Present

  • 雑誌「環境技術」 編集委員

    2005/10 - Present

  • 雑誌「環境技術」 編集委員

    2005/10 - Present

  • 「(中国)環境科学学報」 編集委員

    2005/01 - Present

  • 「(中国)環境科学学報」 編集委員

    2005/01 - Present

  • 廃棄物資源循環学会東北支部 幹事長

    2013/06 - 2018/06

  • 廃棄物学会東北支部幹事 幹事

    2007/04 - 2013/06

  • 廃棄物学会東北支部幹事 幹事

    2007/04 - 2013/06

  • バイオガス製造設備に係る調査委員会 バイオガス製造設備に係る調査委員会委員

    2012/04 - 2013/03

  • バイオガス製造設備に係る調査委員会 バイオガス製造設備に係る調査委員会委員

    2012/04 - 2013/03

  • 土木学会環境工学委員会 委員兼幹事

    2009/04 - 2013/03

  • 土木学会環境工学委員会論文小委員会 委員

    2009/04 - 2013/03

  • 土木学会環境工学委員会 委員兼幹事

    2009/04 - 2013/03

  • 土木学会環境工学委員会論文小委員会 委員

    2009/04 - 2013/03

  • 土木学会環境工学委員会 下水道を核とした再生可能型都市システムの構築に関する調査小委員会 委員

    2009/06 - 2012/03

  • 土木学会環境工学委員会 下水道を核とした再生可能型都市システムの構築に関する調査小委員会 委員

    2009/06 - 2012/03

  • 下水道協会誌論文審査委員会 委員 委員

    2008/04 - 2012/03

  • 下水道協会誌論文審査委員会 委員 委員

    2008/04 - 2012/03

  • 日本水環境学会嫌気性生物処理研究委員会 幹事

    2000/04 - 2011/03

  • 日本水環境学会嫌気性生物処理研究委員会 幹事

    2000/04 - 2011/03

  • 地域資源循環技術センター バイオマス事業地区技術支援委員会 委員

    2008/04 - 2010/03

  • 地域資源循環技術センター バイオマス事業地区技術支援委員会 委員

    2008/04 - 2010/03

  • バイオマス利活用技術情報提供検討委員会 委員

    2007/04 - 2009/03

  • バイオマス利活用技術情報提供検討委員会 委員

    2007/04 - 2009/03

  • 土木学会環境工学委員会 下水道施設を核としたエネルギー・バイオマス利活用システムの最適化に関する小委員会 委員

    2006/06 - 2009/03

  • 土木学会環境工学委員会 下水道施設を核としたエネルギー・バイオマス利活用システムの最適化に関する小委員会 委員

    2006/06 - 2009/03

  • NEDOバイオマス等未利用エネルギー実証試験事業(焼酎粕のアルカリ水素メタン発酵技術によるエネルギー回収技術)に関する外部評価委員会委員 委員

    2005/08 - 2009/03

  • NEDOバイオマス等未利用エネルギー実証試験事業(焼酎粕のアルカリ水素メタン発酵技術によるエネルギー回収技術)に関する外部評価委員会委員 委員

    2005/08 - 2009/03

  • NEDOバイオマス等未利用エネルギー実証試験事業(コーヒー粕・茶粕等の未活用バイオマスエネルギーの変換・利用システム実証試験事業)・外部評価委員会委員 委員

    2003/09 - 2009/03

  • NEDOバイオマス等未利用エネルギー実証試験事業(コーヒー粕・茶粕等の未活用バイオマスエネルギーの変換・利用システム実証試験事業)・外部評価委員会委員 委員

    2003/09 - 2009/03

  • 日本有機資源協会・バイオガス推進委員会 副委員長

    2003/04 - 2006/03

  • 日本環境工学教授協会 幹事

    2003/04 - 2006/03

  • 日本有機資源協会・バイオガス推進委員会 副委員長

    2003/04 - 2006/03

  • 日本環境工学教授協会 幹事

    2003/04 - 2006/03

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Professional Memberships 7

  • Japanse Society of Water Treatment BIology

  • Society of Environmental Conservation Engineering

  • Japan Sewage Works Association

  • Japan Society of Material Cycles and Waste Management

  • The Japan Society on Water Environment

  • The Japan Society of Civil Engineers

  • International Water Association

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Research Interests 9

  • Anammox

  • Anaerobic Digestion

  • バイオマス

  • 廃棄物処理

  • 排水処理

  • 環境保全

  • 環境微生物

  • 水素発酵

  • メタン発酵

Research Areas 3

  • Environmental science/Agricultural science / Environmental load reduction/restoration technology /

  • Environmental science/Agricultural science / Environmental materials/recycling technology /

  • Social infrastructure (civil Engineering, architecture, disaster prevention) / Civil engineering (environmental systems) /

Awards 9

  1. 日本下水道協会「有功賞」

    2013/06/28 日本下水道協会 (優秀論文賞:循環式二段階嫌気性消化による初沈汚泥からのバイオエネルギー回収)

  2. 水環境学会誌平成23年年間優秀論文賞(メタウォーター賞)

    2012/09/10 日本水環境学会

  3. 第14回(2012年度)環境技術学会論文賞

    2012/09/03 環境技術学会 優秀論文賞

  4. 第45環境工学研究フォーラム論文賞

    2009/11/27 土木学会環境工学委員会

  5. 月刊「水」論文賞

    2009/04 月刊「水」発行所

  6. 「Bioresouce Technology」 Top Reviewer in 2008

    2009/02 Elsevier

  7. 日本下水道協会論文奨励賞

    2008/06 日本下水道協会

  8. 第42回環境工学研究フォーラム論文賞(2006年度)

    2006/11/17 土木学会環境工学委員会

  9. 第37回環境工学研究ファーラム論文賞(2000年度)

    2000/12 土木学会環境工学委員会

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Papers 453

  1. Evaluation of sewage treatment performance and duckweed biomass production efficiency in a primary sedimentation basin + duckweed pond + downflow hanging sponge (PSB + DWP + DHS) system

    Kengo Kubota, Takashi Otani, Teruki Hariu, Takumi Jin, Tadashi Tagawa, Masaaki Morikawa, Yu-You Li

    Journal of Water Process Engineering 65 105818-105818 2024/08

    Publisher: Elsevier BV

    DOI: 10.1016/j.jwpe.2024.105818  

    ISSN: 2214-7144

  2. Mass flow and microbial shifts in recirculated two-phase anaerobic digestion for biohythane production: Effect of hydraulic retention time

    Yu Qin, Aijun Zhu, Jing Wu, Lu Li, Toshimasa Hojo, Kengo Kubota, Yu-You Li

    Journal of Cleaner Production 468 143092-143092 2024/08

    Publisher: Elsevier BV

    DOI: 10.1016/j.jclepro.2024.143092  

    ISSN: 0959-6526

  3. Biomethane recovery and prokaryotic shifts in anaerobic co-digestion of food waste and paper waste in organic fraction of municipal solid waste: Effect of paper content

    Lu Li, Yi Bu, Wen Feng, Kengo Kubota, Yang Pan, Yong Huang, Yu-You Li, Yu Qin

    Bioresource Technology 406 130964-130964 2024/08

    Publisher: Elsevier BV

    DOI: 10.1016/j.biortech.2024.130964  

    ISSN: 0960-8524

  4. A novel method for the whole-cell detection of environmental microorganisms using hemin and tyramide signal amplification (Hemin-TSA) with a desired fluorescent dye

    Kampachiro Urasaki, Yu-You Li, Kengo Kubota

    Systematic and Applied Microbiology 46 (6) 126473-126473 2023/11

    Publisher: Elsevier BV

    DOI: 10.1016/j.syapm.2023.126473  

    ISSN: 0723-2020

  5. Propidium monoazide - polymerase chain reaction reveals viable microbial community shifts in anaerobic membrane bioreactors treating domestic sewage at low temperature

    Jialing Ni, Jiayuan Ji, Yu-You Li, Kengo Kubota

    Bioresource Technology 2023/11

    DOI: 10.1016/j.biortech.2023.129564  

  6. Enhanced digestion of sludge via co-digestion with food waste in a high-solid anaerobic membrane bioreactor: Performance evaluation and microbial response

    Yemei Li, Jialing Ni, Hui Cheng, Guangze Guo, Tao Zhang, Aijun Zhu, Yu Qin, Yu-You Li

    Science of The Total Environment 899 165701-165701 2023/11

    Publisher: Elsevier BV

    DOI: 10.1016/j.scitotenv.2023.165701  

    ISSN: 0048-9697

  7. Anaerobic Membrane Bioreactors for Municipal Wastewater Treatment, Sewage Sludge Digestion and Biogas Upgrading: A Review

    Yemei Li, Yuanyuan Ren, Jiayuan Ji, Yu-You Li, Takuro Kobayashi

    Sustainability 2023/10/22

    DOI: 10.3390/su152015129  

  8. Improved Properties and Enhancement Strategies of Hydroxyapatite-Based Functional Granular Sludge for a High-Rate Partial Nitritation/Anammox System

    Yujie Chen, Gaoxuefeng Feng, Guangze Guo, Kampachiro Urasaki, Kengo Kubota, Yu-You Li

    Environmental Science & Technology 57 (19) 7624-7633 2023/05/04

    Publisher: American Chemical Society (ACS)

    DOI: 10.1021/acs.est.3c00491  

    ISSN: 0013-936X

    eISSN: 1520-5851

  9. Anammox upflow hybrid reactor: Nitrogen removal performance and potential for phosphorus recovery

    Ying Song, Jialing Ni, Yan Guo, Kengo Kubota, Wei-Kang Qi, Yu-You Li

    Chemosphere 313 137580-137580 2023/02

    Publisher: Elsevier BV

    DOI: 10.1016/j.chemosphere.2022.137580  

    ISSN: 0045-6535

  10. Key factors improving the stability and the loading capacity of nitrogen removal in a hydroxyapatite (HAP)-enhanced one-stage partial nitritation/anammox process

    Yujie Chen, Yan Guo, Gaoxuefeng Feng, Kampachiro Urasaki, Guangze Guo, Yu Qin, Kengo Kubota, Yu-You Li

    Chemical Engineering Journal 452 139589-139589 2023/01

    Publisher: Elsevier BV

    DOI: 10.1016/j.cej.2022.139589  

    ISSN: 1385-8947

  11. Carbon-neutral treatment of N, N-dimethylformamide-containing wastewater by up-flow anaerobic sludge blanket: CO<inf>2</inf> reduction and bio-energy cleaner production

    Zhe Kong, Yi Xue, Tianwei Hao, Jiang Wu, Yanlong Zhang, Chao Rong, Hong Chen, Liuying Song, Dapeng Li, Yang Pan, Yu You Li

    Journal of Cleaner Production 380 2022/12/20

    DOI: 10.1016/j.jclepro.2022.134880  

    ISSN: 0959-6526

  12. Material mass balance and elemental flow analysis in a submerged anaerobic membrane bioreactor for municipal wastewater treatment towards low-carbon operation and resource recovery

    Runda Du, Yisong Hu, Shiori Nitta, Jiayuan Ji, Yu-You Li

    SCIENCE OF THE TOTAL ENVIRONMENT 852 2022/12

    DOI: 10.1016/j.scitotenv.2022.158586  

    ISSN: 0048-9697

    eISSN: 1879-1026

  13. Long term operation performance and membrane fouling mechanisms of anaerobic membrane bioreactor treating waste activated sludge at high solid concentration and high flux

    Guangze Guo, Yemei Li, Shitong Zhou, Yujie Chen, Kampachiro Urasaki, Yu Qin, Kengo Kubota, Yu-You Li

    Science of The Total Environment 846 157435-157435 2022/11

    Publisher: Elsevier BV

    DOI: 10.1016/j.scitotenv.2022.157435  

    ISSN: 0048-9697

  14. Biomass retention and microbial segregation to offset the impacts of seasonal temperatures for a pilot-scale integrated fixed-film activated sludge partial nitritation-anammox (IFAS-PN/A) treating anaerobically pretreated municipal wastewater

    Chao Rong, Zibin Luo, Tianjie Wang, Yu Qin, Jiang Wu, Yan Guo, Yisong Hu, Zhe Kong, Taira Hanaoka, Shinichi Sakemi, Masami Ito, Shigeki Kobayashi, Masumi Kobayashi, Yu You Li

    Water Research 225 2022/10/15

    DOI: 10.1016/j.watres.2022.119194  

    ISSN: 0043-1354

    eISSN: 1879-2448

  15. Recent progress in noble metal electrocatalysts for nitrogen-to-ammonia conversion Peer-reviewed

    Xufeng Rao, Minmin Liu, Meifang Chien, Chihiro Inoue, Jiujun Zhang, Yuyu Liu

    Renewable and Sustainable Energy Reviews 168 112845-112845 2022/10

    Publisher: Elsevier BV

    DOI: 10.1016/j.rser.2022.112845  

    ISSN: 1364-0321

  16. Carbon-neutral treatment of N, N-dimethylformamide-containing industrial wastewater by anaerobic membrane bioreactor (AnMBR): Bio-energy recovery and CO<inf>2</inf> emission reduction

    Zhe Kong, Yi Xue, Tianwei Hao, Yanlong Zhang, Jiang Wu, Hong Chen, Liuying Song, Chao Rong, Dapeng Li, Yang Pan, Yong Li, Yu You Li

    Bioresource Technology 358 2022/08

    DOI: 10.1016/j.biortech.2022.127396  

    ISSN: 0960-8524

    eISSN: 1873-2976

  17. Fast formation of anammox granules using a nitrification-denitrification sludge and transformation of microbial community

    Lan Lin, Zibin Luo, Kyuto Ishida, Kampachiro Urasaki, Kengo Kubota, Yu-You Li

    Water Research 221 118751-118751 2022/08

    Publisher: Elsevier BV

    DOI: 10.1016/j.watres.2022.118751  

    ISSN: 0043-1354

  18. Recent developments of anaerobic membrane bioreactors for municipal wastewater treatment and bioenergy recovery: Focusing on novel configurations and energy balance analysis

    Yisong Hu, Xuli Cai, Yi Xue, Runda Du, Jiayuan Ji, Rong Chen, Daisuke Sano, Yu-You Li

    Journal of Cleaner Production 356 131856-131856 2022/07

    Publisher: Elsevier {BV}

    DOI: 10.1016/j.jclepro.2022.131856  

  19. Submerged anaerobic membrane bioreactor applied for mainstream municipal wastewater treatment at a low temperature: Sludge yield, energy balance and membrane filtration behaviors

    Jiayuan Ji, Runda Du, Jialing Ni, Yujie Chen, Yisong Hu, Yu Qin, Toshimasa Hojo, Yu-You Li

    Journal of Cleaner Production 355 131831-131831 2022/06

    Publisher: Elsevier BV

    DOI: 10.1016/j.jclepro.2022.131831  

    ISSN: 0959-6526

  20. Sodium hypochlorite induced inhibition in anaerobic digestion and possible approach to maintain methane fermentation performance

    Jialing Ni, Jiayuan Ji, Kengo Kubota, Yu-You Li

    Bioresource Technology 352 127096-127096 2022/05

    Publisher: Elsevier BV

    DOI: 10.1016/j.biortech.2022.127096  

    ISSN: 0960-8524

  21. Reclamation of pharmaceutical wastewater by UAF, contact oxidation, and auto brush-cleaning aiding nano ZrO<inf>2</inf> coated ceramic membrane MBR - an industrial-scale practice and functional microbial diversity

    Jianyang Song, Hanyang Wu, Haiming Yuan, Jiang Wu, Weikang Qi, Jianbo Lu, Weicheng Li, Yu You Li

    Journal of Water Process Engineering 46 2022/04

    DOI: 10.1016/j.jwpe.2022.102563  

    ISSN: 2214-7144

  22. Seasonal temperatures impact on the mass flows in the innovative integrated process of anaerobic membrane bioreactor and one-stage partial nitritation-anammox for the treatment of municipal wastewater

    Chao Rong, Tianjie Wang, Zibin Luo, Yan Guo, Zhe Kong, Jiang Wu, Yu Qin, Taira Hanaoka, Shinichi Sakemi, Masami Ito, Shigeki Kobayashi, Masumi Kobayashi, Yu You Li

    Bioresource Technology 349 2022/04

    DOI: 10.1016/j.biortech.2022.126864  

    ISSN: 0960-8524

    eISSN: 1873-2976

  23. Application of deep learning for predicting the treatment performance of real municipal wastewater based on one-year operation of two anaerobic membrane bioreactors

    Gaoyang Li, Jiayuan Ji, Jialing Ni, Sirui Wang, Yuting Guo, Yisong Hu, Siwei Liu, Sheng-Feng Huang, Yu-You Li

    Science of The Total Environment 813 151920-151920 2022/03

    Publisher: Elsevier BV

    DOI: 10.1016/j.scitotenv.2021.151920  

    ISSN: 0048-9697

  24. Unveiling the characterization and development of prokaryotic community during the start-up and long-term operation of a pilot-scale anaerobic membrane bioreactor for the treatment of real municipal wastewater

    Zhe Kong, Lu Li, Jiang Wu, Chao Rong, Tianjie Wang, Rong Chen, Daisuke Sano, Yu-You Li

    Science of The Total Environment 813 152643-152643 2022/03

    Publisher: Elsevier BV

    DOI: 10.1016/j.scitotenv.2021.152643  

    ISSN: 0048-9697

  25. The performance of simultaneous partial nitritation, anammox, denitrification, and COD oxidation (SNADCO) method in the treatment of digested effluent of fish processing wastewater

    Eli Hendrik Sanjaya, Yujie Chen, Yan Guo, Jiang Wu, Hong Chen, Mohd Fadhil Md Din, Yu You Li

    Bioresource Technology 346 2022/02

    DOI: 10.1016/j.biortech.2021.126622  

    ISSN: 0960-8524

    eISSN: 1873-2976

  26. Microbial characteristics in anaerobic membrane bioreactor treating domestic sewage: Effects of HRT and process performance Peer-reviewed

    Jialing Ni, Jiayuan Ji, Yu-You Li, Kengo Kubota

    Journal of Environmental Sciences 111 392-399 2022/01

    Publisher: Elsevier BV

    DOI: 10.1016/j.jes.2021.04.022  

    ISSN: 1001-0742

  27. Methanogenic performance and microbial community during thermophilic digestion of food waste and sewage sludge in a high-solid anaerobic membrane bioreactor

    Yemei Li, Jialing Ni, Hui Cheng, Aijun Zhu, Guangze Guo, Yu Qin, Yu-You Li

    Bioresource Technology 342 2021/12/01

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.biortech.2021.125938  

    ISSN: 1873-2976 0960-8524

  28. Identification of sustainable filtration mode of an anaerobic membrane bioreactor for wastewater treatment towards low-fouling operation and efficient bioenergy production

    Yisong Hu, Runda Du, Shiori Nitta, Jiayuan Ji, Chao Rong, Xuli Cai, Yu Qin, Yu-You Li

    Journal of Cleaner Production 329 129686-129686 2021/12

    Publisher: Elsevier {BV}

    DOI: 10.1016/j.jclepro.2021.129686  

  29. Efficient phosphorus recovery by enhanced hydroxyapatite formation in a high loading anammox expanded bed reactor at 15 °C Peer-reviewed

    Haiyuan Ma, Yuanfan Zhang, Yi Xue, Kengo Kubota, Yu-You Li

    Chemical Engineering Journal 425 130636-130636 2021/12

    Publisher: Elsevier BV

    DOI: 10.1016/j.cej.2021.130636  

    ISSN: 1385-8947

  30. Chemical oxygen demand and nitrogen transformation in a large pilot-scale plant with a combined submerged anaerobic membrane bioreactor and one-stage partial nitritation-anammox for treating mainstream wastewater at 25 °C

    Chao Rong, Zibin Luo, Tianjie Wang, Yan Guo, Zhe Kong, Jiang Wu, Jiayuan Ji, Yu Qin, Taira Hanaoka, Shinichi Sakemi, Masami Ito, Shigeki Kobayashi, Masumi Kobayashi, Yu You Li

    Bioresource Technology 341 2021/12

    DOI: 10.1016/j.biortech.2021.125840  

    ISSN: 0960-8524

    eISSN: 1873-2976

  31. A successful start-up of an anaerobic membrane bioreactor (AnMBR) coupled mainstream partial nitritation-anammox (PN/A) system: A pilot-scale study on in-situ NOB elimination, AnAOB growth kinetics, and mainstream treatment performance

    Jiang Wu, Zhe Kong, Zibin Luo, Yu Qin, Chao Rong, Tianjie Wang, Taira Hanaoka, Shinichi Sakemi, Masami Ito, Shigeki Kobayashi, Masumi Kobayashi, Kai-Qin Xu, Takuro Kobayashi, Kengo Kubota, Yu-You Li

    Water Research 207 117783-117783 2021/12

    Publisher: Elsevier BV

    DOI: 10.1016/j.watres.2021.117783  

    ISSN: 0043-1354

  32. Architecture of HAP-anammox granules contributed to high capacity and robustness of nitrogen removal under 7°C

    Ying Song, Lan Lin, Jialing Ni, Haiyuan Ma, Wei-Kang Qi, Yu-You Li

    Water Research 206 2021/11/01

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.watres.2021.117764  

    ISSN: 1879-2448 0043-1354

  33. Evaluation of bio-energy recovery from the anaerobic treatment of municipal wastewater by a pilot-scale submerged anaerobic membrane bioreactor (AnMBR) at ambient temperature

    Zhe Kong, Lu Li, Jiang Wu, Tianjie Wang, Chao Rong, Zibin Luo, Yang Pan, Dapeng Li, Yong Li, Yong Huang, Yu You Li

    Bioresource Technology 339 2021/11

    DOI: 10.1016/j.biortech.2021.125551  

    ISSN: 0960-8524

    eISSN: 1873-2976

  34. STRATEGY FOR CONTROLLING NITROUS OXIDE EMISSION IN OXIDATION DITCH REACTOR BY OPTIMIZATION OF STIRRING METHODOLOGY: CONTINUOUS MONITORING AND LARGE-SCALE EXPERIMENT IN FULL-SCALE SEWAGE TREATMENT PLANT Peer-reviewed

    Shohei OTOMO, Satoru SHIBATA, Yu-You LI, Fumiaki TAKAKAI, Naoyuki MIYATA, Shuhei MASUDA

    土木学会論文集 G(環境)(Web) 77 (7) III_71-III_82 2021/11

    DOI: 10.2208/jscejer.77.7_III_71  

    ISSN: 2185-6648

  35. The impact of calcium supplementation on methane fermentation and ammonia inhibition of fish processing wastewater Peer-reviewed

    Eli Hendrik Sanjaya, Hui Cheng, Yu Qin, Kengo Kubota, Yu-You Li

    Bioresource Technology 337 125471-125471 2021/10

    Publisher: Elsevier BV

    DOI: 10.1016/j.biortech.2021.125471  

    ISSN: 0960-8524

  36. Sequence-Specific Capture of Oligonucleotide Probes (SCOPE): a Simple and Rapid Microbial rRNA Quantification Method Using a Molecular Weight Cutoff Membrane International-journal Peer-reviewed

    Yasuyuki Takemura, Yuji Sekiguchi, Kazuaki Syutsubo, Hideki Harada, Tatsuo Omura, Yu-You Li, Kengo Kubota

    Applied and Environmental Microbiology 87 (20) e01167-21 2021/09/28

    Publisher: American Society for Microbiology

    DOI: 10.1128/aem.01167-21  

    ISSN: 0099-2240

    eISSN: 1098-5336

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    Microorganisms play integral roles in the earth’s ecosystem. Microbial populations and their activities significantly affect the global nutrient cycles.

  37. Important effects of temperature on treating real municipal wastewater by a submerged anaerobic membrane bioreactor: Removal efficiency, biogas, and microbial community Peer-reviewed

    Jiayuan Ji, Jialing Ni, Akito Ohtsu, Naoko Isozumi, Yisong Hu, Runda Du, Yujie Chen, Yu Qin, Kengo Kubota, Yu-You Li

    Bioresource Technology 336 125306-125306 2021/09

    Publisher: Elsevier BV

    DOI: 10.1016/j.biortech.2021.125306  

    ISSN: 0960-8524

  38. Achieving superior nitrogen removal performance in low-strength ammonium wastewater treatment by cultivating concentrated, highly dispersive, and easily settleable granule sludge in a one-stage partial nitritation/anammox-HAP reactor Peer-reviewed

    Yan Guo, Chenglei Xie, Yujie Chen, Kampachiro Urasaki, Yu Qin, Kengo Kubota, Yu-You Li

    Water Research 200 117217-117217 2021/07

    Publisher: Elsevier BV

    DOI: 10.1016/j.watres.2021.117217  

    ISSN: 0043-1354

  39. Niche differentiation of phenol-degrading microorganisms in UASB granular sludge as revealed by fluorescence in situ hybridization

    Kengo Kubota, Kei Igarashi, Masayoshi Yamada, Yasuyuki Takemura, Yu-You Li, Hideki Harada

    Engineering 9 61-66 2021/07

    Publisher: Elsevier BV

    DOI: 10.1016/j.eng.2021.05.012  

    ISSN: 2095-8099

  40. One-year operation of a 20-L submerged anaerobic membrane bioreactor for real domestic wastewater treatment at room temperature: Pursuing the optimal HRT and sustainable flux. International-journal

    Jiayuan Ji, Yujie Chen, Yisong Hu, Akito Ohtsu, Jialing Ni, Yemei Li, Satoshi Sakuma, Toshimasa Hojo, Rong Chen, Yu-You Li

    The Science of the total environment 775 145799-145799 2021/06/25

    DOI: 10.1016/j.scitotenv.2021.145799  

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    A 20 L hollow-fiber submerged anaerobic membrane bioreactor (SAnMBR) was used to treat real domestic wastewater at 25 °C with hydraulic retention times (HRTs) ranging from 4 to 12 h. The process performance was evaluated by organic removal efficiency, biogas production, sludge yield, and filtration behaviors during one-year's operation. For HRTs ranging between 6 and 12 h, the AnMBR showed good organic removal efficiency with chemical oxygen demand (COD) and biochemical oxygen demand (BOD) removal efficiencies of about 89% and 93%, respectively. The biogas yield was 0.26 L-gas/g-CODfed, with approximately 80% methane content, and the sludge yield was 0.07-0.11 g-VSS/g-CODrem. While at an HRT of 4 h, with the higher wastewater treatment capacity and organic loading rate (OLR), the biogas production was lower (0.17 L-gas/g-CODfed), and the sludge production was higher (0.22 g-VSS/g-CODrem). The organic removal performance (COD 84% and BOD 89%) at HRT of 4 h was acceptable due to the effective separation effect of the membrane filtration process. According to COD balance analysis, the low biogas yield and high sludge yield at HRT of 4 h were due to insufficient biodegradation under an OLR of 2.05 g-COD/L-reactor/d. Theoretical calculations based on Henry's law indicate that the ideal methane content in the biogas should be 82-85% when the operational temperature was 25 °C. To achieve a high flux and sustainable AnMBR operation, the impact of mixed liquor suspended solid (MLSS) and gas sparging velocity (GSV) on the filtration performance was analyzed. The critical flux increased with increase in the GSV from 24.2 to 174.3 m/h, but decreased with increase in the MLSS concentration from 8.2 to 20.2 g/L. Therefore, decreasing fouling rate to 0.8-1.2 kPa/d by efficiently controlling GSV and MLSS, sustainable operation could be achieved at a flux of 0.34 m/d.

  41. Improved stability of up-flow anaerobic sludge blanket reactor treating starch wastewater by pre-acidification: Impact on microbial community and metabolic dynamics

    Jiang Wu, Bo Jiang, Zhe Kong, Chongyang Yang, Lu Li, Bo Feng, Zibin Luo, Kai-Qin Xu, Takuro Kobayashi, Yu-You Li

    BIORESOURCE TECHNOLOGY 326 2021/04

    DOI: 10.1016/j.biortech.2021.124781  

    ISSN: 0960-8524

    eISSN: 1873-2976

  42. Sludge yield and degradation of suspended solids by a large pilot-scale anaerobic membrane bioreactor for the treatment of real municipal wastewater at 25 °C

    Zhe Kong, Jiang Wu, Chao Rong, Tianjie Wang, Lu Li, Zibin Luo, Jiayuan Ji, Taira Hanaoka, Shinichi Sakemi, Masami Ito, Shigeki Kobayashi, Masumi Kobayashi, Yu Qin, Yu You Li

    Science of the Total Environment 759 2021/03/10

    DOI: 10.1016/j.scitotenv.2020.143526  

    ISSN: 0048-9697

    eISSN: 1879-1026

  43. Biochar and GAC intensify anaerobic phenol degradation via distinctive adsorption and conductive properties Peer-reviewed

    Qian Li, Xin Gao, Yaqian Liu, Gaojun Wang, Yu-You Li, Daisuke Sano, Xiaochang Wang, Rong Chen

    Journal of Hazardous Materials 124183-124183 2021/03

    Publisher: Elsevier BV

    DOI: 10.1016/j.jhazmat.2020.124183  

    ISSN: 0304-3894

  44. Large pilot-scale submerged anaerobic membrane bioreactor for the treatment of municipal wastewater and biogas production at 25 °C

    Zhe Kong, Jiang Wu, Chao Rong, Tianjie Wang, Lu Li, Zibin Luo, Jiayuan Ji, Taira Hanaoka, Shinichi Sakemi, Masami Ito, Shigeki Kobayashi, Masumi Kobayashi, Yu Qin, Yu You Li

    Bioresource Technology 319 2021/01

    DOI: 10.1016/j.biortech.2020.124123  

    ISSN: 0960-8524

    eISSN: 1873-2976

  45. Long-term Assessment of N2O Emission Factor in Full-Scale Oxidation Ditch Reactor Considering Spatiotemporal Distribution Peer-reviewed

    Shohei Otomo, Akihiko Terada, Yu You Li, Kazuya Nishitoba, Fumiaki Takakai, Kunihiro Okano, Naoyuki Miyata, Shuhei Masuda

    Journal of Water and Environment Technology 19 (3) 139-152 2021

    DOI: 10.2965/JWET.20-145  

    eISSN: 1348-2165

  46. Application of two anaerobic membrane bioreactors with different pore size membranes for municipal wastewater treatment. International-journal

    Jiayuan Ji, Satoshi Sakuma, Jialing Ni, Yujie Chen, Yisong Hu, Akito Ohtsu, Rong Chen, Hui Cheng, Yu Qin, Toshimasa Hojo, Kengo Kubota, Yu-You Li

    The Science of the total environment 745 140903-140903 2020/11/25

    DOI: 10.1016/j.scitotenv.2020.140903  

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    Pore size is one of the most important properties in the successful operation of membrane-based bioprocesses for the treatment of municipal wastewater. The characteristics of two anaerobic membrane bioreactors (AnMBRs), one with a hollow fiber membrane of 0.4 μm pore size (AnMBR1), and the other with a membrane of 0.05 μm pore size (AnMBR2) were investigated for the treatment of real municipal wastewater at room temperature (25 °C) under varied hydraulic retention times (HRTs). Process performance was evaluated in terms of organic removal efficiency, biogas production and membrane filtration behaviours during a long-term continuous operation. Both AnMBRs showed good organic removal performance with COD and BOD removal efficiencies of around 89% and 93%, respectively. High energy recovery potential was achieved, with the biogas yield ranging between 0.20 and 0.26 L-gas/g-CODrem and a methane content of approximately 75%. The differences in the membrane filtration behaviours in the two AnMBRs included different permeate flux and total filtration resistance (Rt). In the AnMBR with a 0.4 μm pore size membrane, an average Rt of 1.08 × 10^12 m-1 was obtained even when the permeate flux was a high 0.274 m/day, while a higher average Rt of 1.51 × 10^12 m-1 was observed in the AnMBR with 0.05 μm pore size membrane even when the flux was a low 0.148 m/day. The off-line membrane cleaning strategy used for AnMBR1 indicated that the membrane restoration efficiency was 90.2%.

  47. Improving hydrogen and methane co-generation in cascading dark fermentation and anaerobic digestion: The effect of magnetite nanoparticles on microbial electron transfer and syntrophism

    Jun Cheng, Hui Li, Lingkan Ding, Junhu Zhou, Wenlu Song, Yu-You Li, Richen Lin

    Chemical Engineering Journal 397 2020/10/01

    Publisher: Elsevier B.V.

    DOI: 10.1016/j.cej.2020.125394  

    ISSN: 1385-8947

  48. Temperature-phased anaerobic co-digestion of food waste and paper waste with and without recirculation: Biogas production and microbial structure

    Lu Li, Zhe Kong, Yu Qin, Jing Wu, Aijun Zhu, Benyi Xiao, Jialing Ni, Kengo Kubota, Yu-You Li

    Science of the Total Environment 724 2020/07/01

    Publisher: Elsevier B.V.

    DOI: 10.1016/j.scitotenv.2020.138168  

    ISSN: 1879-1026 0048-9697

  49. Effect of treated sewage characteristics on duckweed biomass production and microbial communities. International-journal

    Hiroshi Iwano, Syo Hatohara, Tadashi Tagawa, Hideyuki Tamaki, Yu-You Li, Kengo Kubota

    Water science and technology : a journal of the International Association on Water Pollution Research 82 (2) 292-302 2020/07

    DOI: 10.2166/wst.2020.168  

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    Duckweed biomass production in a duckweed pond fed with three differently treated sewage (i.e. sewage treated by primary sedimentation (PS); conventional activated sludge process (CAS); and downflow hanging sponge process (DHS)) was evaluated in order to assess the effects of water quality on biomass yield. Higher and stable biomass production was observed when the duckweed pond was fed with PS or DHS-effluent than with CAS-effluent, evidently due to the difference in nutrient loads. Availability of nutrients, especially phosphorus, affected the biomass production rate: higher the nutrient, faster the production. Microbial community analysis revealed that the members of Rhizobiales were likely to contribute to stable and high biomass growth. From the results of the study, a sewage treatment system consisting of a primary sedimentation followed by a duckweed pond and a tertiary treatment unit can be proposed to maximize biomass production without compromising treatment objectives. Size and operational parameters of the duckweed pond should be determined primarily based on the nutrient availability in the influent water to maximize duckweed growth.

  50. Hydrothermal alkali pretreatment contributes to fermentative methane production of a typical lipid from food waste through co-production of hydrogen with methane

    Jun Cheng, Liangchen Yue, Junjie Hua, Haiquan Dong, Junhu Zhou, Yu-You Li

    Bioresource Technology 306 2020/06/01

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.biortech.2020.123164  

    ISSN: 1873-2976 0960-8524

  51. Improving biohydrogen production through dark fermentation of steam-heated acid pretreated Alternanthera philoxeroides by mutant Enterobacter aerogenes ZJU1

    Wenlu Song, Lingkan Ding, Min Liu, Jun Cheng, Junhu Zhou, Yu-You Li

    Science of the Total Environment 716 2020/05/10

    Publisher: Elsevier B.V.

    DOI: 10.1016/j.scitotenv.2019.134695  

    ISSN: 1879-1026 0048-9697

  52. Uncovering Viable Microbiome in Anaerobic Sludge Digesters by Propidium Monoazide (PMA)-PCR

    Jialing Ni, Shingo Hatori, Yin Wang, Yu-You Li, Kengo Kubota

    Microbial Ecology 79 (4) 925-932 2020/05/01

    Publisher: Springer

    DOI: 10.1007/s00248-019-01449-w  

    ISSN: 1432-184X 0095-3628

  53. Pre-acidification greatly improved granules physicochemical properties and operational stability of Upflow anaerobic sludge Blanket (UASB) reactor treating low-strength starch wastewater

    Jiang Wu, Bo Jiang, Bo Feng, Lu Li, Siti Nur Fatihah Moideen, Hong Chen, Chaimaa Mribet, Yu You Li

    Bioresource Technology 302 2020/04

    DOI: 10.1016/j.biortech.2020.122810  

    ISSN: 0960-8524

    eISSN: 1873-2976

  54. Simultaneous nitrogen removal and phosphorus recovery using an anammox expanded reactor operated at 25 degrees C

    Haiyuan Ma, Yi Xue, Yuanfan Zhang, Takuro Kobayashi, Kengo Kubota, Yu-You Li

    WATER RESEARCH 172 2020/04

    DOI: 10.1016/j.watres.2020.115510  

    ISSN: 0043-1354

    eISSN: 1879-2448

  55. Effects of harvest month on biochemical composition of alligator weed for biohydrogen and biomethane cogeneration:Identifying critical variations in microbial communities

    Hui Li, Wenlu Song, Jun Cheng, Lingkan Ding, Junhu Zhou, Yu-You Li

    International Journal of Hydrogen Energy 45 (7) 4161-4173 2020/02/07

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.ijhydene.2019.11.208  

    ISSN: 0360-3199

  56. Development of an integrated anaerobic/aerobic bioreactor for biodegradation of recalcitrant azo dye and bioenergy recovery: HRT effects and functional resilience

    Samir I. Gadow, Yu-You Li

    Bioresource Technology Reports 9 2020/02/01

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.biteb.2020.100388  

    ISSN: 2589-014X

  57. EFFECT OF TEMPERATURE ON METHANOGENIC TREATMENT OF REAL SEWAGE TREATMENT USING AnMBR

    Naoko ISOZUMI, Jiayuan JI, Yu-You LI

    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 76 (7) III{\_}173-III{\_}179 2020

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscejer.76.7_iii_173  

    ISSN: 2185-6648

  58. Simultaneous removal of lead(II) and nitrate from water at low voltage Peer-reviewed

    Xufeng Rao, Qingyu Li, Chihiro Inoue, Irshad Ahmad, Jin Yi, Yuyu Liu, Jiujun Zhang

    Journal of Water Process Engineering 32 100940 2019/12

  59. Enhanced anaerobic performance and SMD process in treatment of sulfate and organic S-rich TMBA manufacturing wastewater by micro-electric field–zero valent iron-UASB

    Weicheng Li, Q. Niu, J. Wu, Xiao Luan, Weikang Qi, Yu Zhang, Yu You Li, Yingxin Gao, Min Yang

    Journal of Hazardous Materials 379 2019/11/05

    DOI: 10.1016/j.jhazmat.2019.05.088  

    ISSN: 0304-3894

    eISSN: 1873-3336

  60. Bioenergy production from duckweed cultivated using DHS-treated sewage Peer-reviewed

    Iwano H, Hatohara S, Tagawa T, Tamaki H, Li Y.Y, Kubota K

    Journal of Japan Sewage Works Association 56 (685) 127-134 2019/11

  61. Characterization of the effect of surfactant on biomass adaptation and microbial community in sewage treatment by anaerobic membrane bioreactor

    Yulun Nie, Rong Chen, Xike Tian, Yu-You Li

    Journal of Industrial and Engineering Chemistry 76 268-276 2019/08/25

    Publisher: Korean Society of Industrial Engineering Chemistry

    DOI: 10.1016/j.jiec.2019.03.051  

    ISSN: 2234-5957 1226-086X

  62. Temperature effects on the methanogenesis enhancement and sulfidogenesis suppression in the UASB treatment of sulfate-rich methanol wastewater

    Jiang Wu, Quanli Liu, Bo Feng, Zhe Kong, Bo Jiang, Yu You Li

    International Biodeterioration and Biodegradation 142 182-190 2019/08

    DOI: 10.1016/j.ibiod.2019.05.013  

    ISSN: 0964-8305

  63. Strategy of adjusting recirculation ratio for biohythane production via recirculated temperature-phased anaerobic digestion of food waste

    Yu Qin, Jing Wu, Benyi Xiao, Ming Cong, Toshimasa Hojo, Jun Cheng, Yu-You Li

    Energy 179 1235-1245 2019/07/15

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.energy.2019.04.182  

    ISSN: 0360-5442

  64. Hydrothermal heating with sulphuric acid contributes to improved fermentative hydrogen and methane co-generation from Dianchi Lake algal bloom

    Jun Cheng, Liangchen Yue, Junjie Hua, Haiquan Dong, Yu-You Li, Junhu Zhou, Richen Lin

    Energy Conversion and Management 192 282-291 2019/07/15

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.enconman.2019.04.003  

    ISSN: 0196-8904

  65. Competitive dynamics of anaerobes during long-term biological sulfate reduction process in a UASB reactor

    Hong Chen, Jiang Wu, Bing Liu, Yu-you Li, Hidenari Yasui

    Bioresource Technology 280 173-182 2019/05

    Publisher: Elsevier BV

    DOI: 10.1016/j.biortech.2019.02.023  

    ISSN: 0960-8524

  66. Successful operation performance and syntrophic micro-granule in partial nitritation and anammox reactor treating low-strength ammonia wastewater

    Rong Chen, Jiayuan Ji, Yujie Chen, Yasuyuki Takemura, Yuan Liu, Kengo Kubota, Haiyuan Ma, Yu-You Li

    Water Research 155 288-299 2019/05

    Publisher: Elsevier BV

    DOI: 10.1016/j.watres.2019.02.041  

    ISSN: 0043-1354

  67. Improving fermentative hydrogen and methane production from an algal bloom through hydrothermal/steam acid pretreatment

    Jun Cheng, Liangchen Yue, Lingkan Ding, Yu-You Li, Qing Ye, Junhu Zhou, Kefa Cen, Richen Lin

    International Journal of Hydrogen Energy 44 (12) 5812-5820 2019/03/01

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.ijhydene.2019.01.046  

    ISSN: 0360-3199

  68. Co-production of biohydrogen and biomethane from food waste and paper waste via recirculated two-phase anaerobic digestion process: Bioenergy yields and metabolic distribution

    Yu Qin, Lu Li, Jing Wu, Benyi Xiao, Toshimasa Hojo, Kengo Kubota, Jun Cheng, Yu-You Li

    Bioresource Technology 276 325-334 2019/03/01

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.biortech.2019.01.004  

    ISSN: 1873-2976 0960-8524

  69. Characterization of microbial community and main functional groups of prokaryotes in thermophilic anaerobic co-digestion of food waste and paper waste

    Lu Li, Yu Qin, Zhe Kong, Jing Wu, Kengo Kubota, Yu-You Li

    Science of the Total Environment 652 709-717 2019/02/20

    Publisher: Elsevier B.V.

    DOI: 10.1016/j.scitotenv.2018.10.292  

    ISSN: 1879-1026 0048-9697

  70. Efficient nitrate removal from water using selected cathodes and Ti/PbO2 anode: Experimental study and mechanism verification Peer-reviewed

    Xufeng Rao, Xiaolin Shao, Jie Xu, Jin Yi, Jinli Qiao, Qingyu Li, Hongqiang Wang, Meifang Chien, Chihiro Inoue, Yuyu Liu, Jiujun Zhang

    Separation and Purification Technologies 168 158-165 2019/02

    DOI: 10.1016/j.seppur.2019.02.009  

    ISSN: 1383-5866

    eISSN: 1873-3794

  71. Insights into the methanogenic degradation of N, N-dimethylformamide: The functional microorganisms and their ecological relationships

    Zhe Kong, Lu Li, Jiang Wu, Tao Zhang, Yu-You Li

    Bioresource Technology 271 37-47 2019/01/01

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.biortech.2018.09.074  

    ISSN: 1873-2976 0960-8524

  72. Using Partial Nitrification and Anammox To Remove Nitrogen from Low-Strength Wastewater by Co-immobilizing Biofilm inside a Moving Bed Bioreactor

    Rong Chen, Yasuyuki Takemura, Yuan Liu, Jiayuan Ji, Satoshi Sakuma, Kengo Kubota, Haiyuan Ma, Yu-You Li

    ACS Sustainable Chemistry &amp; Engineering 7 (1) 1353-1361 2018/12/09

    Publisher: American Chemical Society (ACS)

    DOI: 10.1021/acssuschemeng.8b05055  

    ISSN: 2168-0485

    eISSN: 2168-0485

  73. Upgrading methane fermentation of food waste by using a hollow fiber type anaerobic membrane bioreactor

    Hui Cheng, Yutaka Hiro, Toshimasa Hojo, Yu-You Li

    Bioresource Technology 267 386-394 2018/11/01

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.biortech.2018.07.045  

    ISSN: 1873-2976 0960-8524

  74. A new process for simultaneous nitrogen removal and phosphorus recovery using an anammox expanded bed reactor

    Haiyuan Ma, Yanlong Zhang, Yi Xue, Yu-You Li

    Bioresource Technology 267 201-208 2018/11/01

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.biortech.2018.07.044  

    ISSN: 1873-2976 0960-8524

  75. A comprehensive comparison of five different carbon-based cathode materials in CO2 electromethanogenesis: Long-term performance, cell-electrode contact behaviors and extracellular electron transfer pathways

    Guangyin Zhen, Shaojuan Zheng, Xueqin Lu, Xuefeng Zhu, Juan Mei, Takuro Kobayashi, Kaiqin Xu, Yu-You Li, Youcai Zhao

    BIORESOURCE TECHNOLOGY 266 382-388 2018/10

    DOI: 10.1016/j.biortech.2018.06.101  

    ISSN: 0960-8524

    eISSN: 1873-2976

  76. A gradual change between methanogenesis and sulfidogenesis during a long-term UASB treatment of sulfate-rich chemical wastewater Peer-reviewed

    Jiang Wu, Qigui Niu, Lu Li, Yong Hu, Chaimaa Mribet, Toshimasa Hojo, Yu-You Li

    Science of the Total Environment 636 168-176 2018/09/15

    Publisher: Elsevier B.V.

    DOI: 10.1016/j.scitotenv.2018.04.172  

    ISSN: 1879-1026 0048-9697

  77. Biogas recovery from two-phase anaerobic digestion of food waste and paper waste: Optimization of paper waste addition Peer-reviewed

    Yu Qin, Jing Wu, Benyi Xiao, Toshimasa Hojo, Yu-You Li

    Science of the Total Environment 634 1222-1230 2018/09/01

    Publisher: Elsevier B.V.

    DOI: 10.1016/j.scitotenv.2018.03.341  

    ISSN: 1879-1026 0048-9697

  78. Construction of a Dose–Illness Relationship via Modeling Morbidity and Application to Risk Assessment of Wastewater Reuse

    Tingting Gao, Rong Chen, Yanzheng Liu, Xiaochang C. Wang, Yuyou Li

    Risk Analysis 38 (8) 1672-1684 2018/08/01

    Publisher: Blackwell Publishing Inc.

    DOI: 10.1111/risa.12963  

    ISSN: 1539-6924 0272-4332

  79. Anaerobic treatment of N, N-dimethylformamide-containing wastewater by co-culturing two sources of inoculum Peer-reviewed

    Zhe Kong, Lu Li, Rei Kurihara, Kengo Kubota, Yu-You Li

    Water Research 139 228-239 2018/08/01

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.watres.2018.03.078  

    ISSN: 1879-2448 0043-1354

  80. Response of morphology and microbial community structure of granules to influent COD/SO42 – ratios in an upflow anaerobic sludge blanket (UASB) reactor treating starch wastewater Peer-reviewed

    Xueqin Lu, Jialing Ni, Guangyin Zhen, Kengo Kubota, Yu-You Li

    Bioresource Technology 256 456-465 2018/05/01

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.biortech.2018.02.055  

    ISSN: 1873-2976 0960-8524

  81. Unraveling the catalyzing behaviors of different iron species (Fe2+ vs. Fe) in activating persulfate-based oxidation process with implications to waste activated sludge dewaterability

    Guangyin Zhen, Xueqin Lu, Lianghu Su, Takuro Kobayashi, Gopalakrishnari Kumar, Tao Zhou, Kaiqin Xu, Yu-You Li, Xuefeng Zhu, Youcai Zhao

    WATER RESEARCH 134 101-114 2018/05

    DOI: 10.1016/j.watres.2018.01.072  

    ISSN: 0043-1354

  82. Stoichiometric variation and loading capacity of a high-loading anammox attached film expanded bed (AAEEB) reactor

    Yanlong Zhang, Haiyuan Ma, Rong Chen, Qigui Niu, Yu-You Li

    Bioresource Technology 253 130-140 2018/04/01

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.biortech.2018.01.043  

    ISSN: 1873-2976 0960-8524

  83. High loading anaerobic co-digestion of food waste and grease trap waste: Determination of the limit and lipid/long chain fatty acid conversion

    Li-Jie Wu, Takuro Kobayashi, Hidetoshi Kuramochi, Yu-You Li, Kai-Qin Xu, Yongkang Lv

    CHEMICAL ENGINEERING JOURNAL 338 422-431 2018/04

    DOI: 10.1016/j.cej.2018.01.041  

    ISSN: 1385-8947

    eISSN: 1873-3212

  84. The comparison of greenhouse gas emissions in sewage treatment plants with different treatment processes Peer-reviewed

    Shuhei Masuda, Itsumi Sano, Toshimasa Hojo, Yu You Li, Osamu Nishimura

    Chemosphere 193 581-590 2018/02

    DOI: 10.1016/j.chemosphere.2017.11.018  

    ISSN: 0045-6535

    eISSN: 1879-1298

  85. Phase separation and microbial distribution in the hyperthermophilic-mesophilic-type temperature-phased anaerobic digestion (TPAD) of waste activated sludge (WAS) Peer-reviewed

    Yu Qin, Atsushi Higashimori, Li-Jie Wu, Toshimasa Hojo, Kengo Kubota, Yu-You Li

    BIORESOURCE TECHNOLOGY 245 401-410 2017/12

    DOI: 10.1016/j.biortech.2017.08.124  

    ISSN: 0960-8524

    eISSN: 1873-2976

  86. Upgrading of the symbiosis of Nitrosomanas and anammox bacteria in a novel single-stage partial nitritation-anammox system: Nitrogen removal potential and Microbial characterization Peer-reviewed

    Yuan Liu, Qigui Niu, Shaopo Wang, Jiayuan Ji, Yu Zhang, Min Yang, Toshimasa Hojo, Yu-You Li

    BIORESOURCE TECHNOLOGY 244 463-472 2017/11

    DOI: 10.1016/j.biortech.2017.07.156  

    ISSN: 0960-8524

    eISSN: 1873-2976

  87. Investigation on the response of anaerobic membrane bioreactor to temperature decrease from 25 degrees C to 10 degrees C in sewage treatment Peer-reviewed

    Ryoya Watanabe, Yulun Nie, Shinichiro Wakahara, Daisuke Komori, Yu-You Li

    BIORESOURCE TECHNOLOGY 243 747-754 2017/11

    DOI: 10.1016/j.biortech.2017.07.001  

    ISSN: 0960-8524

    eISSN: 1873-2976

  88. Investigating hydrothermal pretreatment of food waste for two-stage fermentative hydrogen and methane co-production Peer-reviewed

    Lingkan Ding, Jun Cheng, Dan Qiao, Liangchen Yue, Yu-You Li, Junhu Zhou, Kefa Cen

    BIORESOURCE TECHNOLOGY 241 491-499 2017/10

    DOI: 10.1016/j.biortech.2017.05.114  

    ISSN: 0960-8524

    eISSN: 1873-2976

  89. Determination and abatement of methanogenic inhibition from oleic and palmitic acids Peer-reviewed

    Li-Jie Wu, Takuro Kobayashi, Yu You Li, Kai-Qin Xu, Yongkang Lv

    INTERNATIONAL BIODETERIORATION & BIODEGRADATION 123 10-16 2017/09

    DOI: 10.1016/j.ibiod.2017.05.021  

    ISSN: 0964-8305

    eISSN: 1879-0208

  90. Submerged anaerobic membrane bioreactor (SAnMBR) performance on sewage treatment: removal efficiencies, biogas production and membrane fouling Peer-reviewed

    Rong Chen, Yulun Nie, Jiayuan Ji, Tetsuya Utashiro, Qian Li, Daisuke Komori, Yu-You Li

    WATER SCIENCE AND TECHNOLOGY 76 (6) 1308-1317 2017/09

    DOI: 10.2166/wst.2017.240  

    ISSN: 0273-1223

    eISSN: 1996-9732

  91. Substrate inhibition and concentration control in an UASB-Anammox process Peer-reviewed

    Haiyuan Ma, Qigui Niu, Yanlong Zhang, Shilong He, Yu-You Li

    BIORESOURCE TECHNOLOGY 238 263-272 2017/08

    DOI: 10.1016/j.biortech.2017.04.017  

    ISSN: 0960-8524

    eISSN: 1873-2976

  92. Applying fermentation liquid of food waste as carbon source to a pilot-scale anoxic/oxic-membrane bioreactor for enhancing nitrogen removal: Microbial communities and membrane fouling behaviour Peer-reviewed

    Jialing Tang, Xiaochang C. Wang, Yisong Hu, Huu Hao Ngo, Yuyou Li, Yongmei Zhang

    BIORESOURCE TECHNOLOGY 236 164-173 2017/07

    DOI: 10.1016/j.biortech.2017.03.186  

    ISSN: 0960-8524

    eISSN: 1873-2976

  93. Nitrogen removal performance and loading capacity of a novel single-stage nitritation-anammox system with syntrophic micro-granul Peer-reviewed

    Shaopo Wang, Yuan Liu, Qigui Niu, Jiayuan Ji, Toshimasa Hojo, Yu-You Li

    BIORESOURCE TECHNOLOGY 236 119-128 2017/07

    DOI: 10.1016/j.biortech.2017.03.164  

    ISSN: 0960-8524

    eISSN: 1873-2976

  94. Fouling behaviour of soluble microbial products and extracellular polymeric substances in a submerged anaerobic membrane bioreactor treating low-strength wastewater at room temperature Peer-reviewed

    Rong Chen, Yulun Nie, Yisong Hu, Rui Miao, Tetsuya Utashiro, Qian Li, Manjuan Xu, Yu-You Li

    JOURNAL OF MEMBRANE SCIENCE 531 1-9 2017/06

    DOI: 10.1016/j.memsci.2017.02.046  

    ISSN: 0376-7388

    eISSN: 1873-3123

  95. Dynamic membrane-assisted fermentation of food wastes for enhancing lactic acid production Peer-reviewed

    Jialing Tang, Xiaochang C. Wang, Yisong Hu, Huu Hao Ngo, Yuyou Li

    BIORESOURCE TECHNOLOGY 234 40-47 2017/06

    DOI: 10.1016/j.biortech.2017.03.019  

    ISSN: 0960-8524

    eISSN: 1873-2976

  96. Characteristics of free fermentation products from food wastes and its denitrification performance

    Yongmei Zhang, Xiaochang Wang, Zhe Cheng, Yuyou Li

    Chinese Journal of Environmental Engineering 11 (5) 3017-3023 2017/05/05

    Publisher: Science Press

    DOI: 10.12030/j.cjee.201512201  

    ISSN: 1673-9108

  97. Effect of anionic surfactant inhibition on sewage treatment by a submerged anaerobic membrane bioreactor: Efficiency, sludge activity and methane recovery Peer-reviewed

    Yulun Nie, Hiroyuki Kato, Toshiki Sugo, Toshimasa Hojo, Xike Tian, Yu-You Li

    CHEMICAL ENGINEERING JOURNAL 315 83-91 2017/05

    DOI: 10.1016/j.cej.2017.01.022  

    ISSN: 1385-8947

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  98. Overview of pretreatment strategies for enhancing sewage sludge disintegration and subsequent anaerobic digestion: Current advances, full-scale application and future perspectives Peer-reviewed

    Guangyin Zhen, Xueqin Lu, Hiroyuki Kato, Youcai Zhao, Yu-You Li

    RENEWABLE & SUSTAINABLE ENERGY REVIEWS 69 559-577 2017/03

    DOI: 10.1016/j.rser.2016.11.187  

    ISSN: 1364-0321

  99. Methanogenic degradation of toilet-paper cellulose upon sewage treatment in an anaerobic membrane bioreactor at room temperature Peer-reviewed

    Rong Chen, Yulun Nie, Hiroyuki Kato, Jiang Wu, Tetsuya Utashiro, Jianbo Lu, Shangchao Yue, Hongyu Jiang, Lu Zhang, Yu-You Li

    BIORESOURCE TECHNOLOGY 228 69-76 2017/03

    DOI: 10.1016/j.biortech.2016.12.089  

    ISSN: 0960-8524

    eISSN: 1873-2976

  100. Phylogenetic diversity and in situ detection of eukaryotes in anaerobic sludge digesters Peer-reviewed

    Miri Matsubayashi, Yusuke Shimada, Yu-You Li, Hideki Harada, Kengo Kubota

    PLOS ONE 12 (3) e0172888 2017/03

    DOI: 10.1371/journal.pone.0172888  

    ISSN: 1932-6203

  101. 東南アジアの下水道が長らく整備されない地域における生活排水処理 Peer-reviewed

    竹田久人, 李 玉友

    用水と廃水 59 (3) 211-218 2017/03/01

    Publisher:

    ISSN: 0513-5907

  102. On the effect of Fe(III) on proliferation of Microcystis aeruginosa at high nitrate and low chlorophyll condition

    Rong Chen, Zhen Lei, Jiayuan Ji, Xiaochang Wang, Yu-You Li, Yuan Yang, Lu Zhang, Tao Xue

    Journal of Environmental Sciences (China) 52 105-110 2017/02/01

    Publisher: Chinese Academy of Sciences

    DOI: 10.1016/j.jes.2016.03.006  

    ISSN: 1001-0742

  103. The performance and kinetic characterization of the three metabolic reactions in the thermophilic hydrogen and acidic fermentation of cassava residue Peer-reviewed

    Hongyu Jiang, Yu Qin, S. I. Gadow, Yu-You Li

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 42 (5) 2868-2877 2017/02

    DOI: 10.1016/j.ijhydene.2017.01.061  

    ISSN: 0360-3199

    eISSN: 1879-3487

  104. Insight into the risk of replenishing urban landscape ponds with reclaimed wastewater Peer-reviewed

    Rong Chen, Dong Ao, Jiayuan Ji, Xiaochang C. Wang, Yu-You Li, Yue Huang, Tao Xue, Hongbing Guo, Nan Wang, Lu Zhang

    JOURNAL OF HAZARDOUS MATERIALS 324 573-582 2017/02

    DOI: 10.1016/j.jhazmat.2016.11.028  

    ISSN: 0304-3894

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  105. 高希釈生ごみを対象とした担体設置型サイフォン撹拌式リアクターの高温メタン発酵特性 Peer-reviewed

    押部 洋, 大坂 典子, 李 玉友

    土木学会論文集G(環境) 73 (1) 11-19 2017/02

    DOI: 10.2208/jscejer.73.11  

  106. Efficient methanogenic degradation of alcohol ethoxylates and microbial community acclimation in treatment of municipal wastewater using a submerged anaerobic membrane bioreactor Peer-reviewed

    Yulun Nie, Qigui Niu, Hiroyuki Kato, Toshiki Sugo, Xike Tian, Yu-You Li

    BIORESOURCE TECHNOLOGY 226 181-190 2017/02

    DOI: 10.1016/j.biortech.2016.11.128  

    ISSN: 0960-8524

    eISSN: 1873-2976

  107. Enhanced methanogenic degradation of cellulose-containing sewage via fungi-methanogens syntrophic association in an anaerobic membrane bioreactor

    Rong Chen, Yulun Nie, Nobuyuki Tanaka, Qigui Niu, Qian Li, Yu-You Li

    Bioresource Technology 245 810-818 2017

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.biortech.2017.09.046  

    ISSN: 1873-2976 0960-8524

  108. Electro-Fenton oxidation of coking wastewater: optimization using the combination of central composite design and convex optimization method Peer-reviewed

    Bo Zhang, Jiwei Sun, Qin Wang, Niansi Fan, Jialing Ni, Weicheng Li, Yingxin Gao, Yu-You Li, Changyou Xu

    ENVIRONMENTAL TECHNOLOGY 38 (19) 2456-2464 2017

    DOI: 10.1080/09593330.2016.1265591  

    ISSN: 0959-3330

    eISSN: 1479-487X

  109. Effect of pH on lactic acid production from acidogenic fermentation of food waste with different types of inocula Peer-reviewed

    Jialing Tang, Xiaochang C. Wang, Yisong Hu, Yongmei Zhang, Yuyou Li

    BIORESOURCE TECHNOLOGY 224 544-552 2017/01

    DOI: 10.1016/j.biortech.2016.11.111  

    ISSN: 0960-8524

    eISSN: 1873-2976

  110. Sulfidogenesis process to strengthen re-granulation for biodegradation of methanolic wastewater and microorganisms evolution in an UASB reactor Peer-reviewed

    Xueqin Lu, Guangyin Zhen, Jialing Ni, Kengo Kubota, Yu-You Li

    WATER RESEARCH 108 137-150 2017/01

    DOI: 10.1016/j.watres.2016.10.073  

    ISSN: 0043-1354

  111. Optimisation for Enriching ammonium oxidizing bacteria innmembrane partial nitrification reactor: mathematical simulation Peer-reviewed

    Weikan Qi, Shilong He, Yanlong Zhang, Jie Xu, X. Jin Yang, Yuyou Li

    Journal of Water Sustainability 6 (4) 125-137 2016/12

  112. Effects of soluble microbial products (SMP) on the performance of an anammox attached film expanded bed (AAFEB) reactor: Synergistic interaction and toxic shock Peer-reviewed

    Yanlong Zhang, Haiyuan Ma, Qigui Niu, Rong Chen, Toshimasa Hojo, Yu-You Li

    BIORESOURCE TECHNOLOGY 222 261-269 2016/12

    DOI: 10.1016/j.biortech.2016.09.129  

    ISSN: 0960-8524

    eISSN: 1873-2976

  113. 担体添加型一槽式Anammox反応槽における窒素除去特性の検討 Peer-reviewed

    北條 俊昌, 劉 媛, 王 少坡, 牛 啓桂, 紀 佳淵, 李 玉友

    土木学会論文集G(環境) 72 (7) Ⅲ_19-Ⅲ_ 27 2016/12

    DOI: 10.2208/jscejer.72.III_19  

  114. Anammox 付着膜膨張床の処理性能と汚泥特性解析 Peer-reviewed

    張彦隆, 馬海元, 北條俊昌, 李玉友

    土木学会論文集G(環境) 72 (7) Ⅲ_9-Ⅲ_17 2016/12

    DOI: 10.2208/jscejer.72.III_9  

  115. PMA-qPCR 法へのLED 光源の適用とろ過濃縮の影響 Peer-reviewed

    類家渉, 山本歩, 矢口淳一, 久保田健吾, 李玉友

    土木学会論文集G(環境) 72 (7) Ⅲ_397-Ⅲ_404 2016/12

    DOI: 10.2208/jscejer.72.III_315  

  116. Thermodynamically enhancing propionic acid degradation by using sulfate as an external electron acceptor in a thermophilic anaerobic membrane reactor Peer-reviewed

    Wei Qiao, Kazuyuki Takayanagi, Qian Li, Mohammad Shofie, Fang Gao, Renjie Dong, Yu-You Li

    WATER RESEARCH 106 320-329 2016/12

    DOI: 10.1016/j.watres.2016.10.013  

    ISSN: 0043-1354

  117. Synthetic lepidocrocite for phosphorous removal from reclaimed water: optimization using convex optimization method and successive adsorption in fixed bed column

    Qin Wang, Bo Zhang, Muhua Wang, Jiang Wu, Yuyou Li, Yingxin Gao, Weicheng Li, Yong Jin

    Environmental Technology (United Kingdom) 37 (21) 2750-2759 2016/11/01

    Publisher: Taylor and Francis Ltd.

    DOI: 10.1080/09593330.2016.1162849  

    ISSN: 1479-487X 0959-3330

  118. 下水処理場のエネルギー自立に向けた地域バイオマス資源の効率的利用―大船渡浄化センターにおける実証試験― Peer-reviewed

    加藤裕之, 千葉穣, 熊井勝幸, 李 玉友

    用水と廃水 58 (11) 828-834 2016/11

    Publisher:

    ISSN: 0513-5907

  119. Efficient performance and the microbial community changes of submerged anaerobic membrane bioreactor in treatment of sewage containing cellulose suspended solid at 25 degrees C Peer-reviewed

    Ryoya Watanabe, Yulun Nie, Shintaro Takahashi, Shinichiro Wakahara, Yu-You Li

    BIORESOURCE TECHNOLOGY 216 128-134 2016/09

    DOI: 10.1016/j.biortech.2016.05.049  

    ISSN: 0960-8524

    eISSN: 1873-2976

  120. Use of real-time PCR with propidium monoazide for enumeration of viable Escherichia coli in anaerobic digestion Peer-reviewed

    Wataru Ruike, Atsushi Higashimori, Junichi Yaguchi, Yu-you Li

    WATER SCIENCE AND TECHNOLOGY 74 (5) 1243-1254 2016/09

    DOI: 10.2166/wst.2016.327  

    ISSN: 0273-1223

    eISSN: 1996-9732

  121. Inhibition and acclimation of nitrifiers exposed to erythromycin Peer-reviewed

    Jingru Du, Weikang Qi, Qigui Niu, Yong Hu, Yu Zhang, Min Yang, Yu-You Li

    ECOLOGICAL ENGINEERING 94 337-343 2016/09

    DOI: 10.1016/j.ecoleng.2016.06.006  

    ISSN: 0925-8574

    eISSN: 1872-6992

  122. Phosphorus release from coprecipitants formed during orthophosphate removal with Fe(III) salt coagulation: Effects of pH, Eh, temperature and aging time Peer-reviewed

    Jianbo Lu, Jinmei Yang, Kai Xu, Jing Hao, Yu-You Li

    Journal of Environmental Chemical Engineering 4 (3) 3322-3329 2016/09/01

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.jece.2016.07.005  

    ISSN: 2213-3437

  123. Effect of influent COD/SO42- ratios on biodegradation behaviors of starch wastewater in an upflow anaerobic sludge blanket (UASB) reactor Peer-reviewed

    Xueqin Lu, Guangyin Zhen, Jialing Ni, Toshimasa Hojo, Kengo Kubota, Yu-You Li

    BIORESOURCE TECHNOLOGY 214 175-183 2016/08

    DOI: 10.1016/j.biortech.2016.04.100  

    ISSN: 0960-8524

    eISSN: 1873-2976

  124. Effects of Potassium, Magnesium, Zinc, and Manganese Addition on the Anaerobic Digestion of De-oiled Grease Trap Waste Peer-reviewed

    Li-Jie Wu, Takuro Kobayashi, Hidetoshi Kuramochi, Yu-You Li, Kai-Qin Xu

    ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 41 (7) 2417-2427 2016/07

    DOI: 10.1007/s13369-015-1879-3  

    ISSN: 2193-567X

    eISSN: 2191-4281

  125. Long-term operation performance and variation of substrate tolerance ability in an anammox attached film expanded bed (AAFEB) reactor Peer-reviewed

    Yanlong Zhang, Qigui Niu, Haiyuan Ma, Shilong He, Kengo Kubota, Yu-You Li

    BIORESOURCE TECHNOLOGY 211 31-40 2016/07

    DOI: 10.1016/j.biortech.2016.03.055  

    ISSN: 0960-8524

    eISSN: 1873-2976

  126. Effects of additional fermented food wastes on nitrogen removal enhancement and sludge characteristics in a sequential batch reactor for wastewater treatment Peer-reviewed

    Yongmei Zhang, Xiaochang C. Wang, Zhe Cheng, Yuyou Li, Jialing Tang

    ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 23 (13) 12890-12899 2016/07

    DOI: 10.1007/s11356-016-6447-1  

    ISSN: 0944-1344

    eISSN: 1614-7499

  127. Characterization and potential of three temperature ranges for hydrogen fermentation of cellulose by means of activity test and 16s rRNA sequence analysis Peer-reviewed

    Samir I. Gadow, Hongyu Jiang, Yu-You Li

    BIORESOURCE TECHNOLOGY 209 80-89 2016/06

    DOI: 10.1016/j.biortech.2016.02.098  

    ISSN: 0960-8524

    eISSN: 1873-2976

  128. Lactic acid fermentation from food waste with indigenous microbiota: Effects of pH, temperature and high OLR Peer-reviewed

    Jialing Tang, Xiaochang Wang, Yisong Hu, Yongmei Zhang, Yuyou Li

    WASTE MANAGEMENT 52 278-285 2016/06

    DOI: 10.1016/j.wasman.2016.03.034  

    ISSN: 0956-053X

  129. Operation stability and recovery performance in an Anammox EGSB reactor after pH shock Peer-reviewed

    Shilong He, Yanlong Zhang, Qigui Niu, Haiyuan Ma, Yu-You Li

    ECOLOGICAL ENGINEERING 90 50-56 2016/05

    DOI: 10.1016/j.ecoleng.2016.01.084  

    ISSN: 0925-8574

    eISSN: 1872-6992

  130. Application of disease burden to quantitative assessment of health hazards for a decentralized water reuse system Peer-reviewed

    Tingting Gao, Rong Chen, Xiaochang Wang, Huu Hao Ngo, Yu-You Li, Jinhong Zhou, Lu Zhang

    SCIENCE OF THE TOTAL ENVIRONMENT 551 83-91 2016/05

    DOI: 10.1016/j.scitotenv.2016.01.210  

    ISSN: 0048-9697

    eISSN: 1879-1026

  131. Characterization of three types of inhibition and their recovery processes in an anammox UASB reactor Peer-reviewed

    Yanlong Zhang, Shilong He, Qigui Niu, Weikang Qi, Yu-You Li

    BIOCHEMICAL ENGINEERING JOURNAL 109 212-221 2016/05

    DOI: 10.1016/j.bej.2016.01.022  

    ISSN: 1369-703X

    eISSN: 1873-295X

  132. Upgrading of mesophilic anaerobic digestion of waste activated sludge by thermophilic pre-fermentation and recycle: Process performance and microbial community analysis Peer-reviewed

    Li-Jie Wu, Atsushi Higashimori, Yu Qin, Toshimasa Hojo, Kengo Kubota, Yu-You Li

    FUEL 169 7-14 2016/04

    DOI: 10.1016/j.fuel.2015.11.091  

    ISSN: 0016-2361

    eISSN: 1873-7153

  133. Comparison of hyper-thermophilic-mesophilic two-stage with single-stage mesophilic anaerobic digestion of waste activated sludge: Process performance and microbial community analysis Peer-reviewed

    Li-Jie Wu, Atsushi Higashimori, Yu Qin, Toshimasa Hojo, Kengo Kubota, Yu-You Li

    CHEMICAL ENGINEERING JOURNAL 290 290-301 2016/04

    DOI: 10.1016/j.cej.2016.01.067  

    ISSN: 1385-8947

    eISSN: 1873-3212

  134. Reactor kinetics evaluation and performance investigation of a long-term operated UASB-anammox mixed culture process Peer-reviewed

    Qigui Niu, Yanlong Zhang, Haiyuan Ma, Shilong He, Yu-You Li

    INTERNATIONAL BIODETERIORATION & BIODEGRADATION 108 24-33 2016/03

    DOI: 10.1016/j.ibiod.2015.11.024  

    ISSN: 0964-8305

    eISSN: 1879-0208

  135. Factors associated with the process stability and recovery control of Anammox mixed culture in a long-term operated UASB reactor Peer-reviewed

    Qigui Niu, Shilong He, Yanlong Zhang, Haiyuan Ma, Yuan Liu, Yu-You Li

    Bioresource Technology 203 132-141 2016/03

  136. 高濃度硫酸塩を含むエタノール・酢酸系化学工場排水のUASB処理に及ぼす有機物濃度変動の影響 Peer-reviewed

    呉江, 胡勇, 北條俊昌, 常玉広, 李玉友

    用水と廃水 58 (3) 209-218 2016/03/01

  137. Improved biogas production from food waste by co-digestion with de-oiled grease trap waste Peer-reviewed

    Li-Jie Wu, Takuro Kobayashi, Hidetoshi Kuramochi, Yu-You Li, Kai-Qin Xu

    BIORESOURCE TECHNOLOGY 201 237-244 2016/02

    DOI: 10.1016/j.biortech.2015.11.061  

    ISSN: 0960-8524

    eISSN: 1873-2976

  138. Effect of fermentation liquid from food waste as a carbon source for enhancing denitrification in wastewater treatment Peer-reviewed

    Yongmei Zhang, Xiaochang C. Wang, Zhe Cheng, Yuyou Li, Jialing Tang

    CHEMOSPHERE 144 689-696 2016/02

    DOI: 10.1016/j.chemosphere.2015.09.036  

    ISSN: 0045-6535

    eISSN: 1879-1298

  139. Recycling of livestock manure into bioenergy

    Qigui Niu, Yu-You Li

    Environmental Footprints and Eco-Design of Products and Processes 165-186 2016

    Publisher: Springer

    DOI: 10.1007/978-981-10-0150-5_6  

    ISSN: 2345-766X 2345-7651

  140. Bio-kinetics evaluation and batch modeling of the anammox mixed culture in UASB and EGSB reactors: batch performance comparison and kinetic model assessment Peer-reviewed

    Qigui Niu, Shilong He, Yanlong Zhang, Yu Zhang, Min Yang, Yu-You Li

    RSC ADVANCES 6 (5) 3487-3500 2016

    DOI: 10.1039/c5ra14648h  

    ISSN: 2046-2069

  141. Application of a CO2-stripping system for calcium removal to upgrade organic matter removal and sludge granulation in a leachate-fed EGSB bioreactor Peer-reviewed

    Xueqin Lu, Shanping Chen, Jinghuan Luo, Guangren Qian, Jianyong Liu, Guangyin Zhen, Yu-You Li

    RSC ADVANCES 6 (11) 9286-9296 2016

    DOI: 10.1039/c5ra26444h  

    ISSN: 2046-2069

  142. Effects of substrate shock on extracellular polymeric substance (EPS) excretion and characteristics of attached biofilm anammox granules Peer-reviewed

    Yanlong Zhang, Haiyuan Ma, Qigui Niu, Rong Chen, Toshimasa Hojo, Yu-You Li

    RSC ADVANCES 6 (114) 113289-113297 2016

    DOI: 10.1039/c6ra20097d  

    ISSN: 2046-2069

  143. Biocatalysis conversion of methanol to methane in an upflow anaerobic sludge blanket (UASB) reactor: Long-term performance and inherent deficiencies Peer-reviewed

    Xueqin Lu, Guangyin Zhen, Mo Chen, Kengo Kubota, Yu-You Li

    BIORESOURCE TECHNOLOGY 198 691-700 2015/12

    DOI: 10.1016/j.biortech.2015.09.073  

    ISSN: 0960-8524

    eISSN: 1873-2976

  144. Influence of four antimicrobials on methane-producing archaea and sulfate-reducing bacteria in anaerobic granular sludge Peer-reviewed

    Jingru Du, Yong Hu, Weikang Qi, Yanlong Zhang, Zhaoqian Jing, Michael Norton, Yu-You Li

    CHEMOSPHERE 140 184-190 2015/12

    DOI: 10.1016/j.chemosphere.2014.08.028  

    ISSN: 0045-6535

    eISSN: 1879-1298

  145. The seasonal variation of emission of greenhouse gases from a full-scale sewage treatment plant Peer-reviewed

    Shuhei Masuda, Shunsuke Suzuki, Itsumi Sano, Yu-You Li, Osamu Nishimura

    CHEMOSPHERE 140 167-173 2015/12

    DOI: 10.1016/j.chemosphere.2014.09.042  

    ISSN: 0045-6535

    eISSN: 1879-1298

  146. Comparison of single-stage and temperature-phased two-stage anaerobic digestion of oily food waste Peer-reviewed

    Li-Jie Wu, Takuro Kobayashi, Yu-You Li, Kai-Qin Xu

    ENERGY CONVERSION AND MANAGEMENT 106 1174-1182 2015/12

    DOI: 10.1016/j.enconman.2015.10.059  

    ISSN: 0196-8904

    eISSN: 1879-2227

  147. Effect of ammonia inhibition on microbial community dynamic and process functional resilience in mesophilic methane fermentation of chicken manure Peer-reviewed

    Qigui Niu, Kengo Kubota, Wei Qiao, Zhaoqian Jing, Yanlong Zhang, Li Yu-You

    JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY 90 (12) 2161-2169 2015/12

    DOI: 10.1002/jctb.4527  

    ISSN: 0268-2575

    eISSN: 1097-4660

  148. 事業系食品残渣を対象とした小規模分散型メタン発酵システムの効率性に関する研究 Peer-reviewed

    押部洋, 大坂典子, 西川向一, 李玉友

    土木学会論文集G(環境) 71 (7) Ⅲ_1-Ⅲ_ 10 2015/11

    DOI: 10.2208/jscejer.71.III_1  

  149. 超高温条件でのトイレットペーパー水素発酵に及ぼす栄養塩の影響 Peer-reviewed

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    土木学会論文集G(環境) 71 (7) Ⅲ_11-Ⅲ_ 18 2015/11

  150. メタン発酵による混合食品廃棄物の減量化とエネルギー回収 Peer-reviewed

    外内和輝, 東森敦嗣, 北條俊昌, 李玉友

    土木学会論文集G(環境) 71 (7) Ⅲ_39-Ⅲ_ 46 2015/11

    DOI: 10.2208/jscejer.71.III_39  

  151. UASB型ANAMMOMプロセスの処理性能に及ぼす基質濃度の影響 Peer-reviewed

    馬海元, 張彦隆, 何士龍, 牛啓桂, 久保田健吾, 李玉友

    土木学会論文集G(環境) 71 (7) Ⅲ_397-Ⅲ_ 404 2015/11

    DOI: 10.2208/jscejer.71.III_397  

  152. Simulation and configuration correlation analysis of the self-agitation anaerobic baffled reactor for treating livestock organic waste Peer-reviewed

    Wei-Kang Qi, Weicheng Li, Jingru Du, Shi-Long He, Yu-You Li

    BIOCHEMICAL ENGINEERING JOURNAL 103 85-92 2015/11

    DOI: 10.1016/j.bej.2015.07.005  

    ISSN: 1369-703X

    eISSN: 1873-295X

  153. Recovery strategies of inhibition for mesophilic anaerobic sludge treating the de-oiled grease trap waste Peer-reviewed

    Li-Jie Wu, Takuro Kobayashi, Hidetoshi Kuramochi, Yu-You Li, Kai-Qin Xu

    INTERNATIONAL BIODETERIORATION & BIODEGRADATION 104 315-323 2015/10

    DOI: 10.1016/j.ibiod.2015.06.020  

    ISSN: 0964-8305

    eISSN: 1879-0208

  154. Factors associated with the diversification of the microbial communities within different natural and artificial saline environments Peer-reviewed

    Shilong He, Qigui Niu, Yu-You Li, Yulun Nie, Miefeng Hou

    ECOLOGICAL ENGINEERING 83 476-484 2015/10

    DOI: 10.1016/j.ecoleng.2015.06.029  

    ISSN: 0925-8574

    eISSN: 1872-6992

  155. Biocatalysis conversion of methanol to methane in an upflow anaerobic sludge Blanket (UASB) reactor Peer-reviewed

    Xieqin Lu, Guangyin Zhen, Mo Chen, Kengo Kubota, Yu-You Li

    Bioresource Technology 198 167-193 2015/10

  156. Evaluation of functional microbial community's difference in full-scale and lab-scale anaerobic digesters feeding with different organic solid waste: Effects of substrate and operation factors Peer-reviewed

    Qigui Niu, Takuro Kobayashi, Yasuyuki Takemura, Kengo Kubota, Yu-You Li

    BIORESOURCE TECHNOLOGY 193 110-118 2015/10

    DOI: 10.1016/j.biortech.2015.05.107  

    ISSN: 0960-8524

    eISSN: 1873-2976

  157. Comprehensive monitoring and management of a long-term thermophilic CSTR treating coffee grounds, coffee liquid, milk waste, and municipal sludge Peer-reviewed

    Mohammad Shofie, Wei Qiao, Qian Li, Kazuyuki Takayanagi, Yu-You Li

    BIORESOURCE TECHNOLOGY 192 202-211 2015/09

    DOI: 10.1016/j.biortech.2015.05.063  

    ISSN: 0960-8524

    eISSN: 1873-2976

  158. Comparing mesophilic and thermophilic anaerobic digestion of chicken manure: Microbial community dynamics and process resilience Peer-reviewed

    Qigui Niu, Yasuyuki Takemura, Kengo Kubota, Yu-You Li

    WASTE MANAGEMENT 43 114-122 2015/09

    DOI: 10.1016/j.wasman.2015.05.012  

    ISSN: 0956-053X

  159. Enhanced Fenton-like degradation of refractory organic compounds by surface complex formation of LaFeO3 and H2O2 Peer-reviewed

    Yulun Nie, Lili Zhang, Yu-You Li, Chun Hu

    JOURNAL OF HAZARDOUS MATERIALS 294 195-200 2015/08

    DOI: 10.1016/j.jhazmat.2015.03.065  

    ISSN: 0304-3894

    eISSN: 1873-3336

  160. UASB法と活性汚泥法の組合せたシステムを用いた有機合成化学工場廃水の処理 Peer-reviewed

    胡勇, 須藤裕太, 呉江, 北條俊昌, 李玉友

    用水と廃水 57 (8) 605-611 2015/08/01

  161. 世界の嫌気性消消化とバイオメタンの新技術の研究開発と実用化 Invited Peer-reviewed

    李玉友, 小林拓朗

    水環境学会誌 57 (8) 273-278 2015/08/01

  162. Upgrading of anaerobic digestion of waste activated sludge by temperature-phased process with recycle Peer-reviewed

    Li-Jie Wu, Yu Qin, Toshimasa Hojo, Yu-You Li

    ENERGY 87 381-389 2015/07

    DOI: 10.1016/j.energy.2015.04.110  

    ISSN: 0360-5442

    eISSN: 1873-6785

  163. Effect of influent COD/SO42- ratios on UASB treatment of a synthetic sulfate-containing wastewater Peer-reviewed

    Yong Hu, Zhaoqian Jing, Yuta Sudo, Qigui Niu, Jingru Du, Jiang Wu, Yu-You Li

    CHEMOSPHERE 130 24-33 2015/07

    DOI: 10.1016/j.chemosphere.2015.02.019  

    ISSN: 0045-6535

    eISSN: 1879-1298

  164. Sulfate addition as an effective method to improve methane fermentation performance and propionate degradation in thermophilic anaerobic co-digestion of coffee grounds, milk and waste activated sludge with AnMBR Peer-reviewed

    Qian Li, Yu-You Li, Wei Qiao, Xiaochang Wang, Kazuyuki Takayanagi

    BIORESOURCE TECHNOLOGY 185 308-315 2015/06

    DOI: 10.1016/j.biortech.2015.03.019  

    ISSN: 0960-8524

    eISSN: 1873-2976

  165. Mesophilic anaerobic co-digestion of waste activated sludge and Egeria densa: Performance assessment and kinetic analysis Peer-reviewed

    Guangyin Zhen, Xueqin Lu, Takuro Kobayashi, Yu-You Li, Kaiqin Xu, Youcai Zhao

    APPLIED ENERGY 148 78-86 2015/06

    DOI: 10.1016/j.apenergy.2015.03.038  

    ISSN: 0306-2619

    eISSN: 1872-9118

  166. 超高温条件を組入れた温度フェーズ二段嫌気性消化プロセスによる余剰汚泥の分解に及ぼす滞留時間の影響 Peer-reviewed

    覃宇, 呉麗傑, 東森敦嗣, 北條俊昌, 李玉友

    用水と廃水 57 (6) 441-449 2015/06/01

    Publisher:

    ISSN: 0513-5907

  167. Effect of viscosity on the mixing efficiency in a self-agitation anaerobic baffled reactor Peer-reviewed

    Wei-Kang Qi, Yi-Ling Guo, Mei Xue, Jing-Ru Du, Weicheng Li, Yu-You Li

    BIOPROCESS AND BIOSYSTEMS ENGINEERING 38 (5) 905-910 2015/05

    DOI: 10.1007/s00449-014-1334-y  

    ISSN: 1615-7591

    eISSN: 1615-7605

  168. 嫌気性膜分離法を用いた下水処理性能の評価―HRTと温度の影響― Peer-reviewed

    渡邉亮哉, 菅生俊樹, 若原慎一郎, 李玉友

    用水と廃水 57 (5) 374-385 2015/05/01

    Publisher:

    ISSN: 0513-5907

  169. The Treatment Performance and the Bacteria Preservation of Anammox: A Review Peer-reviewed

    Shilong He, Qigui Niu, Haiyuan Ma, Yanlong Zhang, Yu-You Li

    WATER AIR AND SOIL POLLUTION 226 (5) 1-16 2015/05

    DOI: 10.1007/s11270-015-2394-6  

    ISSN: 0049-6979

    eISSN: 1573-2932

  170. Cultivation of aerobic granular sludge in a conventional, continuous flow, completely mixed activated sludge system Peer-reviewed

    Xi Chen, Linjiang Yuan, Wenjuan Lu, Yuyou Li, Pei Liu, Kun Nie

    FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 9 (2) 324-333 2015/04

    DOI: 10.1007/s11783-014-0627-3  

    ISSN: 2095-2201

    eISSN: 2095-221X

  171. Improved cellulose conversion to bio-hydrogen with thermophilic bacteria and characterization of microbial community in continuous bioreactor Peer-reviewed

    Hongyu Jiang, Samir I. Gadow, Yasumitsu Tanaka, Jun Cheng, Yu-You Li

    BIOMASS & BIOENERGY 75 57-64 2015/04

    DOI: 10.1016/j.biombioe.2015.02.010  

    ISSN: 0961-9534

    eISSN: 1873-2909

  172. Influence of fermentation liquid of food-waste on nitrification based on KLa and OUR in SBR

    Zhe Cheng, Xiaochang Wang, Yongmei Zhang, Yuyou Li

    Chinese Journal of Environmental Engineering 9 (3) 1259-1263 2015/03/05

    Publisher: Science Press

    ISSN: 1673-9108

  173. Influence of zero valent scrap iron (ZVSI) supply on methane production from waste activated sludge Peer-reviewed

    Guangyin Zhen, Xueqin Lu, Yu-You Li, Yuan Liu, Youcai Zhao

    CHEMICAL ENGINEERING JOURNAL 263 461-470 2015/03

    DOI: 10.1016/j.cej.2014.11.003  

    ISSN: 1385-8947

    eISSN: 1873-3212

  174. Hydrogen production using amino acids obtained by protein degradation in waste biomass by combined dark- and photo-fermentation Peer-reviewed

    Jun Cheng, Lingkan Ding, Ao Xia, Richen Lin, Yuyou Li, Junhu Zhou, Kefa Cen

    BIORESOURCE TECHNOLOGY 179 13-19 2015/03

    DOI: 10.1016/j.biortech.2014.11.109  

    ISSN: 0960-8524

    eISSN: 1873-2976

  175. Fermentative hydrogen and methane cogeneration from cassava residues: Effect of pretreatment on structural characterization and fermentation performance Peer-reviewed

    Jun Cheng, Richen Lin, Lingkan Ding, Wenlu Song, Yuyou Li, Junhu Zhou, Kefa Cen

    BIORESOURCE TECHNOLOGY 179 407-413 2015/03

    DOI: 10.1016/j.biortech.2014.12.050  

    ISSN: 0960-8524

    eISSN: 1873-2976

  176. Operation performance and granule characterization of upflow anaerobic sludge blanket (UASB) reactor treating wastewater with starch as the sole carbon source Peer-reviewed

    Xueqin Lu, Guangyin Zhen, Adriana Ledezma Estrada, Mo Chen, Jialing Ni, Toshimasa Hojo, Kengo Kubota, Yu-You Li

    BIORESOURCE TECHNOLOGY 180 264-273 2015/03

    DOI: 10.1016/j.biortech.2015.01.010  

    ISSN: 0960-8524

    eISSN: 1873-2976

  177. Anaerobic treatment of p-acetamidobenzene sulfonyl chloride (p-ASC)-containing wastewater in the presence or absence of ethanol in a UASB reactor Peer-reviewed

    Wei cheng Li, Chunyan Wang, Zhe Tian, Hong Zhang, Yingxin Gao, Yu Zhang, Min Yang, Yu-You Li, Osamu Nishimura

    INTERNATIONAL BIODETERIORATION & BIODEGRADATION 98 81-88 2015/03

    DOI: 10.1016/j.ibiod.2014.09.002  

    ISSN: 0964-8305

    eISSN: 1879-0208

  178. 高含固污泥水热预处理中碳、氮、磷、硫转化规律 Peer-reviewed

    卓杨,韩芸, 程瑶, 彭党聪, 李玉友

    环境科学 36 (3) 1006-1012 2015/03/01

  179. Treatment of 3,4,5-trimethoxybenzaldehyde and Di-bromo-aldehyde manufacturing wastewater by the coupled Fenton pretreatment and UASB reactor with emphasis on optimization and chemicals analysis Peer-reviewed

    Wei Cheng Li, Hong Chen, Yong Jin, Hong Zhang, Qigui Niu, Weikang Qi, Yanlong Zhang, Yu-You Li, Yingxin Gao

    SEPARATION AND PURIFICATION TECHNOLOGY 142 40-47 2015/03

    DOI: 10.1016/j.seppur.2014.12.013  

    ISSN: 1383-5866

    eISSN: 1873-3794

  180. Rapid establishment of thermophilic anaerobic microbial community during the one-step startup of thermophilic anaerobic digestion from a mesophilic digester Peer-reviewed

    Zhe Tian, Yu Zhang, Yuyou Li, Yongzhi Chi, Min Yang

    WATER RESEARCH 69 9-19 2015/02

    DOI: 10.1016/j.watres.2014.11.001  

    ISSN: 0043-1354

  181. Growth optimisation of microalga mutant at high CO2 concentration to purify undiluted anaerobic digestion effluent of swine manure Peer-reviewed

    Jun Cheng, Jiao Xu, Yun Huang, Yuyou Li, Junhu Zhou, Kefa Cen

    BIORESOURCE TECHNOLOGY 177 240-246 2015/02

    DOI: 10.1016/j.biortech.2014.11.099  

    ISSN: 0960-8524

    eISSN: 1873-2976

  182. Kinetic characterization of thermophilic and mesophilic anaerobic digestion for coffee grounds and waste activated sludge Peer-reviewed

    Qian Li, Wei Qiao, Xiaochang Wang, Kazuyuki Takayanagi, Mohammad Shofie, Yu-You Li

    WASTE MANAGEMENT 36 77-85 2015/02

    DOI: 10.1016/j.wasman.2014.11.016  

    ISSN: 0956-053X

  183. Practice of integrated system of biofilter and constructed wetland in highly polluted surface water treatment Peer-reviewed

    Zhaoqian Jing, Rui He, Yong Hu, Qigui Niu, Shiwei Cao, Yu-You Li

    ECOLOGICAL ENGINEERING 75 462-469 2015/02

    DOI: 10.1016/j.ecoleng.2014.12.015  

    ISSN: 0925-8574

    eISSN: 1872-6992

  184. Enrichemnt of nitrifiers and the influence of antimicrobials on nitrification during batch experiment Peer-reviewed

    Jingru Du, Chao Tang, Weikang Qi, Yu Qin, Yu-You Li

    Journal of Water and Environment Technology 13 (1) 37-48 2015/02/01

    DOI: 10.2965/jwet.2015.37  

  185. 低温短时水热预处理混合及初沉污泥的高温厌氧消化特性研究 Peer-reviewed

    韩芸,宜慧, 卓杨,董涛, 彭党聪, 李玉友

    环境科学学报 35 (2) 461-467 2015/02/01

  186. UASBリアクター内のメタン生成と硫酸塩還元の競合に及ぼすpHショックとH2S阻害の影響 Peer-reviewed

    胡勇, 須藤裕太, 牛啓桂, 北條俊昌, 李玉友

    水環境学会誌 38 (1) 1-8 2015/01/01

    DOI: 10.2965/jswe.38.1  

  187. UASB treatment of chemical synthesis-based pharmaceutical wastewater containing rich organic sulfur compounds and sulfate and associated microbial characteristics Peer-reviewed

    Weicheng Li, Qigui Niu, Hong Zhang, Zhe Tian, Yu Zhang, Yingxin Gao, Yu-You Li, Osamu Nishimura, Min Yang

    CHEMICAL ENGINEERING JOURNAL 260 55-63 2015/01

    DOI: 10.1016/j.cej.2014.08.085  

    ISSN: 1385-8947

    eISSN: 1873-3212

  188. Thermophilic anaerobic co-digestion of coffee grounds and excess sludge: long term process stability and energy production Peer-reviewed

    Wei Qiao, Shofie Mohammad, Kazuyuki Takayanagi, Yu-you Li

    RSC ADVANCES 5 (34) 26452-26460 2015

    DOI: 10.1039/c4ra15581e  

    ISSN: 2046-2069

  189. Upgrading of anaerobic digestion of waste activated sludge by a hyper-thermophilic-mesophilic temperature-phased process with a recycle system Peer-reviewed

    L. J. Wu, Y. Qin, T. Hojo, Y. Y. Li

    RSC ADVANCES 5 (84) 68531-68541 2015

    DOI: 10.1039/c5ra08811a  

    ISSN: 2046-2069

  190. 嫌気性膜分離法によるコーヒーかすの高温混合メタン発酵 Peer-reviewed

    高柳和幸, 草谷勇介, 喬瑋, 押部洋, 大坂典子, 李玉友

    用水と廃水 56 (12) 893-902 2014/12/01

    Publisher:

    ISSN: 0513-5907

  191. 温度フェーズ二段嫌気性消化における前段発酵槽の温度による運転特性の違い Peer-reviewed

    覃宇, 呉麗傑, 東森敦嗣, 北條俊昌, 李玉友

    土木学会論文集G(環境) 70 (7) Ⅲ_449-Ⅲ_ 456 2014/12/01

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscejer.70.III_449  

    ISSN: 2185-6648

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    In order to investigate the operating differences by different temperatures as first stage in a temperature phased anaerobic digestion (TPAD), continuous experiments were conducted combining a thermophilic(55°C) first stage and a mesophilic(35°C) second stage, named TM-TPAD, and then combining a hyper-thermophilic(70°C) first stage and a mesophilic(35°C) second stage, named HM-TPAD, focusing on the long-term performance, organic degradation and particle hydrolyzation. The experiments of a single mesophilic(35°C) anaerobic digestion (MAD) were also carried out as comparisons. In this study, the HM-TPAD was operated stably in the long run, achieving a volatile solids (VS) destruction of 51.8%, which was 1.39-folds and 1.16-folds of the values of TM-TPAD and MAD respectively. It can also be concluded that the higher temperature is set to the first stage, the more efficient organic degradation and particle hydrolyzation is obtained for WAS digestion.

  192. 酸素制御 による部分的亜硝酸化の実現と維持 部分的亜硝酸化の実現と維持 Peer-reviewed

    劉媛, 北條俊昌, 何士龍, 甄広印, 李玉友

    土木学会論文集G(環境) 70 (7) Ⅲ_233-Ⅲ_ 241 2014/12/01

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscejer.70.III_233  

    ISSN: 2185-6648

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    The anaerobic ammonium oxidization (ANAMMOX) process has been attracted in nitrogen-rich rejected water treatment as a novel energy-saving technology. In order to well promote the application of ANAMMOX, the achievement and maintenance of about 57% of partial nitritation was investigated in this research. DO concentration was adjusted and altered by aeration rate, which was the main operational strategy in this study. The CSTR reactor was used and the temperature was set as about 25°C in this experiment. The concentration of NH4+-N in synthetic wastewater was 250mg/L, with the NLR as 0.5kgN/m3·d. The results showed that when the concentration of DO was set as 0.12mg/L, which led to the inhibition of the activity of NOB, optimal partial nitritation was achieved and maintained for about 50 days. The concentrations of FA and FNA at that condition were 11.4mg/L, 0.009mg/L, respectively. Hereby, The conclusion can be deduced that DO was a feasible and crucial parameter in the control of partial nitration in view of the association effects of FA and FNA concentrations caused by DO fluctuation.

  193. 制药废水的厌氧生化性评价及UASB处理 Peer-reviewed

    李伟成, 田哲, 戚伟康, 牛启桂, 刘予宇, 李玉友, 高迎新

    环境工程学报 8 (12) 5256-5160 2014/12/01

  194. Long-term effect of the antibiotic cefalexin on methane production during waste activated sludge anaerobic digestion Peer-reviewed

    Xueqin Lu, Guangyin Zhen, Yuan Liu, Toshimasa Hojo, Adriana Ledezma Estrada, Yu-You Li

    BIORESOURCE TECHNOLOGY 169 644-651 2014/10

    DOI: 10.1016/j.biortech.2014.07.056  

    ISSN: 0960-8524

    eISSN: 1873-2976

  195. 嫌気性膜分離法(AnMBR)を用いた人工下水処理性能に及ぼす温度の影響 Peer-reviewed

    渡邉亮哉, 菅生俊樹, 若原慎一郎, 李玉友

    水環境学会誌 37 (5) 197-204 2014/10/01

    DOI: 10.2965/jswe.37.197  

  196. Effect of organic loading rate on continuous hydrogen production from food waste in submerged anaerobic membrane bioreactor Peer-reviewed

    Dong-Yeol Lee, Kai-Qin Xu, Takuro Kobayashi, Yu-You Li, Yuhei Inamori

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 39 (30) 16863-16871 2014/10

    DOI: 10.1016/j.ijhydene.2014.08.022  

    ISSN: 0360-3199

    eISSN: 1879-3487

  197. Combined electrical-alkali pretreatment to increase the anaerobic hydrolysis rate of waste activated sludge during anaerobic digestion Peer-reviewed

    Guangyin Zhen, Xueqin Lu, Yu-You Li, Youcai Zhao

    APPLIED ENERGY 128 93-102 2014/09

    DOI: 10.1016/j.apenergy.2014.04.062  

    ISSN: 0306-2619

    eISSN: 1872-9118

  198. 碱解+低温水热预处理改善剩余污泥中温厌氧消化性能工艺研究 Peer-reviewed

    宜慧, 韩芸, 李玉友, 卓杨, 彭党聪

    环境工程学报 8 (9) 3927-3932 2014/08/01

  199. An anoxic/oxic submerged constructed wetlands process for wastewater treatment: Modeling, simulation and evaluation Peer-reviewed

    Wei-Kang Qi, Yi-Ling Guo, Lin-Meng Su, Michael Norton, Yu Qin, Yu-You Li

    ECOLOGICAL ENGINEERING 67 206-215 2014/06

    DOI: 10.1016/j.ecoleng.2014.03.074  

    ISSN: 0925-8574

    eISSN: 1872-6992

  200. Recent Development in Municipal Wastewater Treatment Using Anaerobic Membrane Bioreactor: A Review Peer-reviewed

    Ryoya Watanabe, Wei Qiao, Michael Norton, Shinichiro Wakahara, Yu-You Li

    Journal of Water Sustenability 4 (2) 101-122 2014/06/01

  201. Characterization of methanogenesis, acidogenesis and hydrolysis in thermophilic methane fermentation of chicken manure Peer-reviewed

    Qigui Niu, Toshimasa Hojo, Wei Qiao, Hong Qiang, Yu-You Li

    CHEMICAL ENGINEERING JOURNAL 244 587-596 2014/05

    DOI: 10.1016/j.cej.2013.11.074  

    ISSN: 1385-8947

    eISSN: 1873-3212

  202. 膜分離メタン発酵法を用いた人工下水の処理特性と微生物群集構造解析 Peer-reviewed

    渡邊亮哉, 高橋慎太郎, 砂庭崇之, 若原慎一郎, 李玉友

    下水道協会誌 51 (617) 105-116 2014/03/01

  203. Effect of the Great East Japan Earthquke and Tsunami on Sewage Facilities and Subsequent Recovery Measures Peer-reviewed

    Wei-Kan Qi, Takayuki Sunaba, Michael Norton, Yu-You Li

    Journal of Water Sustenability 4 (1) 27-40 2014/03/01

  204. 最初沈殿池汚泥の酸発酵特性に及ぼす種汚泥とHRTの影響 Peer-reviewed

    北條俊昌, 李 玉友, 西村 修, 野池達也

    用水と廃水 56 (2) 56-63 2014/02/01

  205. Microbial community composition of a down-flow hanging sponge (DHS) reactor combined with an up-flow anaerobic sludge blanket (UASB) reactor for the treatment of municipal sewage Peer-reviewed

    Kengo Kubota, Mikio Hayashi, Kengo Matsunaga, Akinori Iguchi, Akiyoshi Ohashi, Yu-You Li, Takashi Yamaguchi, Hideki Harada

    BIORESOURCE TECHNOLOGY 151 144-150 2014/01

    DOI: 10.1016/j.biortech.2013.10.058  

    ISSN: 0960-8524

    eISSN: 1873-2976

  206. 浸漬型膜分離嫌気性処理による調味廃液の低負荷処理と水質向上 Peer-reviewed

    若原慎一郎, 高橋慎太郎, 李玉友

    用水と廃水 55 (12) 46-53 2013/12/01

  207. Long-term stability of thermophilic co-digestion submerged anaerobic membrane reactor encountering high organic loading rate, persistent propionate and detectable hydrogen in biogas Peer-reviewed

    Wei Qiao, Kazuyuki Takayanagi, Qigui Niu, Mohammad Shofie, Yu You Li

    BIORESOURCE TECHNOLOGY 149 92-102 2013/12

    DOI: 10.1016/j.biortech.2013.09.023  

    ISSN: 0960-8524

    eISSN: 1873-2976

  208. Hydraulic analysis of an upflow sand filter: Tracer experiments, mathematical model and CFD computation Peer-reviewed

    Wei-Kang Qi, Yi-Ling Guo, Mei Xue, Yu-You Li

    CHEMICAL ENGINEERING SCIENCE 104 460-472 2013/12

    DOI: 10.1016/j.ces.2013.09.035  

    ISSN: 0009-2509

    eISSN: 1873-4405

  209. 高濃度鶏糞のメタン発酵におけるアンモニア阻害と発酵温度の影響 Peer-reviewed

    北條俊昌, 牛啓桂, 喬瑋, 李玉友

    土木学会論文集G(環境) 69 (7) Ⅲ_615-Ⅲ_ 621 2013/11/18

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscejer.69.III_615  

    ISSN: 2185-6648

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    High concentrated chicken manure with about 10% of TS was fed to reactors for continuous mesophilic and thermophilic fermentation to evaluate the performance of biogas production and the ammonia inhibition. Stable mesophilic fermentation was achived even though raw chicken manure was fed as substrate. Thermophilic fermentation was successfully achieved feeding ammonia stripped chicken manure. On the contrary, ammonia inhibition was found to thermophilic fermentation when fed with raw chicken manure. By means of estimating biogas production, ammonia inhibition to mesophilic and thermophilic fermentation began to occur when the concentrations of ammonia were in a range of 4000~5000mg/L and lower than 4000mg/L, respectively. Sharply VFA accumulation occurred when TAN concentration was about 10000mg/L in mesophilic fermentation and 5000mg/L in thermophilic fermentation. In addition, with the increase of TAN concentration, there was a trend that degradation rate of oganic matters decreased. And it was obvious that protein was especially sensitive to ammonia inhibition comparing to the other oganic matters.

  210. 活性汚泥と消化汚泥を用いたAnammoxグラニュールの培養および阻害因子の解析 Peer-reviewed

    張彦隆, 牛啓桂, 李玉友

    土木学会論文集G(環境) 69 (7) Ⅲ_515-Ⅲ_ 522 2013/11/18

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscejer.69.III_515  

    ISSN: 2185-6648

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    The Anammox system was started up with 2L of activated sludge and 3L of anaerobic digestion sludge in a UASB reactor. After 140 days enrichment, the Anammox system was successfully started up. The ammonium removal efficiency reached to near 99.5%. HRT was shortened from 24h to 3h step by step to increase the NLR to 1.68g/L/d. During the steady state, the NRR reached to 1.46g/L/d, and the consumption ratio of NH4+ to N02- was in the range of 1.0~1.1. Substrate concentration shock was also investigated in the experiment. In the continuous experiment, when the concentration of FA and FNA was higher than 20mg/L and 7μg/L, the Anammox system was 60% inhibited. In batch experiment, the inhibitory threshold concentration of FA and FNA was 78mg/L and 30μg/L which was higher than that observed in continuous experiment. The results indicated that the recovered Anammox sludge has stronger resistance for high substrate concentration.

  211. コーヒーかすの高温嫌気性膜分離法によるメタン発酵 Peer-reviewed

    高柳和幸, 喬偉, 李玉友, 山岸哲, 大坂典子

    土木学会論文集G(環境) 69 (7) Ⅲ_515-Ⅲ_ 595 2013/11/18

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscejer.69.III_589  

    ISSN: 2185-6648

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    Coffee Grounds are deemed to be difficult substrates for thermophilic anaerobic digestion due to its complex composition and unknown system inhibition. This work investigated the biodegradability of coffee waste by batch experiment and the feasibility of long term operation of the AnMBR. COD conversion efficiency of 75% and methane yield of 290mlCH4/g-CODadded was obtained in batch experiment. The amendments of alkalinity and micronutrients was obligatory to maintain process stability in long term experiment. Mixing sludge 15% into substrate enhanced the stability of system. Biogas production of 1.93L-Biogas/L-reactor·d and methane content of 60.6% was obtained in co-digestion process. Membrane operation continue 139 days without significant decrease of flux.

  212. 浸漬型嫌気性膜分離法(SAMBR)を用いたSS含有人工下水の処理特性と微生物群集構造解析 Peer-reviewed

    渡邊亮哉, 高橋慎太郎, 砂庭崇之, 若原慎一郎, 李玉友

    水環境学会誌 36 (6) 157-164 2013/11/15

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe.36.157  

    ISSN: 0916-8958

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    A submerged anaerobic membrane bioreactor (SAMBR) combining anaerobic digestion and membrane separation has recently attracted attention, because of its potential to recover methane and reduce sludge production in wastewater treatment. In this study, a lab-scale SAMBR that treats suspended solids containing synthetic sewage was continuously operated for 106 days at room temperature (25°C) to investigate the effect of hydraulic retention time (HRT) on its treatment performance and microbial community. HRT was changed from 48 to 6 hours in 4 steps. At HRT of 12 hours, the chemical oxygen demand (COD) and biochemical oxygen demand removal rates were 94%, and 95% respectively, and 64.6% of input COD was converted to methane. On the basis of the results of cloning analysis, Methanosaeta and Methanoregula were found to be the two dominant Archaea genera, in the reactor. In the clone library of Bacteria, many unclassified bacteria have been detected, and about 21% of facultative anaerobic bacteria have been detected among all the clones.

  213. 有機合成化学工場廃水のUASB処理に及ぼすCOD/SO42-比の影響 Peer-reviewed

    胡勇, 荊肇乾, 須藤裕太, 北條俊昌, 李玉友

    水環境学会誌 36 (6) 165-173 2013/11/15

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe.36.165  

    ISSN: 0916-8958

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    The effect of the chemical oxygen demand/sulfate (COD/SO42-) ratio on the anaerobic treatment of synthetic chemical wastewater containing sulfate, acetate, and ethanol was investigated using a UASB reactor. The experimental results show that at a COD/SO42- ratio of 20 and a COD loading rate of 25.2 g-COD·L-1·d-1, the COD removal rate was maintained at as high as 87.8%. However, at a COD/SO42- ratio of 0.5 (sulfate concentration 6000 mg·L-1), a COD removal rate of 79.2% and a methane production rate of 0.20 L-CH4·g-COD-1 were obtained. The conversion of influent COD to methane dropped from 80.5% to 54.4% with a decrease in the COD/SO42- ratio from 20 to 0.5. At all the COD/SO42- ratios used, over 79.4% of the total electron flow was utilized by methane-producing archaea, indicating that methane fermentation was the predominant reaction.

  214. Characterization of controlled low-strength material obtained from dewatered sludge and refuse incineration bottom ash: Mechanical and microstructural perspectives Peer-reviewed

    Guangyin Zhen, Xueqin Lu, Youcai Zhao, Jing Niu, Xiaoli Chai, Lianghu Su, Yu-You Li, Yuan Liu, Jingru Du, Toshimasa Hojo, Yong Hu

    Journal of Environmental Management 129 183-189 2013/11/05

    DOI: 10.1016/j.jenvman.2013.07.008  

    ISSN: 0301-4797 1095-8630

  215. Inhibitory effects of a shock load of Fe(II)-mediated persulfate oxidation on waste activated sludge anaerobic digestion Peer-reviewed

    Guangyin Zhen, Xueqin Lu, Jing Niu, Lianghu Su, Xiaoli Chai, Youcai Zhao, Yu-You Li, Yu Song, Dongjie Niu

    CHEMICAL ENGINEERING JOURNAL 233 274-281 2013/11

    DOI: 10.1016/j.cej.2013.08.038  

    ISSN: 1385-8947

    eISSN: 1873-3212

  216. Kinetic analysis on gaseous and aqueous product formation by mixed anaerobic hydrogen-producing cultures Peer-reviewed

    Fang Fang, Yang Mu, Guo-Ping Sheng, Han-Qing Yu, Yu-You Li, Kengo Kubota, Hideki Harada

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 38 (35) 15590-15597 2013/11

    DOI: 10.1016/j.ijhydene.2013.03.157  

    ISSN: 0360-3199

    eISSN: 1879-3487

  217. Microbial community shifts and biogas conversion computation during steady, inhibited and recovered stages of thermophilic methane fermentation on chicken manure with a wide variation of ammonia Peer-reviewed

    Qigui Niu, Wei Qiao, Hong Qiang, Yu-You Li

    BIORESOURCE TECHNOLOGY 146 223-233 2013/10

    DOI: 10.1016/j.biortech.2013.07.038  

    ISSN: 0960-8524

    eISSN: 1873-2976

  218. Effect of temperature and temperature shock on the stability of continuous cellulosic-hydrogen fermentation Peer-reviewed

    Samir I. Gadow, Hongyu Jiang, Ryoya Watanabe, Yu-You Li

    BIORESOURCE TECHNOLOGY 142 304-311 2013/08

    DOI: 10.1016/j.biortech.2013.04.102  

    ISSN: 0960-8524

  219. Effect of Mixing Driven by Siphon Flow: Parallel Experiments Using the Anaerobic Reactors with Different Mixing Modes Peer-reviewed

    Takuro Kobayashi, Ya-Peng Wu, Kai-Qin Xu, Yu-You Li

    ENERGIES 6 (8) 4207-4222 2013/08

    DOI: 10.3390/en6084207  

    ISSN: 1996-1073

  220. Mesophilic methane fermentation of chicken manure at a wide range of ammonia concentration: Stability, inhibition and recovery Peer-reviewed

    Qigui Niu, Wei Qiao, Hong Qiang, Toshimasa Hojo, Yu-You Li

    BIORESOURCE TECHNOLOGY 137 358-367 2013/06

    DOI: 10.1016/j.biortech.2013.03.080  

    ISSN: 0960-8524

  221. UASB performance and electron competition between methane-producing archaea and sulfate-reducing bacteria in treating sulfate-rich wastewater containing ethanol and acetate Peer-reviewed

    Zhaoqian Jing, Yong Hu, Qigui Niu, Yuyu Liu, Yu-You Li, Xiaochang C. Wang

    BIORESOURCE TECHNOLOGY 137 349-357 2013/06

    DOI: 10.1016/j.biortech.2013.03.137  

    ISSN: 0960-8524

  222. Cellulosic hydrogen production and microbial community characterization in hyper-thermophilic continuous bioreactor Peer-reviewed

    Samir I. Gadow, Hongyu Jiang, Toshimasa Hojo, Yu-You Li

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 38 (18) 7259-7267 2013/06

    DOI: 10.1016/j.ijhydene.2013.04.041  

    ISSN: 0360-3199

  223. サイフォン式無動力撹拌のメタン発酵に及ぼす効果−異なる撹拌方式の比較実験 Peer-reviewed

    呉亜鵬, 小林 拓朗, 徐 開欽, 李 玉友

    環境技術 42 (5) 291-299 2013/05/20

    Publisher: Society of Environmental Conservation Engineering

    DOI: 10.5956/jriet.42.291  

    ISSN: 0388-9459

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    A continuous experiment of mesophilic anaerobic digestion of kitchen waste was performed using three types of reactors: ⑴ an automatic mixing reactor with a siphon(siphon reactor),⑵ a completely stirred reactor and ⑶ an unmixed reactor. Comparisons of performance and digestion characteristics inside the reactors show significant variations, described below. The siphon reactor performed well under a very high COD loading rate, while an increase in the COD loading rate to 10 ㎏/㎥/d triggered a significant volatile fatty acid(VFA)accumulation in the plug flow reactor. Even under a similar COD loading rate, the methane yield of the siphon reactor was at least 10% higher than that of the unmixed reactor. VFA and Organic Solids were distributed uniformly inside the siphon reactor as compared to the unmixed reactor, potentially leading to reduced precipitations and acidification.

  224. Flow pattern and CFD simulation in wastewater land treatment system with various kinds of net-pipe

    Weikang Qi, Yiling Guo, Mei Xue, Yuyou Li

    Huanjing Kexue Xuebao/Acta Scientiae Circumstantiae 33 (5) 1298-1305 2013/05

    ISSN: 0253-2468

  225. 污水土地处理系统中管网铺设率对留态的影响与CFD模拟 Peer-reviewed

    戚伟康, 郭一令, 薛梅, 李玉友

    环境科学学报 33 (5) 1298-1305 2013/05

  226. Hydraulic characteristics simulation of an innovative self-agitation anaerobic baffled reactor (SA-ABR) Peer-reviewed

    Wei-Kang Qi, Toshimasa Hojo, Yu-You Li

    BIORESOURCE TECHNOLOGY 136 94-101 2013/05

    DOI: 10.1016/j.biortech.2013.02.033  

    ISSN: 0960-8524

  227. Innovative combination of electrolysis and Fe(II)-activated persulfate oxidation for improving the dewaterability of waste activated sludge Peer-reviewed

    Guang-Yin Zhen, Xue-Qin Lu, Yu-You Li, You-Cai Zhao

    BIORESOURCE TECHNOLOGY 136 654-663 2013/05

    DOI: 10.1016/j.biortech.2013.03.007  

    ISSN: 0960-8524

  228. UASB start-up and treatment performace oflandfill leachate with different concentration Peer-reviewed

    刘子旭, 孙力平, 李玉友, 邱春生, 朱永强

    Chinese Journal of Environmental Engineering 7 (5) 1621-1626 2013/05

  229. Inhibition of methanogenium by erythromycin and its domestation Peer-reviewed

    Zi-Xu Liu, Li-Ping Sun, Yu-You Li, Chun-Sheng Qiu

    Huanjing Kexue/Environmental Science 34 (4) 1540-1544 2013/04

    ISSN: 0250-3301

  230. Trace metals requirements for continuous thermophilic methane fermentation of high-solid food waste Peer-reviewed

    Hong Qiang, Qigui Niu, Yongzhi Chi, Yuyou Li

    CHEMICAL ENGINEERING JOURNAL 222 330-336 2013/04

    DOI: 10.1016/j.cej.2013.02.076  

    ISSN: 1385-8947

  231. Characteristics of an A2O-MBR system for reclaimed water production under constant flux at low TMP Peer-reviewed

    Yisong Hu, Xiaochang C. Wang, Yongmei Zhang, Yuyou Li, Hua Chen, Pengkang Jin

    Journal of Membrane Science 431 (431) 156-162 2013/03/15

    DOI: 10.1016/j.memsci.2013.01.001  

    ISSN: 0376-7388 1873-3123

  232. 下水処理水に含まれるメタンおよび亞酸化窒素の排出量に占める溶存態成分の割合 Peer-reviewed

    増田周平, 佐野慈, 李玉友, 西村修

    用水と廃水 55 (3) 227-234 2013/03/01

    Publisher:

    ISSN: 0513-5907

  233. Removal of emulsion oil from oilfield ASP wastewater by internal circulation flotation and kinetic models Peer-reviewed

    Wei-Kang Qi, Zhong-Chen Yu, Yu-Yu Liu, Yu-You Li

    CHEMICAL ENGINEERING SCIENCE 91 122-129 2013/03

    DOI: 10.1016/j.ces.2013.01.020  

    ISSN: 0009-2509

  234. Impact of UASB start-up and different HRT on treatment effect of old landfill leachate

    Zixu Liu, Liping Sun, Yuyou Li, Chunsheng Qiu, Yongqiang Zhu

    Chinese Journal of Environmental Engineering 7 (2) 483-488 2013/02

    ISSN: 1673-9108

  235. Thermophilic anaerobic digestion of coffee grounds with and without waste activated sludge as co-substrate using a submerged AnMBR: System amendments and membrane performance Peer-reviewed

    Wei Qiao, Kazuyuki Takayanagi, Mohammad Shofie, Qigui Niu, Han Qing Yu, Yu-You Li

    Bioresource Technology 150 249-258 2013

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.biortech.2013.10.002  

    ISSN: 1873-2976 0960-8524

  236. Synergetic pretreatment of waste activated sludge by Fe(II)-activated persulfate oxidation under mild temperature for enhanced dewaterability Peer-reviewed

    Guangyin Zhen, Xueqin Lu, Baoying Wang, Youcai Zhao, Xiaoli Chai, Dongjie Niu, Aihua Zhao, Yuyou Li, Yu Song, Xianyan Cao

    BIORESOURCE TECHNOLOGY 124 29-36 2012/11

    DOI: 10.1016/j.biortech.2012.08.039  

    ISSN: 0960-8524

  237. 高濃度硫酸塩含有エタノール系化学工業廃水のUASB処理 Peer-reviewed

    胡勇, 荊肇乾, 劉予宇, 李玉友

    土木学会論文集G(環境) 68 (7) Ⅲ_401-Ⅲ_ 408 2012/11

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscejer.68.III_401  

    ISSN: 2185-6648

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    In this study, in order to evaluate the effect of COD loading rate on UASB reactor treating synthetic wastewater containing sulfate, acetate acid and ethanol, a continuous experiment was operated by shortening HRT stepwise from 48 to 2 h. The experiment results indicated that at COD loading rate 12.3 g-COD/L/d, the COD removal rate was maintained above 86.5%. With HRT in the range of 3-12 h, 47.5%-54.4% of the influent COD was converted into biogas methane, and 21.4%-28.0% was converted into sulfide. After this continuous operation of the UASB reactor, granular sludge with an average particle size of 1.8 mm and sedimentation velocity of 96.5 m/h was gained. In addition, the anaerobic degradation pathway of ethanol under sulfate-rich condition was investigated according to the test result of methane-producing activity (MPA) and sulfate-reducing activity (SRA).

  238. 浸漬型嫌気性膜分離法(SAMBR)を用いた人工下水の処理性能 Peer-reviewed

    砂庭崇之, 高橋慎太郎, 若原慎一郎, 李玉友, 原田秀樹

    土木学会論文集G(環境) 68 (7) Ⅲ_409-Ⅲ_ 417 2012/11

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscejer.68.III_409  

    ISSN: 2185-6648

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    A Submerged Anaerobic Membrane Bioreactor (SAMBR) combining anaerobic digestion and membrane separation has been attracting attention recently, because it may recovery methane and reduces sludge production. In this study, a lab-scale SAMBR treating soluble synthetic wastewater were continuously operated for 110 days at a room temperature of 25 °C to investigate the effect of hydraulic retention time (HRT) on the treatment performance. The HRT was changed from 48 to 6 hours by 4 steps. At a HRT of 12 hours, COD and BOD removal efficiencies were 94%, 96%, respectively. As a result, 72% of input COD was converted to methane, and sludge production was 0.1 gVSS/gCODrem, which is about 1/3 of that for activated sludge process. Continuous operation was successful for over 70 days without membrane cleaning using backwash and chemical.

  239. 直接発生、間接発生、溶存成分を考慮した下水処理場由来の温室効果ガスの発生量評価 Peer-reviewed

    増田周平, 京野貴文, 李玉友, 西村修

    土木学会論文集G(環境), 68 (7) Ⅲ_557-Ⅲ_ 563 2012/11

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscejer.68.III_557  

    ISSN: 2185-6648

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    We discussed the influence of the difference of the three evaluation method on the counting greenhouse gas emission from sewage treatment plant. We calculated the amount of CH4 and N2O by three method, 1st : IPCCs' guideline, 2nd : the guideline in Japan, and 3rd : the method including the direct and indirect emission of N2O, the emission of dissolved N2O through treatment water, and the direct emission of CH4. The amount of GHGs calculated by Japans' method was lower than that of GHGs calculated by IPCCs' method, even both were calculated based on the identical data. The difference of the results among IPCCs' method, Japans' method, mix method and D-mix method was mainly arised by the indirect emission of N2O, it was supposed that the indirect emission of N2O was important factor quantatively in GHGs calculation. The amount of the dissolved N2O in treated water was almost equal to that of the direct gas emission of N2O, so the dissolved N2O was supposed to be a potential source of N2O emission.

  240. 下水処理場における温室効果ガスの排出係数評価と低減対策 Peer-reviewed

    佐野慈, 増田周平, 李玉友, 西村修, 原田秀樹

    土木学会論文集G(環境) 68 (7) Ⅲ_563-Ⅲ_ 567 2012/11

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscejer.68.III_565  

    ISSN: 2185-6648

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    The emission factors and reduction measure of greenhouse gases (GHGs) in sewage treatment plant were assessed based on the calculation of LCCO2 and the measurement of CH4 and N2O. A total of 3 different typical types of sewage treatment system were investigated at each season for over a year, and the emission amount of GHGs and GHGs emission factor for each plant were identified. The three main sources for GHGs were the electric consumption, nitrous oxide from sludge incineration process and on-site methane production. The on-site methane emission was found in aeration tank and was depended on the season and water temperature. The nitrous oxide emission was depended on not only the temperature but also the treatment system. Based on the results of this study, GHGs reduction measures from sewage treatment plant was suggested.

  241. 余剰活性汚泥の好気性および嫌気性条件における自己分解特性の比較 Peer-reviewed

    小林拓朗, 金澤拓大, 安井英斉, 李 玉友

    下水道協会誌 49 (600) 107-114 2012/10/01

  242. Effect of temperature on continuous hydrogen production of cellulose Peer-reviewed

    S. I. Gadow, Yu-You Li, Yuyu Liu

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 37 (20) 15465-15472 2012/10

    DOI: 10.1016/j.ijhydene.2012.04.128  

    ISSN: 0360-3199

    eISSN: 1879-3487

  243. Evaluation of hydrogen and methane production from municipal solid wastes with different compositions of fat, protein, cellulosic materials and the other carbohydrates Peer-reviewed

    Takuro Kobayashi, Kai-Qin Xu, Yu-You Li, Yuhei Inamori

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 37 (20) 15711-15718 2012/10

    DOI: 10.1016/j.ijhydene.2012.05.044  

    ISSN: 0360-3199

    eISSN: 1879-3487

  244. Novel insights into enhanced dewaterability of waste activated sludge by Fe(II)-activated persulfate oxidation Peer-reviewed

    Guangyin Zhen, Xueqin Lu, Yuyou Li, Youcai Zhao, Baoying Wang, Yu Song, Xiaoli Chai, Dongjie Niu, Xianyan Cao

    BIORESOURCE TECHNOLOGY 119 7-14 2012/09

    DOI: 10.1016/j.biortech.2012.05.115  

    ISSN: 0960-8524

  245. Performance of double-layer biofilter packed with coal fly ash ceramic granules in treating highly polluted river water Peer-reviewed

    Zhaoqian Jing, Yu-You Li, Shiwei Cao, Yuyu Liu

    BIORESOURCE TECHNOLOGY 120 212-217 2012/09

    DOI: 10.1016/j.biortech.2012.06.069  

    ISSN: 0960-8524

  246. Biodegradability enhancement of wastewater containing cefalexin by means of the electro-Fenton oxidation process Peer-reviewed

    Adriana Ledezma Estrada, Yu-You Li, Aimin Wang

    JOURNAL OF HAZARDOUS MATERIALS 227 41-48 2012/08

    DOI: 10.1016/j.jhazmat.2012.04.079  

    ISSN: 0304-3894

  247. Hydrogen and methane potential based on the nature of food waste materials in a two-stage thermophilic fermentation process Peer-reviewed

    Chun-Feng Chu, Kai-Qin Xu, Yu-You Li, Yuhei Inamori

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 37 (14) 10611-10618 2012/07

    DOI: 10.1016/j.ijhydene.2012.04.048  

    ISSN: 0360-3199

  248. 循環式二段階嫌気性消化による初沈汚泥からのバイオエネルギー回収 Peer-reviewed

    北條俊昌, 李玉友, 西村修

    下水道協会誌 49 (597) 97-105 2012/07/01

  249. Mechanisms of microwave irradiation pretreatment for enhancing anaerobic digestion of cattail by rumen microorganisms Peer-reviewed

    Zhen-Hu Hu, Zhen-Bo Yue, Han-Qing Yu, Shao-Yang Liu, Hideki Harada, Yu-You Li

    APPLIED ENERGY 93 (2) 229-236 2012/05

    DOI: 10.1016/j.apenergy.2011.12.015  

    ISSN: 0306-2619

  250. 下水処理場における温室効果ガスの発生源解析と発生係数の季節変動 Peer-reviewed

    増田 周平, 鈴木俊輔, 李 玉友, 西村 修

    下水道協会誌 49 (594) 97-103 2012/04

  251. Effect of sludge recirculation on characteristics of hydrogen production in a two-stage hydrogen-methane fermentation process treating food wastes Peer-reviewed

    Takuro Kobayashi, Kai-Qin Xu, Yu-You Li, Yuhei Inamori

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 37 (7) 5602-5611 2012/04

    DOI: 10.1016/j.ijhydene.2011.12.123  

    ISSN: 0360-3199

  252. 下水浄化センターの水処理プロセスにおけるメタン発生量の定量化手法に関する検討 Peer-reviewed

    増田周平, 鈴木俊輔, 佐野泉, 李玉友, 西村修

    下水道協会誌 49 (594) 97-103 2012/04/01

  253. 浸漬型膜分離メタン発酵法によるアルコール発酵廃液の処理 Peer-reviewed

    高橋慎太郎, 周 培培, 若原 慎一郎, 李 玉友

    水環境学会誌 35 (3) 41-47 2012/03/15

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe.35.41  

    ISSN: 0916-8958

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    Alcohol stillage wastewater consists of high-strength suspended solids and organic matters, is best treated effectively by anaerobic digestion. To develop more efficient systems for treating alcohol stillage wastewater, a mesophilic submerged anaerobic membrane bioreactor was operated for 4 months by changing the hydraulic retention time and CODCr loading rate. The performances of the anaerobic treatment and membrane operation were investigated experimentally. The maximum organic loading rate obtained in this study was 12.4 kgCOD·m-3·d-1 and the removal efficiency was 97.8%. Furthermore, the CODCr concentration of water that permeated the membrane was under 1,000 mgCOD·L-1 when the organic loading rate was lower than 6.0 kgCOD·m-3·d-1. The addition of trace elements (i.e., Fe, Co and Ni) was necessary to maintain stable operation for this wastewater treatment at a high organic loading rate. The operation was successfully carried out for over 4 months by controlling the on/off time of the suction pump and by recirculating of biogas, without backflushing or chemical cleaning. No significant decrease in flux and the recovered amount of membrane pressure during the off period of filtration was observed in the initial 50 days of continuous operation at sludge concentrations of 10-16 gSS·L-1; however, both parameters gradually decreased to approximately 30% of their initial values after 4 months of continuous operation.

  254. 食品廃棄物の中温高濃度メタン発酵における微量栄養塩の必要性 Peer-reviewed

    強虹, 渡邉亮哉, 李玉友

    用水と廃水 47 (3) 64-71 2012/03/15

  255. Effect of temperature variation on bacterial population activity of bio-H2 production of cellulose

    JIANG Hongyu, S.I. Gadow, HOJO Toshimasa, LI Yu-You

    Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management 23 367-367 2012

    Publisher: Japan Society of Material Cycles and Waste Management

    DOI: 10.14912/jsmcwm.23.0_367  

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    Temperature has been reported as one of important factors in hydrogen fermentation. The activity test is an aid in evaluating performance and stability of hydrogen fermentation. The objective of this study was to determine the specific activity of hydrogen producing microorganisms under various temperatures (25-80 degree)using cellulose as sole of carbon source. The effect of temperature variation on the activity of three different inoculums was investigated. The results showed that, the thermophilic range (45-65 degree) was the best one for increasing the hydrogen producing activity and the maximum activity which was521.4mL H2/g VSS.d at 55 degree&nbsp;have been found under thermophilic inoculum.

  256. High-solid mesophilic methane fermentation of food waste with an emphasis on Iron, Cobalt, and Nickel requirements Peer-reviewed

    Hong Qiang, Dong-Li Lang, Yu-You Li

    BIORESOURCE TECHNOLOGY 103 (1) 21-27 2012/01

    DOI: 10.1016/j.biortech.2011.09.036  

    ISSN: 0960-8524

  257. Characterization of sulfide-oxidizing microbial mats developed inside a full-scale anaerobic digester employing biological desulfurization Peer-reviewed

    Takuro Kobayashi, Yu-You Li, Kengo Kubota, Hideki Harada, Takeki Maeda, Han-Qing Yu

    APPLIED MICROBIOLOGY AND BIOTECHNOLOGY 93 (2) 847-857 2012/01

    DOI: 10.1007/s00253-011-3445-6  

    ISSN: 0175-7598

  258. Performance evaluation and effect of biogas circulation rate of a bubble column for biological desulfurization Peer-reviewed

    Takuro Kobayashi, Kai-Qin Xu, Yu-You Li, Yuhei Inamori

    WATER SCIENCE AND TECHNOLOGY 66 (9) 1914-1922 2012

    DOI: 10.2166/wst.2012.398  

    ISSN: 0273-1223

    eISSN: 1996-9732

  259. 生ごみの分別排出における住民負担の経済的評価 Peer-reviewed

    小野寺秀明, 李玉友, 原田秀樹

    土木学会論文集G(環境) 67 (7) 651-660 2011/11/28

  260. バイオガス循環曝気式新規生物脱硫プロセスの連続実験による性能評価 Peer-reviewed

    小林拓朗, 徐開欽, 李玉友, 海老江美孝, 稲森悠平

    土木学会論文集G(環境) 2011/11/28

  261. 循環式水素・メタン二段発酵プロセスにおける汚泥返送方法が水素発酵に及ぼす影響 Peer-reviewed

    小林拓朗, 呉亜鵬, 徐開欽, 李玉友, 海老江美孝, 稲森悠平

    水環境学会誌 34 (11) 161-171 2011/11/01

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe.34.161  

    ISSN: 0916-8958

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    To clarify the effect of sludge circulation on hydrogen fermentation, two-stage hydrogen-methane fermentation that treats food waste with different patterns of recirculation was investigated. Operation without recirculation did not perform well in terms of hydrogen yield or carbohydrate removal, perhaps owing to an increase of C/NH4+ ratio for microorganisms in the hydrogen fermenter. This indicates that the recirculation supplemented the NH4+ in the hydrogen fermenter. The operation with the circulation of heat-treated sludge performed considerably better than that with the circulation of raw sludge with respect to both hydrogen production rate and yield. In addition, hydrogen production yield decreased in proportion to the flow rate of circulation during the operation with the recirculation of raw sludge. The results of the batch experiments revealed that the sludge circulated to the hydrogen fermenter could consume hydrogen in the hydrogen fermenter at a low pH whereas the heat-treated sludge could not. These results suggest that the recirculation of active methanogenic sludge stimulates hydrogen consumption, which can be attributed to the decrease in hydrogen production yield in two-stage hydrogen-methane fermentation.

  262. Novel Online Monitoring and Alert System for Anaerobic Digestion Reactors Peer-reviewed

    Fang Dong, Quan-Bao Zhao, Wen-Wei Li, Guo-Ping Sheng, Jin-Bao Zhao, Yong Tang, Han-Qing Yu, Kengo Kubota, Yu-You Li, Hideki Harada

    ENVIRONMENTAL SCIENCE & TECHNOLOGY 45 (20) 9093-9100 2011/10

    DOI: 10.1021/es202245f  

    ISSN: 0013-936X

  263. 下水浄化センターの水処理プロセスにおけるメタン発生量の定量化手法に関する検討 Peer-reviewed

    増田周平, 鈴木俊輔, 李玉友, 西村修

    下水道協会誌 48 (588) 119-125 2011/10/01

  264. Effect of starch addition on the biological conversion and microbial community in a methanol-fed UASB reactor during long-term continuous operation Peer-reviewed

    Takuro Kobayashi, Feng Yan, Shintaro Takahashi, Yu-You Li

    BIORESOURCE TECHNOLOGY 102 (17) 7713-7719 2011/09

    DOI: 10.1016/j.biortech.2011.05.084  

    ISSN: 0960-8524

  265. 常温条件下CAST工艺亚硝酸型硝化的实现及特性 Peer-reviewed

    刘艳辉, 孙力平, 王少坡, 刘媛, 于静洁, 李玉友

    环境工程学报 5 (7) 1454-1458 2011/07/01

  266. UASBリアクターを用いたメタノール廃水の嫌気性処理に関する研究 Peer-reviewed

    閻 峰, 小林拓朗, 高橋慎太郎, 李玉友, 大村達夫

    水処理生物学会誌 47 (2) 95-102 2011/06/01

    DOI: 10.2521/jswtb.47.95  

  267. Performance and characterization of a newly developed self-agitated anaerobic reactor with biological desulfurization Peer-reviewed

    Takuro Kobayashi, Yu-You Li

    BIORESOURCE TECHNOLOGY 102 (10) 5580-5588 2011/05

    DOI: 10.1016/j.biortech.2011.01.077  

    ISSN: 0960-8524

  268. メタノール廃水のUASB処理およびグラニュール形成に及ぼすデンプン添加の影響 Peer-reviewed

    閻 峰, 小林拓朗, 高橋慎太郎, 李玉友, 大村達夫

    土木学会論文集G(環境) 67 (2) 60-68 2011/05

  269. The investigation of the green house gases emission from sewage treatment plant by pseudo-anoxic-oxic activated sludge process

    Masuda Shuhei, Kyono Takafumi, Li Yu-You, Nhishimura Osamu

    Annual report of the Society for the Promotion of Construction Engineering 46 33-39 2011/04

    Publisher: Tohoku University

    ISSN: 0288-9994

  270. UASB法による製紙工場メタノール含有廃水と廃棄物の複合処理 Peer-reviewed

    高橋慎太郎, 小林拓朗, 李玉友, 原田秀樹

    環境技術 40 (3) 130-137 2011/03

    DOI: 10.5956/jriet.40.130  

  271. 食品標準成分に基づく生ごみのメタン発酵および水素発酵によるエネルギー回収ポテンシャル評価 Peer-reviewed

    小林拓朗, 李東烈, 徐開欽, 李玉友, 稲森悠平

    環境技術 40 (3) 159-166 2011/03

    DOI: 10.5956/jriet.40.159  

  272. Mineralization of antibiotic sulfamethoxazole by photoelectro-Fenton treatment using activated carbon fiber cathode and under UVA irradiation Peer-reviewed

    Aimin Wang, Yu-You Li, Adriana Ledezma Estrada

    APPLIED CATALYSIS B-ENVIRONMENTAL 102 (3-4) 378-386 2011/02

    DOI: 10.1016/j.apcatb.2010.12.007  

    ISSN: 0926-3373

  273. 生ごみ嫌気発酵によるメタンおよび水素生成ポテンシャル−食品標準成分に基づく分類と特性評価−.

    小林拓朗, 李東烈, 徐開欽, 李玉友, 稲森悠平

    環境技術 40 (3) 31-38 2011

    DOI: 10.5956/jriet.40.159  

  274. Fluorescence spectral characteristics of the supernatants from an anaerobic hydrogen-producing bioreactor Peer-reviewed

    Wei-Hua Li, Guo-Ping Sheng, Rui Lu, Han-Qing Yu, Yu-You Li, Hideki Harada

    APPLIED MICROBIOLOGY AND BIOTECHNOLOGY 89 (1) 217-224 2011/01

    DOI: 10.1007/s00253-010-2867-x  

    ISSN: 0175-7598

  275. Feasible Power Production from Municipal Sludge Using an Improved Anaerobic Digestion System Peer-reviewed

    K. Komatsu, H. Yasui, R. Goel, Y. Y. Li, T. Noike

    OZONE-SCIENCE & ENGINEERING 33 (2) 164-170 2011

    DOI: 10.1080/01919512.2011.549035  

    ISSN: 0191-9512

  276. Novel anaerobic digestion process with sludge ozonation for economically feasible power production from biogas Peer-reviewed

    K. Komatsu, H. Yasui, R. Goel, Y. Y. Li, T. Noike

    WATER SCIENCE AND TECHNOLOGY 63 (7) 1467-1475 2011

    DOI: 10.2166/wst.2011.382  

    ISSN: 0273-1223

  277. Enhancement of thermophilic anaerobic digestion of thickened waste activated sludge by combined microwave and alkaline pretreatment Peer-reviewed

    Yongzhi Chi, Yuyou Li, Xuening Fei, Shaopo Wang, Hongying Yuan

    JOURNAL OF ENVIRONMENTAL SCIENCES 23 (8) 1257-1265 2011

    DOI: 10.1016/S1001-0742(10)60561-X  

    ISSN: 1001-0742

    eISSN: 1878-7320

  278. 無動力撹拌機構を有する新規低コストメタン発酵リアクターの開発 Peer-reviewed

    小林拓朗, 宇佐見心, 李玉友

    水環境学会誌 47 (12) 201-208 2010/12

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe.33.201  

    ISSN: 0916-8958

    More details Close

    Continuous operation treating 100 g·L-1 total solids (TS) simulated food waste was investigated using a novel methane fermentation reactor that enables the agitation of the fermentation liquid without electricity. In this study, the overall performance and reaction attributes of the reactor were evaluated. Under mesophilic condition and at different chemical oxygen demand (CODCr) loading rates (5 to 10 kg·m3·d-1), the reactor achieved 220 days of stable continuous operation. Inside the reactor, the continuous change in the liquid level and the 5 to 16 times self-agitation occurred daily, which was likely responsible for the distribution of organic load near the inlet port of the reactor. The reactor attained 0.72-0.82 m3·g-1-TS biogas production yield and 79.4-85.5% CODCr reduction on average, and a small amount of volatile fatty acid (VFA) was detected in the effluent. These results suggest that the novel reactor investigated is comparable in biogas production yield and CODCr reduction and superior in residual VFA level to the completely stirred tank reactor, in the treatment of same simulated food waste used in a previous study.

  279. 嫌気好気活性汚泥法を行う下水処理場における冬季のCH4・N2Oの発生特性 Peer-reviewed

    増田周平, 京野貴文, 李玉友, 西村修

    用水と廃水 52 (11) 53-61 2010/11

  280. The mechanism and application of the electro-Fenton process for azo dye Acid Red 14 degradation using an activated carbon fibre felt cathode Peer-reviewed

    Aimin Wang, Yu-You Li, Jia Ru

    JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY 85 (11) 1463-1470 2010/11

    DOI: 10.1002/jctb.2450  

    ISSN: 0268-2575

    eISSN: 1097-4660

  281. UASB法によるデンプンの高温水素発酵特性と水素生成グラニュールの微生物群集構造解析 Peer-reviewed

    木村久美, 小林拓朗, 李玉友, 中井裕

    環境工学研究論文集 47 349-356 2010/11

  282. 嫌気好気活性汚泥法を行なう下水処理場における冬期のCH4・N2Oの発生特性 Peer-reviewed

    増田周平, 京野貴文, 李 玉友, 西村 修

    用水と廃水 52 (11) 903-911 2010/11

  283. 高濃度嫌気性消化槽の混合における均一化時間の検討 Peer-reviewed

    寺嶋光春, 小松和也, 安井英斉, ラジブ ゴエル, 井上千弘, 須藤孝一, 李玉友

    土木学会論文集 66 (3) 103-110 2010/09

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscejg.66.103  

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    &nbsp;&nbsp;In this study we evaluated the performance of mixing equipment in full scale anaerobic digester using CFD analysis. A calibrated CFD model incorporating the rheological properties of sludge was developed. To predict the dynamics of mixing, a mathematical parameter, UI (uniformity index) was defined. The visual patterns of tracer mixing in simulation were well correlated with the dynamic variation in the value of UI. The time for sludge homosinization was found to be related to the poorly mixed volume inside the digester. A linear relationship was found between sludge concentration (X) and the ratio of homosinization time to circulation time (TH/TR).

  284. Dynamic Modeling the Anaerobic Reactor Startup Process Peer-reviewed

    Bai-Hang Zhao, Yang Mu, Fang Dong, Bing-Jie Ni, Jin-Bao Zhao, Guo-Ping Sheng, Han-Qing Yu, Yu-You Li, Hideki Harada

    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 49 (16) 7193-7200 2010/08

    DOI: 10.1021/ie1001857  

    ISSN: 0888-5885

  285. Characterization of microbial community in the two-stage process for hydrogen and methane production from food waste Peer-reviewed

    Chun-Feng Chu, Yoshitaka Ebie, Kai-Qin Xu, Yu-You Li, Yuhei Inamori

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 35 (15) 8253-8261 2010/08

    DOI: 10.1016/j.ijhydene.2009.12.021  

    ISSN: 0360-3199

  286. メタノール排水の嫌気性処理に関わる物質変換および微生物群集の解析 Peer-reviewed

    閻 峰, 小林拓朗, 李玉友, 大村達夫

    環境技術 39 (7) 642-651 2010/07

    DOI: 10.5956/jriet.39.426  

  287. Detection and characterization of specific group of microorganisms in various environments using molecular techniques Invited Peer-reviewed

    Yu-You Li

    Proceedings of The 6th International Conference on Interfaces Against Pollution 2010/05

  288. Characterization of the environment and the microbial community in a biofilm oxidizing H2S under microaerophilic conditions inside an anaerobic digester Peer-reviewed

    Takuro Kobayashi, Yu-You Li

    Proceedings of The 6th International Conference on Interfaces Against Pollution 2010/05

  289. Indirect oxidation of antibiotics sulfamethoazole using in situ generated hydrogen peroxide on activated carbon fiber cathode Peer-reviewed

    Aimin Wang, Yuyou Li

    Proceedings of The 6th International Conference on Interfaces Against Pollution 2010/05

  290. CAST工艺常规模式下脱氮性能研究 Peer-reviewed

    张磊,王 少坡, 李玉友, 于静洁, 刘艳辉, 孙力平

    环境工程学报 4 (12) 2683-2686 2010/04/01

  291. Monitoring the restart-up of an upflow anaerobic sludge blanket (UASB) reactor for the treatment of a soybean processing wastewater Peer-reviewed

    Fang Dong, Quan-Bao Zhao, Jin-Bao Zhao, Guo-Ping Sheng, Yong Tang, Zhong-Hua Tong, Han-Qing Yu, Yu-You Li, Hideki Harada

    BIORESOURCE TECHNOLOGY 101 (6) 1722-1726 2010/03

    DOI: 10.1016/j.biortech.2009.10.011  

    ISSN: 0960-8524

  292. 都市下水処理UASB-DHSシステムにおけるG3型DHSリアクターの微生物群集構造解析 Peer-reviewed

    久保田健吾, 林幹大, 松永健吾, 大橋晶良, 李玉友, 山口隆司, 原田秀樹

    土木学会論文集 66, (1) 56-64 2010/03

    DOI: 10.2208/jscejg.66.56  

  293. DHS-USB方式による埋立地浸出水の省エネルギー型窒素除去システムの開発 Peer-reviewed

    大久保努, 渡辺悠介, 大浦一恵, 久保田健吾, 李玉友, 原田秀樹

    土木学会論文集 66 (1) 9-16 2010/03

    DOI: 10.2208/jscejg.66.9  

  294. Applications and new developments of biogas technology in Japan

    Yu-You Li, Takuro Kobayashi

    Environmental Anaerobic Technology: Applications and New Developments 35-58 2010/01/01

    Publisher: Imperial College Press

    DOI: 10.1142/9781848165434_0003  

  295. RETRACTED ARTICLE: Upgrading of anaerobic digestion of thickened waste activated sludge by microwave-assisted alkali pretreatment

    Yong-Zhi Chi, Xue-Ning Fei, Hong-Ying Yuan, Shao-Po Wang, Yu-You Li, Jian-Xing Li

    2010 2nd Conference on Environmental Science and Information Application Technology, ESIAT 2010 1 316-320 2010

    Publisher: IEEE Computer Society

    DOI: 10.1109/ESIAT.2010.5568568  

  296. RETRACTED ARTICLE: Optimization on the solubilization of thickened waste activated sludge using uniform design method

    Yong-Zhi Chi, Min Ji, Yu-You Li, Xue-Ning Fei, Hong-Ying Yuan, Shao-Po Wang, Jian-Xing Li

    2010 2nd Conference on Environmental Science and Information Application Technology, ESIAT 2010 1 321-324 2010

    Publisher: IEEE Computer Society

    DOI: 10.1109/ESIAT.2010.5568569  

  297. Continuous H-2 and CH4 production from high-solid food waste in the two-stage thermophilic fermentation process with the recirculation of digester sludge Peer-reviewed

    Dong-Yeol Lee, Yoshitaka Ebie, Kai-Qin Xu, Yu-You Li, Yuhei Inamori

    BIORESOURCE TECHNOLOGY 101 S42-S47 2010/01

    DOI: 10.1016/j.biortech.2009.03.037  

    ISSN: 0960-8524

    eISSN: 1873-2976

  298. Influence of solids retention time on continuous H-2 production using membrane bioreactor Peer-reviewed

    Dong-Yeol Lee, Yu-You Li, Tatsuya Noike

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 35 (1) 52-60 2010/01

    DOI: 10.1016/j.ijhydene.2009.10.010  

    ISSN: 0360-3199

  299. Mesophilic and thermophilic digestion of thickened waste activated sludge: A comparative study Peer-reviewed

    Yong-Zhi Chia, Yu-You Li, Min Ji, Hong Qiang, Heng-Wei Deng, Ya-Peng Wu

    ENVIRONMENT MATERIALS AND ENVIRONMENT MANAGEMENT PTS 1-3 113-116 450-+ 2010

    DOI: 10.4028/www.scientific.net/AMR.113-116.450  

    ISSN: 1022-6680

  300. Use of combined NaOH-microwave pretreatment for enhancing mesophilic anaerobic digestibility of thickened waste activated sludge Peer-reviewed

    Yong-Zhi Chi, Yu-You Li, Min Ji, Hong Qiang, Heng-Wei Deng, Ya-Peng Wu

    ENVIRONMENT MATERIALS AND ENVIRONMENT MANAGEMENT PTS 1-3 113-116 459-+ 2010

    DOI: 10.4028/www.scientific.net/AMR.113-116.459  

    ISSN: 1022-6680

  301. メタン発酵・無薬注脱水・窒素除去を組み合わせた乳牛ふん尿処理システムの実証研究 Peer-reviewed

    宇佐見心, 堆洋平, 李 玉友, 原田秀樹, 菅野草平, 守山寛

    環境工学論文集 46 673-680 2009/11

  302. Characterization of start-up performance and archaeal community shifts during anaerobic self-degradation of waste-activated sludge Peer-reviewed

    Takuro Kobayashi, Daisuke Yasuda, Yu-You Li, Kengo Kubota, Hideki Harada, Han-Qing Yu

    BIORESOURCE TECHNOLOGY 100 (21) 4981-4988 2009/11

    DOI: 10.1016/j.biortech.2009.05.043  

    ISSN: 0960-8524

  303. Bacterial community and process development for anaerobic hydrogen fermentation

    Yuyou Li, Chunfeng Chu, Yohei Akutsu

    Huanjing Kexue Xuebao / Acta Scientiae Circumstantiae 29 (8) 1569-1588 2009/08

    ISSN: 0253-2468

  304. バイオガスの生物脱硫に寄与する硫黄マットの反応条件と微生物生態 Peer-reviewed

    小林拓朗, 李玉友, 久保田健吾, 原田秀樹

    環境技術 38 (9) 642-651 2009/08

    Publisher: Society of Environmental Conservation Engineering

    DOI: 10.5956/jriet.38.642  

    ISSN: 0388-9459

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    Hydrogen sulfide in a biogas can be removed economically by adding a small amount of air into the headspace of a digester. A microbial mat developed in the headspace of the digester as a result of the sulfide oxidation. Microbial mats containing sulfur filaments developed in the headspace of the digester. Little is known about microbial ecology and the environment in the digester with a biological desulfurization system. This study is an attempt to clarify the internal environment and the microbial ecology in the mats. The result of microelectrode experiments revealed that the O2/S2- supply ratio as a reaction-controlling factor was 0.45 which is a suitable range for sulfur formation. The results of CARD-FISH analysis suggested that Sulfurimonas sp. related bacteria were active sulfur-oxidizing bacteria producing sulfur from H2S and responsible for the formation of filamentous sulfur.

  305. Hydrogen production potentials and fermentative characteristics of various substrates with different heat-pretreated natural microflora Peer-reviewed

    Yohei Akutsu, Dong-Yeol Lee, Yu-You Li, Tatsuya Noike

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 34 (13) 5365-5372 2009/07

    DOI: 10.1016/j.ijhydene.2009.04.052  

    ISSN: 0360-3199

    eISSN: 1879-3487

  306. 硫黄酸化細菌を利用したメタン発酵槽の微好気環境下におけるバイオガス脱硫 Peer-reviewed

    小林拓朗, 李玉友, 久保田健吾, 原田秀樹, 前田武巳, 河合和保, 吉田尊彦

    土木学会論文集 65 (2) 104-113 2009/06

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscejg.65.104  

    ISSN: 1880-6082

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    Biological removal of hydrogen sulfide in biogas, which was produced from an anaerobic digester treating cattle manure with a HRT of 25 days, was carried out by adding a low amount of air to the headspace of the digester (approximately 1% of oxygen concentration in the digester). The concentration of hydrogen sulfide was successfully reduced from 3,500 ppm to a low level of 1,100 ppm after air adding. A microbial mat with an elemental sulfur content of 90% per g-TS was developed in the headspace of the digester as a result of the sulfide oxidation. Cloning analysis revealed that close-relatives of Halothiobacillus neapolitanus and Sulfurimonas sp., both known as sulfide oxidizer, were predominant in the mat and might be responsible for the sulfide oxidation and for the elemental sulfur accumulation under microaerophilic environment. A microbial sulfide oxidation activity test demonstrated that the wetness of the mat is important to the microbial sulfide oxidation activity. These results suggest that an appropriate design for microbial habitat in a digester is one of the important factors for the biological hydrogen sulfide removal.

  307. Thermophilic fermentative hydrogen production from starch-wastewater with bio-granules Peer-reviewed

    Yohei Akutsu, Dong-Yeol Lee, Yong-Zhi Chi, Yu-You Li, Hideki Harada, Han-Qing Yu

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 34 (12) 5061-5071 2009/06

    DOI: 10.1016/j.ijhydene.2009.04.024  

    ISSN: 0360-3199

  308. CFD simulation of mixing in anaerobic digesters Peer-reviewed

    Mitsuharu Terashima, Rajeev Goel, Kazuya Komatsu, Hidenari Yasui, Hiroshi Takahashi, Y. Y. Li, Tatsuya Noike

    BIORESOURCE TECHNOLOGY 100 (7) 2228-2233 2009/04

    DOI: 10.1016/j.biortech.2008.07.069  

    ISSN: 0960-8524

    eISSN: 1873-2976

  309. Rapid and accurate determination of VFAs and ethanol in the effluent of an anaerobic H-2-producing bioreactor using near-infrared spectroscopy Peer-reviewed

    Meng-Lin Zhang, Guo-Ping Sheng, Yang Mu, Wei-Hua Li, Han-Qing Yu, Hideki Harada, Yu-You Li

    WATER RESEARCH 43 (7) 1823-1830 2009/04

    DOI: 10.1016/j.watres.2009.01.018  

    ISSN: 0043-1354

  310. Effects of Temperature and substrate concentration on continuous hydrogen fermentation of starch Peer-reviewed

    Yohei AKUTSU, Yu-You LI, Hideki HARADA, Han-Qing YU

    International Journal of Hydrogen Energy 34 (6) 2558-2566 2009/03

  311. Effect of iron concentration on continuous H-2 production using membrane bioreactor Peer-reviewed

    Dong-Yeol Lee, Yu-You Li, You-Kwan Oh, Mi-Sun Kim, Tatsuya Noike

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 34 (3) 1244-1252 2009/02

    DOI: 10.1016/j.ijhydene.2008.11.093  

    ISSN: 0360-3199

  312. Continuous H(2) production by anaerobic mixed microflora in membrane bioreactor Peer-reviewed

    Dong-Yeol Lee, Yu-You Li, Tatsuya Noike

    BIORESOURCE TECHNOLOGY 100 (2) 690-695 2009/01

    DOI: 10.1016/j.biortech.2008.06.056  

    ISSN: 0960-8524

  313. Upgrading of the anaerobic digestion of waste activated sludge by combining temperature-phased anaerobic digestion and intermediate ozonation Peer-reviewed

    T. Kobayashi, Y. Y. Li, H. Harada, H. Yasui, T. Noike

    WATER SCIENCE AND TECHNOLOGY 59 (1) 185-193 2009

    DOI: 10.2166/wst.2009.510  

    ISSN: 0273-1223

  314. 乳牛ふん尿の嫌気性自己分解によるメタン発酵スタートアップ方法およびその過程における微生物群集構造の変化 Peer-reviewed

    安田大介, 小林拓朗, 李玉友, 原田秀樹, 岡庭良安

    廃棄物学会論文誌 19 (6) 373-381 2008/12

    Publisher: Japan Society of Material Cycles and Waste Management

    DOI: 10.3985/jswme.19.373  

    ISSN: 1883-1648

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    A start-up procedure for mesophilic methane fermentation digestion from dairy cattle manure without inoculum was investigated using a laboratory-scale continuously-stirred tank reactor. The reactor was first operated in batch mode by diluting the cattle manure to TS 1.5%. Gas production greatly increased from day 17 to 22 and then decreased. VFA first increased and reached a peak on day 22, then gradually decreased. After 37 days of batch mode operation, the reactor was changed to continuous mode operation, and the HRT was shortened in increments from 100 days to 50 days, and then to 30 days on day 70. The start-up period consists of two characteristic phases. In the first phase, VFA accumulation was observed because the methane production rate was low. In the second phase, rapid VFA degradation with an increase in methane production was observed. Microbial community shift during the start-up period was monitored using molecular techniques. Results of clone library analysis suggest that during self-digestion, Methanosarcina grew gradually and became predominant at day 30, though they were not detected at the beginning. Population dynamics of the archaeal community were investigated with real-time PCR. During the transition from the first phase to the second phase, the digester showed significant increase in the Methanosarcina rRNA gene. The population of Methanosarcina correlates with the biogas production rate. A start-up method by self-digestion of dairy cattle manure was established in this research.

  315. Effects of seed sludge on fermentative characteristics and microbial community structures in thermophilic hydrogen fermentation of starch Peer-reviewed

    Yohei Akutsu, Yu-You Li, Madan Tandukar, Kengo Kubota, Hideki Harada

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 33 (22) 6541-6548 2008/11

    DOI: 10.1016/j.ijhydene.2008.08.038  

    ISSN: 0360-3199

  316. DHSリアクターによる無曝気方式硝化プロセスの処理特性 Peer-reviewed

    服部賢, 小地沢俊宏, 渡辺悠介, タンドカール マダン, 久保田健吾, 李玉友, 原田秀樹

    環境工学研究論文集 45 317-324 2008/11

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/proes1992.45.317  

    ISSN: 1341-5115

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    The objective of this study is to evaluate applicability of DHS reactor to nitrification process receiving a high strength ammonium influent. The most prominent advantage of DHS reactor is no need for external aeration because sponge carriers are exposed to air. DHS reactor in this study was operated with an artificial wastewater composed of ammonium-nitrogen solely (completely organic free) at ambient temperature. The total experimental period of 350·days was divided into 4 phases according to ammonium-nitrogen loading rate. The maximum nitrification rate of 1.78 kg-N·m-3·d-1 was observed at a HRT of 6 h and at an ammonium-nitrogen loading rate of 2.00 kg-N·m-3·d-1. The maximum oxygen uptake rate was estimated from nitrogen elimination rate to be 66 g-O2·g-VSS-1·d-1. Nitrification potential of DHS reactor was verified to be comparable to other types of nitrification processes equipped with external aeration. There is a need of further investigation to enhance the nitrification performance by overcoming the restriction of partial oxygen permeation into carrier-sponge inward depth.

  317. 下水汚泥の嫌気性消化における無機物の溶解析出挙動の熱力学的解析 Peer-reviewed

    小松和也, 安井英斉, 李玉友, 野池達也

    環境工学研究論文集 45 341-348 2008/11

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/proes1992.45.341  

    ISSN: 1341-5115

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    Recently, anaerobic digestion is re-apprised as treatment process of municipal sludge and many studies are conducted to develop new technologies to improve digestion efficiency. Inorganic ratio in digested sludge increases as more organic components are degraded by improvement of digestion efficiency, and their dissolution/precipitation have more effects on the process performance, such as dewaterability of digested sludge. However, inorganic dissolution/precipitation reaction is excluded in modeling of anaerobic digestion process due to the complexities of the process. Since digested sludge analysis revealed that phosphoric anhydride occupied one-fourth of total ash content and main soluble components were PO4-P, Ca and Mg, the mathematical model for prediction of inorganic dissolution/precipitation in anaerobic digestion was composed based on the reported prediction model of recycle phosphorus loads from anaerobic digestion. By considering the solubility products of precipitated phosphate and modifying release rate of Ca and Al from feed sludge components in the reported model, it was possible to calculate soluble PO4-P, Ca and Mg concentration in the digested sludge based on inorganic composition of feed sludge and digester operating conditions.

  318. Behavior of extracellular polymers and bio-fouling during hydrogen fermentation with a membrane bioreactor Peer-reviewed

    Dong-Yeol Lee, Yu-You Li, Tatsuya Noike, Gi-Cheol Cha

    JOURNAL OF MEMBRANE SCIENCE 322 (1) 13-18 2008/09

    DOI: 10.1016/j.memsci.2008.04.031  

    ISSN: 0376-7388

  319. A pH- and temperature-phased two-stage process for hydrogen and methane production from food waste Peer-reviewed

    Chun-Feng Chu, Yu-You Li, Kai-Qin Xu, Yoshitaka Ebie, Yuhei Inamori, Hai-Nan Kong

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 33 (18) 4739-4746 2008/09

    DOI: 10.1016/j.ijhydene.2008.06.060  

    ISSN: 0360-3199

    eISSN: 1879-3487

  320. 混合細胞群によるでんぷんの中温連続式水素発酵におよぼすC/Nの影響 Peer-reviewed

    堆洋平, 李玉友, 原田秀樹

    環境技術 37 (9) 664-670 2008/08

    Publisher: Society of Environmental Conservation Engineering

    DOI: 10.5956/jriet.37.664  

    ISSN: 0388-9459

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    The effects of C/N on mesophilic continuous hydrogen fermentation were investigated by varying C/N from 3 to 222. A total of 6 identical completely stirred tank reactors (CSTRs) were separately operated at each C/N. This study revealed that C/N is an important parameter for hydrogen fermentation. Suitable C/N values for mesophilic continuous hydrogen fermentation were between 3-22. When C/N was higher than 22, substrate degradation efficiency, bacterial growth and hydrogen yield were decreased, respectively. The stoichiometric equation of hydrogen fermentation at C/N 5 was expressed as follows: starch → 1.67n H2 + 1.31n CO2 + 0.76n butyrate + 0.54n acetate + 0.14n biomass (C5H8.42O2.98N0.99S0.02) . It was also indicated that part of the hydrogen produced was consumed by hydrogentrophic homoacetogenes.

  321. 余剰活性汚泥の嫌気性自己分解によるメタン発酵スタートアップ方法及びその過程における微生物群構造の変化 Peer-reviewed

    小林拓朗, 安田大介, 李玉友, 久保田健吾, 原田秀樹, 岡庭良安

    水環境学会誌 31 (9) 525-532 2008/08

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe.31.525  

    ISSN: 0916-8958

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    The start-up of mesophilic anaerobic digestion from waste activated sludge with internal inoculum was carried out in a laboratory-scale completely mixed reactor. The microbial community shift during the start-up period was monitored by molecular techniques. The self-degradation period, when the digester was operated in batch mode, consists of two characteristic phases, acidogenic (A) phase and methanogenic (M) phase. During the A phase, Volatile Fatty Acid (VFA) accumulation and a low level of methane production were observed. On the other hand, during the M phase, rapid VFA degradation and an increase in methane production were observed. Clone analysis results suggest that after self-degradation, Methanosarcina and Methanoregula were predominant at day 30, while the former was detected at low level (4%) and the latter was not detected at day 0. The population dynamics of the archaeal community were investigated by Real-time PCR. During the transition from A phase to M phase, the digester showed a significant increase by one order in the Methanosarcina rRNA gene. A significant positive correlation between the population of Methanosarcina and methane production rate was observed.

  322. Dispersion analysis of an acidogenic UASB reactor Peer-reviewed

    Ting-Ting Ren, Yang Mu, Han-Qing Yu, Hideki Harada, Yu-You Li

    CHEMICAL ENGINEERING JOURNAL 142 (2) 182-189 2008/08

    DOI: 10.1016/j.cej.2007.11.028  

    ISSN: 1385-8947

  323. Enhanced anaerobic ruminal degradation of bulrush through steam explosion pretreatment Peer-reviewed

    Zheng-Bo Yue, Rong-Hua Liu, Han-Qing Yu, Hong-Zhang Chen, Bin Yu, Hideki Harada, Yu-You Li

    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 47 (16) 5899-5905 2008/08

    DOI: 10.1021/ie800202c  

    ISSN: 0888-5885

  324. 水質改善効果とエネルギー消費を考慮した下水処理システムの環境性能評価 Peer-reviewed

    米本剛史, 李玉友

    下水道協会誌 45 (549) 81-91 2008/07

  325. Surfactant-enhanced anaerobic acidogenesis of Canna indica L. by rumen cultures Peer-reviewed

    Zheng-Bo Yue, Han-Qing Yu, Zhen-Hu Hu, Hideki Harada, Yu-You Li

    BIORESOURCE TECHNOLOGY 99 (9) 3418-3423 2008/06

    DOI: 10.1016/j.biortech.2007.08.010  

    ISSN: 0960-8524

  326. 状態変数分類による湿潤系バイオマスのメタン発酵プロセスモデル Peer-reviewed

    安井英斉, 小松 和也, ラジブ ゴエル, 李 玉友, 野池 達也

    土木学会論文集G 64 (2) 132-143 2008/06

    DOI: 10.2208/jscejg.64.132  

  327. Optimization of hydrogen production in a granule-based UASB reactor Peer-reviewed

    Bai-Hang Zhao, Zheng-Bo Yue, Quan-Bao Zhao, Yang Mu, Han-Qing Yu, Hideki Harada, Yu-You Li

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 33 (10) 2454-2461 2008/05

    DOI: 10.1016/j.ijhydene.2008.03.008  

    ISSN: 0360-3199

  328. でんぷんの高温水素発酵細菌群の構造解析、生物工学学会誌 Peer-reviewed

    堆洋平, 李玉友, 久保田健吾, 原田秀樹

    生物工学学会誌 86 (4) 157-163 2008/04

  329. Biohydrogen production with mixed anaerobic cultures in the presence of high-concentration acetate Peer-reviewed

    Yi Wang, Quan-Bao Zhao, Yang Mu, Han-Qiny Yu, Hideki Harada, Yu-You Li

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 33 (4) 1164-1171 2008/02

    DOI: 10.1016/j.ijhydene.2007.12.018  

    ISSN: 0360-3199

  330. 下水処理におけるエネルギー消費に及ぼす処理方式および処理規模の影響に関する統計分析 Peer-reviewed

    米本剛史, 李玉友

    下水道協会誌 45 (544) 96-105 2008/02

  331. H 2 production from high-solid food waste using anaerobic mixed microflora under thermophilic condition

    Dong-Yeol Lee, Yoshitaka Ebie, Kai-Qin Xu, Yu-You Li, Yuhei Inamori

    17th World Hydrogen Energy Conference 2008, WHEC 2008 2 1190-1194 2008

  332. Modified ADM1 structure for modelling municipal primary sludge hydrolysis Peer-reviewed

    H. Yasui, R. Goel, Y. Y. Li, T. Noike

    WATER RESEARCH 42 (1-2) 249-259 2008/01

    DOI: 10.1016/j.watres.2007.07.004  

    ISSN: 0043-1354

  333. Evaluation of state variable interface between the activated sludge models and anaerobic digestion model no 1 Peer-reviewed

    H. Yasui, K. Komatsu, R. Goel, Y. Y. Li, T. Noike

    WATER SCIENCE AND TECHNOLOGY 57 (6) 901-907 2008

    DOI: 10.2166/wst.2008.070  

    ISSN: 0273-1223

  334. Analysis of microbial community structure and diversity in the thermophilic anaerobic digestion of waste activated sludge Peer-reviewed

    T. Kobayashi, Y. Y. Li, H. Harada

    WATER SCIENCE AND TECHNOLOGY 57 (8) 1199-1205 2008

    DOI: 10.2166/wst.2008.079  

    ISSN: 0273-1223

  335. 濃縮余剰汚泥の中温消化と高温消化の性能比較 Peer-reviewed

    Sangsan Teepyobon, 李玉友, 野池達也, 安井秀斉

    下水道協会誌 44 (542) 124-134 2007/12

  336. 濃縮余剰汚泥の中温消化と高温消化における微生物群集構造の変化 Peer-reviewed

    小林拓朗, 李玉友, 原田秀樹

    下水道協会誌 44 (542) 135-148 2007/12

  337. Kinetic analysis of anaerobic digestion of cattail by rumen microbes in a modified UASB reactor Peer-reviewed

    Zhen-Hu Hu, Han-Qing Yu, Zheng-Bo Yue, Hideki Harada, Yu-You Li

    BIOCHEMICAL ENGINEERING JOURNAL 37 (2) 219-225 2007/11

    DOI: 10.1016/j.bej.2007.04.013  

    ISSN: 1369-703X

  338. 温度フェーズと中間オゾン処理を組合わせたプロセスによる余剰汚泥嫌気性消化の促進効果 Peer-reviewed

    小林拓朗, 李玉友, 原田秀樹, 安井英斉, 野池達也

    環境工学研究論文集 44 703-712 2007/11

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/proes1992.44.703  

    ISSN: 1341-5115

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    Upgrading of the anaerobic digestion of waste activated sludge (WAS) by the combination of temperature-phased two stage and intermediate ozonation was investigated by a continuous experiment with two processes, TM and TOM. The TM process is a temperature-phased two stage system which consists of a thermophlic digester with 5 liters of volume and mesophilic digester with 5 liters of volume in series. The TOM process is a temperature-phased two stage process with the intermediate ozonation. Two processes were operated at a hydraoulic retention times of 30 days for over 123 days. Methane production rate, CODCr removal efficiency and dewaterability of TOM process were superior to those of TM process. It is the effect of temperature-phase that enhancing hydrolysis at thermophilic temperature and degradation of remaining soluble organic matters at mesophilic temperature, which leads to the improvement of dewaterability and decreasing CODCr in the supernatant effluent. The intermediate ozonation can save the ozone dose amount compared to the pretreatment and promote degradation of particle organic matters in the effluent from thermophilic reactor.<BR>The effects of the temperature-phase and the intermediate ozonation resulted in increasing CODcr removal efficiency of TOM process, 1.36 times higher than that of mesophilic anaerobic digestion.

  339. ASMのDeath & regeneration conceptを用いた活性汚泥処理プロセスと嫌気性消化プロセスの数学的統合 Peer-reviewed

    安井英斉, 小松 和也, ラジブ ゴエル, 安井英斉, 李 玉友, 野池 達也

    環境工学研究論文集 44 217-227 2007/11

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/proes1992.44.217  

    ISSN: 1341-5115

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    Modifications of entry organic fraction in Anaerobic Digestion Model No.1 (ADM1) was studied to improve continuity from activated sludge process to the subsequent anaerobic digestion process. In this paper, fractions of XS, XH and XI defined by ASM were compared with those measured under anaerobic condition. Eight datasets from author's batch experiments and seven datasets from literatures were used for the comparison. It was found that respective ASM state variables were well correlated to those under anaerobic condition, indicating XC and XI in current ADM1 structure could be replaced with the three ASM constituents. To explain the fate of XH in the anaerobic condition, death-regeneration concept was applied where anaerobes grow from the anaerobically decayed XH with low yield constants that were elaborated through available information of ASM and thermodynamic calculation. As the stoichiometrics have a mutual background, the response of COD compounds in decay stage is possible to use under both aerobic and anaerobic conditions.

  340. 中温と高温の嫌気性消化汚泥の粘性特性の比較 Peer-reviewed

    寺島光春, ラジブ ゴエル, 小松 和也, 安井英斉, 高橋 弘, 李 玉友, 野池 達也

    環境工学研究論文集 44 687-694 2007/11

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/proes1992.44.687  

    ISSN: 1341-5115

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    Rheological characteristics of anaerobically digested mesophilic and thermophilic sludge was studied using pipe-line pressure-drop measurement apparatus. Anaerobically digested mesophilic and thermophilic sludge samples were collected from anaerobic digesters operated at 35°Cand 55°C respectively. Rheology of both the sludge was similar to pseudoplastic fluid and was modeled using power equation. The value of model parameters of pseudo-plastic viscosity (μp) and flow behavior index (n) were found to depend on sludge concentration (X). The empirical equations describing the relationship between sludge concentration and model parameters were μp=0.018e (0.071X) ; n=0.68e (-0.0069X) for thermophilic sludge and μp=0.0095e (0.070X) ; n=0.66e (-0.0069X) for mesophilic sludge. The value of μp for thermophilic sludge was found to be significantly lower than mesophilic sludge. Reducing the temperature from 55°C to 32°C during viscosity measurement of thermophilic sludge resulted in a μp value, which was still lower than the mesophilic sludge. These observations suggest that the characteristic of solid in sludge is more influential than temperature in governing the sludgeviscosity. The lower viscosity of thermophilic sludge can be used to operate high rate anaerobic digestion process at high solid concentration without additional energy input.

  341. 水素生成ポテンシャルに及ぼす基質と細菌群の影響 Peer-reviewed

    堆洋平, 李玉友

    廃棄物学会論文誌 17 (5) 335-343 2007/10

    DOI: 10.3985/jswme.18.335  

  342. 嫌気性混合細菌によるグリセロールの水素生成ポテンシャル Peer-reviewed

    堆洋平, 李玉友, 原田秀樹

    水環境学会誌 30 (9) 535-539 2007/09

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe.30.535  

    ISSN: 0916-8958

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    The hydrogen production potentials of glycerol were investigated using eight types of seed microorganism in this study. The seed microorganisms were obtained from a thermophilic acidgenic reactor, a mesophilic anaerobic digester, a thermophilic anaerobic digester, a soybean meal silo, organic fractural municipal solid waste (OFMSW), activated sludge, cattle manure, and soil. The highest hydrogen production potential of glycerol (2.05 mmol H2 · g-1-glycerol) was obtained using OFMSW seed microorganisms. The hydrogen production potentials of glycerol in this study were lower than those of sugars in previous studies. There was little difference between the metabolic patterns of the cultures. The major products produced by the seed microorganisms were 1,3-propanediol and acetic acid. The chemical oxygen demand (CODCr) yields of 1,3-propanediol and acetic acid from initial glycerol concentration (5 gCODcr · l-1) were 50 - 70% and 15 - 20%, respectively.

  343. 余剰活性汚泥の高温嫌気性消化における微生物群集の構造と多様性の解析 Peer-reviewed

    小林拓朗, 李玉友, 原田秀樹

    水環境学会誌 30 (7) 369-375 2007/08

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe.30.369  

    ISSN: 0916-8958

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    The microbial community structures present in the thermophilic anaerobic digestion (TAD) of waste-activated sludge (WAS) and WAS were analyzed with molecular biological techniques including polymerase chain reaction-denature gradient gel electrophoresis (PCR-DGGE), real-time PCR, and cloning analysis. No significant differences in the microbial community structures present in TAD were observed among three reactors operated with hydraulic retention times of 10, 20 and 30 days. The microbial community present in TAD had less diversity than that present in WAS, and the sequences obtained in WAS were not present in TAD by the cloning analysis. In the TAD bacterial clone library, 97.5% of the total clones belonged to Firmicutes and 73.1% belonged to Coprothermobacter. Real-time PCR and cloning analyses revealed that the number of Methanosarcina thermophila, which is an acetoclastic methanogen, was larger than that of Methanoculleus thermophilus, which is a hydrogenotrophic methanogen, in terms of the numbers of copies of 16S rDNA.

  344. 余剰活性汚泥の高温嫌気性消化における微生物群集の構造と多様性の解析 Peer-reviewed

    小林拓朗, 李玉友, 原田秀樹

    水環境学会誌 30 (7) 369-375 2007/07

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe.30.369  

    ISSN: 0916-8958

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    The microbial community structures present in the thermophilic anaerobic digestion (TAD) of waste-activated sludge (WAS) and WAS were analyzed with molecular biological techniques including polymerase chain reaction-denature gradient gel electrophoresis (PCR-DGGE), real-time PCR, and cloning analysis. No significant differences in the microbial community structures present in TAD were observed among three reactors operated with hydraulic retention times of 10, 20 and 30 days. The microbial community present in TAD had less diversity than that present in WAS, and the sequences obtained in WAS were not present in TAD by the cloning analysis. In the TAD bacterial clone library, 97.5% of the total clones belonged to Firmicutes and 73.1% belonged to Coprothermobacter. Real-time PCR and cloning analyses revealed that the number of Methanosarcina thermophila, which is an acetoclastic methanogen, was larger than that of Methanoculleus thermophilus, which is a hydrogenotrophic methanogen, in terms of the numbers of copies of 16S rDNA.

  345. Thermophilic anaerobic digestion of thermal pretreated WWTP sludge Peer-reviewed

    Yun HAN, Yuyou LI, Yongxiang REN, Feng YAN

    Acta Scientiae Circumstantiae 27 (7) 1174-1180 2007/07

  346. Optimization of anaerobic acidogenesis of an aquatic plant, Canna indica L., by rumen cultures Peer-reviewed

    Zheny-Bo Yue, Han-Qing Yu, Hideki Harada, Yu-You Li

    WATER RESEARCH 41 (11) 2361-2370 2007/06

    DOI: 10.1016/j.watres.2007.02.031  

    ISSN: 0043-1354

  347. Hydrogen and methane production from organic waste by two-phase circulation process Peer-reviewed

    T.Noike, M. Ohba, T. Hojo, Y. Y. Li

    The Proceedings of the 4th International workshop on Innovative Anaerobic Technology 59-70 2007/02

  348. 高温・中温のハイブリッドフローによるオゾン処理嫌気性消化プロセスの効率化 Peer-reviewed

    小松和也, 安井秀斉, 李玉友, 野池達也

    環境工学研究論文集 43 31-38 2006/11

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/proes1992.43.31  

    ISSN: 1341-5115

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    The performance of thermophilic (55°C) and mesophilic (35°C) anaerobic digestion with ozonation were evaluated by pilot-scale experiments. Under thermophilic condition, the degradation efficiency of VSS compounds was 5.5% higher (85.3%) than that of mesophilic condition at 0.9-1.0kgTVS/m3/day and consumption of ozone per decomposed VSS was reduced by 18%. However, the biogas conversion was not improved due to remaining considerable organic fraction in soluble form. This fraction was found to be readily degraded by mesophilic microbes under mesophilic condition. Based on the results, the themophilic-mesophilic-phased digestion process with ozonation, where ozonated sludge was decomposed rapidly in the thermophilic digester and the residual soluble organic fraction in the thermophilic digested sludge was decomposed to biogas in the mesophilic digester, was developed. The new flowscheme performed 8.1% higher TVS degradation efficiency and corresponding more biogas conversion due to improvement of TVS degradation. Ozone consumption in the new flowscheme was 18% lower than mesophilic condition.

  349. A new two-phase process for waterless methane fermentation treating the organic fraction of MSW Peer-reviewed

    Y. Y. Li, T. Noike, O. Mizuno, K. Funaishi

    Journal of Environmental Engineering and Management 16 (5) 297-302 2006/10

  350. 混合微生物群によるでんぽんの高温水素発酵特性 Peer-reviewed

    堆洋平, 李玉友

    水環境学会誌 29 (10) 627-633 2006/10

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe.29.627  

    ISSN: 0916-8958

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    The effects of inoculum on the characteristics of thermophilic hydrogen fermentation were investigated by performing a long-term continuous experiment lasting more 50 days. Continuous hydrogen fermentation of starch was conducted under thermophilic condition (55°C) by using five types of inoculum, including thermophilically digested sludge of activated sludge, cattle manure and sewage sludge, compost, and thermophilic acidogenic sludge. Five chemostat-type reactors were operated at an HRT (hydraulic retention time) of 24h. Stable hydrogen production was achieved in each culture without any methane production during the long-term continuous experiment. The highest hydrogen yield (2.32 mol H2/mol hexose converted) was obtained by thermophilically digested sludge of activated sludge. The thermophilic hydrogen fermentation of starch by thermophilically digested sludge of activated sludge was expressed using the following stoichiometric equation : starch → 2.32n H2 + 2.14n CO2 + 0.5n acetate + 0.63n butyrate + 0.11n biomass (C5H9O3N).

  351. 濃縮余剰活性汚泥の中温嫌気性消化特性 Peer-reviewed

    Sangsan Teepybon, 李玉友, 野池達也

    環境技術 35 (9) 668-675 2006/09

    Publisher: Society of Environmental Conservation Engineering

    DOI: 10.5956/jriet.35.668  

    ISSN: 0388-9459

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    The effect of HRT on the mesophilic anaerobic digestion of concentrated waste activated sludge was investigated using a continuous experiment. A total of four laboratory-scale CSTR type digesters were operated at a HRT 5, 10, 15 and 30 days, respectively. The degradation efficiencies of VS, proteins, carbohydrates and lipids increased with the increase of HRT and were, respectively, 43%, 42%, 37%, and 52% at a HRT of 30 days. A maximum biogas production was obtained at HRT 30 days which was 16l/l-influent with yield of 460 ml/g-influent VS. The biogas production decreased 20% when HRT was shortened from 30 days to 10 days, while the contents of CH4and H2S in biogas were stable at 62% and 1200 PPM.<BR>A kinetic analysis indicated that the hydrolysis reaction is the rate-limiting step in the overall process of anaerobic digestion of waste activated sludge. The degradation rates of VS, COD, carbohydrates, proteins, lipids were expressed as the first order reaction, respectively.

  352. 二相循環式水素・メタン発酵プロセスにおける微生物群集の構造解析 Peer-reviewed

    大羽美香, 李玉友, 野池達也

    水環境学会誌 29 (7) 399-406 2006/07

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe.29.399  

    ISSN: 0916-8958

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    The structure of a microbial community during a two-phase circulating process for the hydrogen and methane fermentation of potato was investigated using a molecular biological approach. The process was performed using a mixing tank, a thermophilic acidogenic reactor (55°C) and a mesophilic methanogenic reactor (36°C) connected in series with the recirculation of methanogenic mixed liquor to the mixing tank. A continuous experiment was conducted by changing the process hydraulic retention time (HRT) stepwise from 56 days to 30 days, then 20 days and 15 days. A stable and high-rate hydrogen and methane fermentation was possible at a process HRT of 20 days with a hydrogen production rate of 3.6 l·l-1·d-1 and a methane production rate of 3.4 l·l-1·d-1. Denaturing gradient gel electrophoresis (DGGE) with 16S rRNA gene-targeted polymerase chain reaction (PCR) analysis was employed to identify the structure of a microbial community at various conditions for each reactor. Thermoanaerobacterium thermosaccharolyticum and Clostridium sporosphaeroides were considered to be the major hydrogen-producing bacteria in the thermophilic acidogenic reactor, whereas Methanosarcina siciliae and Methanoculleus bourgensis were considered, respectively, to be the acetate-utilizing and hydrogen-utilizing methanogenic archaea in the mesophilic methanogenic reactor.

  353. An approach for substrate mapping between ASM and ADM1 for sludge digestion Peer-reviewed

    H. Yasui, M. Sugimoto, K. Komatsu, R. Goel, Y. Y. Li, T. Noike

    WATER SCIENCE AND TECHNOLOGY 54 (4) 83-92 2006

    DOI: 10.2166/wst.2006.529  

    ISSN: 0273-1223

  354. でんぷんの連続式水素発酵に及ぼすpHと窒素濃度の影響 Peer-reviewed

    堆洋平, 李玉友, 野池達也

    環境工学研究論文集 42 423-433 2005/12

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/proes1992.42.423  

    ISSN: 1341-5115

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    The effects of pH and nitrogen concentration on anaerobic hydrogen fermentation by a mixed microflora were investigated using starch as a sole substrate. Two series of experiments were conducted by using a chemostat-type reactor with a pH controller. The experiment1 was conducted to investigate the effects of pH on the hydrogen fermentation at a nitrogen limited condition by controlling pH to be 4.5, 5.5 and 6.0 respectively. It was revealed that nitrogen limitation at all pHs caused deterioration of bacterial growth and substrate decomposition efficiency. Lactate was significantly produced at pH6.0 under nitrogen limitation. The experiment2 was conducted to clarify the influence of nitrogen concentration on the continuous hydrogen production by changing the nitrogen concentration of the substrate from TAN (Total Ammonia Nitrogen) 30 to 2000mg/L. The hydrogen production was stable with a hydrogen yields of about 1.40-1.53mol H2/mol hexose-converted during a long time continuous operation of over two months at the nitrogen concentration ranging from TAN300 to 2000mg/L. The results of this research indicated that nitrogen has a significant effect on the continuous hydrogen fermentation and that the suitable C/N ratio ranges 3 to 20

  355. 嫌気性消化におけるオゾン処理による汚泥減量の実証 Peer-reviewed

    小松和也, 安井秀斉, 李玉友, 野池達也

    環境工学研究論文集 42 385-393 2005/12

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/proes1992.42.385  

    ISSN: 1341-5115

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    A modified anaerobic digestion process was verified by full-scale experiments (digester volume of 1, 125m3) at a municipal wastewater treatment plant. To improve organic degradation, ozonation and solid-liquid separation of digested sludge were conducted in this process. The ozonation changed the inert organic solids in the digested sludge to biodegradable ones and the ozonated sludge was decomposed biologically in the digester. The solid-liquid separation extended sludge retention time and improved degradation of organic solids. High digestion efficiency of more than 80% was achieved at 5.8-6.1% TS concentration, while 63% at 1.5-1.6% TS concentration of conventional chemostat operation. Biogas production increased over 1.3 times corresponding to improvement of TVS degradation. Improved organic degradation caused more inorganic content of digested sludge. Water content of dewatered sludge cake decreased to less than 70%. Sludge cake production was reduced to 30% of conventional one due to higher digestion efficiency and lower water content.

  356. 活性汚泥モデルを用いた嫌気性消化加水分解過程における余剰汚泥の成分分画 Peer-reviewed

    安井秀斉, 杉本美青, 小松和也, ラジブゴエル, 李玉友, 野池達也

    環境工学研究論文集 42 395-406 2005/12

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/proes1992.42.395  

    ISSN: 1341-5115

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    Kinetic modelling of hydrolysis stage of municipal activated sludge, which is presumed to be rate-limiting step in the anaerobic sludge digestion process, was studied by measuring methane production rate (MPR) in anaerobic batch tests. The MPR curves revealed the degradable organic components in municipal sludge could be classified into two fractions having different kinetics. The first fraction (XS1) constituted about 55% of the sludge COD and degraded with first order kinetics. The second fraction (XS2), which degraded during the initial phase, accounted for about 21% of sludge COD. The degradation kinetics for XS2, was expressed by Contois-type equation with respect to concentration of substrate in the fed sludge and that of active biomass in the mixture. Simultaneous batch aerobic respirometric tests showed the activated sludge was composed of 53% heterotrophic biomass (XH-Aerobe) COD and 20% of slowly biodegradable COD (XS), that had same kinetic expressions as observed in the batch anaerobic tests. The observed correlation between substrate fractions suggests XS1 and XS2 could be directly mapped to aerobic state variables of XH-Aerobe and XS respectively. The degradation of XS1 seems to be anaerobic decay of XH-Aerobe while XS2 is thought to be hydrolysis of XS by microcosm of the sludge.

  357. 二相循環プロセスによるジャガイモ加工廃棄物の無希釈水素・メタン発酵の特性 Peer-reviewed

    大羽美香, 李玉友, 野池達也

    水環境学会誌 28 (10) 629-636 2005/10

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe.28.629  

    ISSN: 0916-8958

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    A new type of two-phase process for producing hydrogen and methane from food waste was investigated using potato processing waste in this study. In this process a mixing tank, a thermophilic acidogenic reactor (55°C) and a mesophilic methanogenic reactor (36°C) were used in series. The methane-fermentation-mixed liquor was returned to the mixing tank for the dilution of influent food waste. A continuous experiment was conducted by changing the whole process hydraulic retention time (HRT) stepwise from 56 days to 30 days, then 20 days and 15 days. The process was successfully performed for over 290 days until the HRT was reduced to 15 days. A stable and high hydrogen production yield of 1.67 mol H2·mol-1 degraded hexose with a VFA concentration of 10000 to 25000 mgHAc·l-1 was obtained in the thermophilic acidogenic reactor, while a high efficiency of methane fermentation was achieved in the mesophilic methanogenic reactor. As a result, the high VS removal (92%) and total CODcr removal (85-90%) were achieved by the new process at HRTs of 20 to 56 days. The suggested new process was not only possible for the dilution-free treatment of potato processing waste, but also useful for continuous hydrogen fermentation at a high rate.

  358. 好気性可溶化プロセスを適用した生ごみの二相式メタン発酵特性―好気性可溶化プロセスの評価 Peer-reviewed

    坂本勝, 鈴木昌治, 李玉友, 野池達也

    廃棄物学会論文誌 16 (5) 359-367 2005/05

    Publisher: Japan Society of Material Cycles and Waste Management

    DOI: 10.3985/jswme.16.369  

    ISSN: 1883-1648

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    We evaluated the aerobic solubilization level and the application of two-phase methane fermentation in a two-phase methane fermentation system that uses an aerobic solubilization process to treat food wastes and garbage. Since the average particle diameter was 86μm, we found that the aerobic solubilization process was the same level as other solubilization methods. By comparing the microbial activities of the aerobic solubilization and acidification effluents in a batch test, we observed that the biogas and methane gas production and the methane gas content of the latter effluent were more than those of the former effluent. When garbage is processed using the aerobic solubilization process, a two-phase methane fermentation is more efficient than a single-phase one. As a result of investigating the microflora using the PCR-DGGE method, the microbes in the aerobic solubilization differed from those in the acidification, and it also became clear that there was co-metabolism between the microbes in each one.

  359. 複合基質からの嫌気性水素生成における回分発酵と連続発酵の比較 Peer-reviewed

    河野孝志, 和田克士, 李玉友, 野池達也

    廃棄物学会論文誌 16 (5) 350-359 2005/05

    Publisher: Japan Society of Material Cycles and Waste Management

    DOI: 10.3985/jswme.16.350  

    ISSN: 1883-1648

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    This study was conducted to compare the performances of batch and continuous hydrogen fermentation of a mixed substrate (dog food) using a microflora. Hydrogen gas production, substrate decomposition, and metabolic pattern were evaluated for the comparison. The batch reactor was operated at 35°C with a constant pH (ranging from 4.0 to 7.5) and various substrate concentrations (TS 2%, 5% and 10%) . Hydrogen fermentation was greatly affected by pH at each TS concentration and the optimal pHs for obtaining maximum hydrogen yield were identified to be 4.5-5.5 for TS 2%, 5.5 for TS 5% and 6.5 for TS 10%. The maximum hydrogen productions at TS 2 %, TS 5 % and TS 10% ranged from 93.9 to 108 mL/g-VS. The H2 yield at the optimal pH was as high as 1.80 mol-H2/ mol-glucose. Butyric acid and acetic acid were the main products at optimal pH, while a complex fermentation pattern was obtained at a pH close to 4.0 or 7.0. In another experiment, the continuous hydrogen fermentation was conducted at 35°C, TS 10%, pH 6.5 and various HRT (from 6.4 to 36.5 hour) . The maximum hydrogen production in the continuous fermentation was as low as 0.21 mol-H2/mol-glucose, which was obtained at an HRT of 12.8 hours. The experimental results indicate that in treating mixed organic wastes continuous hydrogen fermentation is more difficult than batch fermentation.

  360. PCR-DGGE法を用いた廃棄物系バイオマスのメタン発酵槽における微生物群集構造の解析 Peer-reviewed

    大羽美香, Sangsan Teepybon, 安納幸子, 李玉友, 野池達也

    土木学会論文集 (804) 33-42 2005/05

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscej.2005.804_33  

    ISSN: 0289-7806

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    The structure of microbial community in the methane fermentation of solid waste was investigated by using PCR-DGGE method. The experiments were conducted for a total of 12 reactors operated, respectively, at different substrates (including cow manure, waste activated sludge and potato processing waste), different temperatures (mesophilic and thermophilic) and different HRTs. It was found that the microbial communities during the mesophilic and thermophlic condition are basically different, but there was no significant change in the both of eubacteria and archaea for the HRT ranging from 10 to 30days for the same substrate and the same temperature condition. In the thermophilic reactors acclimated with a same seed, the structure of eubateria clearly depended on the acclimated substrate, but the archaea were similar each other. The analysis of 16SrDNA seaquences indicated that the archaeal bands for thermophilic reactor were similar to that of Methanosarcina thermophila and Methanoculleus thermophilus. In the mesophilic rectors, Methanosaeta sp., Methanobrevibacter sp., Methanomicrobiacea, and Methanoculleus palmaeoli were found.

  361. 生ごみの二相式メタン発酵法における油脂の挙動特性 Peer-reviewed

    坂本勝, 鈴木昌治, 李玉友, 野池達也

    工業用水 (557) 53-63 2005/04

  362. 高濃度複合基質の連続的水素発生及び酸生成に及ぼすHRTの影響 Peer-reviewed

    河野孝志, 和田克士, 李玉友, 野池達也

    環境技術 34 (4) 287-294 2005/04

    Publisher: Society of Environmental Conservation Engineering

    DOI: 10.5956/jriet.34.287  

    ISSN: 0388-9459

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    Continuous hydrogen fermentation from a mixed substrate containing carbohydrates, proteins and lipids was investigated using microflora. The experiment was conducted with a chemostat-type reactor at 35°C by using dog food with a constant TS concentration of 100g/L. The hydraulic retention time (HRT) changed from 6.4 to 34.5 hrs at a constant pH condition of 6.5. Continuous and stable hydrogen production was obtained for a long period, ranging from 6.4 to 34.5 hrs. The highest hydrogen production rate was found to be 1.18 L/L/d at an HRT of 12.8 hrs, while the highest hydrogen yield was found to be 0.24 mol-H2/mol-glucose at an HRT of 34.5 hrs. Both the hydrogen production rate and hydrogen yield were significantly lower than those in a batch experiment, indicating that the continuous hydrogen fermentation of the mixed substrate with chemostat-type reactor is difficult. On the other hand, the acidogenic efficiency increased with the increase in HRT, and 40% was obtained at an HRT of 34.5 hrs. The main acidogenic products were acetate and butyrate while some propionate and ethanol were also produced. The results of this study indicate that a long HRT, such as 34.5hrs, is necessary to obtain a high hydrogen yield and acidogenic efficiency for a mixed substrate of dog food.

  363. PCR-DGGE法を用いた水素発酵微生物群集の構造解析 Peer-reviewed

    登坂充博, 李玉友, 野池達也

    土木学会論文集 (790) 1-10 2005/04

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscej.2005.790_1  

    ISSN: 0289-7806

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    A Continuous experiment on the hydrogen fermentation of glucose was conducted to investigate the relationship between the hydrogen productivity and the microbial community of the mixed micro-flora. A total of five different kinds of inoculums including digested sludge, heat treated digested sludge, activated sludge, compost and a special consortium were used as the seeds for five chemostat-type reactors. Each reactor was continuously operated at the same condition of 35&deg;C, a hydraulic retention time 12 hrs and a pH5.5 using a medium with glucose of 10000 mg/L for over two months. It was found that the fermentative pattern and the hydrogen productivity depend on the initial inoculums. The analysis results of PCR-DGGE method and DNA sequence indicates that Clostridium acetobutylicum and Clostridium pasteurianum were the important bacteria in hydrogen fermentation for obtaining a high H2 yield.

  364. でんぷんの連続式水素発酵に及ぼすpHと窒素濃度の影響 Peer-reviewed

    堆洋平, 李玉友, 野池達也

    環境工学研究論文集 42 423-433 2005/04

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/proes1992.42.423  

    ISSN: 1341-5115

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    The effects of pH and nitrogen concentration on anaerobic hydrogen fermentation by a mixed microflora were investigated using starch as a sole substrate. Two series of experiments were conducted by using a chemostat-type reactor with a pH controller. The experiment1 was conducted to investigate the effects of pH on the hydrogen fermentation at a nitrogen limited condition by controlling pH to be 4.5, 5.5 and 6.0 respectively. It was revealed that nitrogen limitation at all pHs caused deterioration of bacterial growth and substrate decomposition efficiency. Lactate was significantly produced at pH6.0 under nitrogen limitation. The experiment2 was conducted to clarify the influence of nitrogen concentration on the continuous hydrogen production by changing the nitrogen concentration of the substrate from TAN (Total Ammonia Nitrogen) 30 to 2000mg/L. The hydrogen production was stable with a hydrogen yields of about 1.40-1.53mol H2/mol hexose-converted during a long time continuous operation of over two months at the nitrogen concentration ranging from TAN300 to 2000mg/L. The results of this research indicated that nitrogen has a significant effect on the continuous hydrogen fermentation and that the suitable C/N ratio ranges 3 to 20

  365. 嫌気性消化におけるオゾン処理による汚泥減量の実証 Peer-reviewed

    小松和也, 安井秀斉, 李玉友, 野池達也

    環境工学研究論文集 42 385-393 2005/04

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/proes1992.42.385  

    ISSN: 1341-5115

    More details Close

    A modified anaerobic digestion process was verified by full-scale experiments (digester volume of 1, 125m3) at a municipal wastewater treatment plant. To improve organic degradation, ozonation and solid-liquid separation of digested sludge were conducted in this process. The ozonation changed the inert organic solids in the digested sludge to biodegradable ones and the ozonated sludge was decomposed biologically in the digester. The solid-liquid separation extended sludge retention time and improved degradation of organic solids. High digestion efficiency of more than 80% was achieved at 5.8-6.1% TS concentration, while 63% at 1.5-1.6% TS concentration of conventional chemostat operation. Biogas production increased over 1.3 times corresponding to improvement of TVS degradation. Improved organic degradation caused more inorganic content of digested sludge. Water content of dewatered sludge cake decreased to less than 70%. Sludge cake production was reduced to 30% of conventional one due to higher digestion efficiency and lower water content.

  366. 活性汚泥モデルを用いた嫌気性消化加水分解過程における余剰汚泥の成分分画 Peer-reviewed

    安井秀斉, 杉本美青, 小松和也, ラジブゴエル, 李玉友, 野池達也

    環境工学研究論文集 42 395-406 2005/04

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/proes1992.42.395  

    ISSN: 1341-5115

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    Kinetic modelling of hydrolysis stage of municipal activated sludge, which is presumed to be rate-limiting step in the anaerobic sludge digestion process, was studied by measuring methane production rate (MPR) in anaerobic batch tests. The MPR curves revealed the degradable organic components in municipal sludge could be classified into two fractions having different kinetics. The first fraction (XS1) constituted about 55% of the sludge COD and degraded with first order kinetics. The second fraction (XS2), which degraded during the initial phase, accounted for about 21% of sludge COD. The degradation kinetics for XS2, was expressed by Contois-type equation with respect to concentration of substrate in the fed sludge and that of active biomass in the mixture. Simultaneous batch aerobic respirometric tests showed the activated sludge was composed of 53% heterotrophic biomass (XH-Aerobe) COD and 20% of slowly biodegradable COD (XS), that had same kinetic expressions as observed in the batch anaerobic tests. The observed correlation between substrate fractions suggests XS1 and XS2 could be directly mapped to aerobic state variables of XH-Aerobe and XS respectively. The degradation of XS1 seems to be anaerobic decay of XH-Aerobe while XS2 is thought to be hydrolysis of XS by microcosm of the sludge.

  367. A new two-phase process for waterless methane fermentation treating the organic fraction of MSW Peer-reviewed

    Y.Y. Li, T. Noike, O. Mizuno, K. Funaishi

    Proceedings of 4th International Symposium on Anaerobic Digestion of Solid Waste (Copenhagen, Denmark) 545-550 2005/04

  368. Hydrogen fermentation of cattle manure Peer-reviewed

    T. Noike, H. Hayakawa, I.B. Ko, T. Kawano, Y. Y. Li

    Proceedings of 4th International Symposium on Anaerobic Digestion of Solid Waste (Copenhagen, Denmark) 299-305 2005/04

  369. An approach for substrate mapping between ASM and ADM1 for sludge digestion Peer-reviewed

    H.Yasui, M. Sugimoto, K. Komatsu, R. Goel, Y. Y. Li, T. Noike

    Proceedings of the First International Workshop on the IWA Anaerobic Digestion Model (1) 73-80 2005/04

  370. 牛ふん尿と生ごみの混合メタン発酵に関する研究 Peer-reviewed

    桜井邦宣, 李玉友, 野池達也

    環境技術 34 (3) 21-218 2005/03

    Publisher: Society of Environmental Conservation Engineering

    DOI: 10.5956/jriet.34.211  

    ISSN: 0388-9459

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    Co-digestion of cow manure (CM) with the organic fraction of municipal solid waste (OFMSW) were investigated by using a semi-continuous flow, completely mixed reactor. The experiments were conducted under mesophilic (35°C) condition and HRT of 30days to 15days by using three different substrates, CM, OFMSW and a mixture of CM with OFMSW. The influent concentration of total solids was constant at 3%. At a long HRT of 30 days, the methane fermentations was stable for each substrate, and the biogas productions for CM, OFMSM and co-digestion of 90% CM with 100FMSW was 0.27, 0.73 and 0.45m3/kg-VS, respectively. When the HRT was shorten to 15 days, volatile fatty acid (VFA) in the OFMSW reactor gradually accumulated because trace metal was not present, resulting in methane fermentation failure. The increase of CM ratio in the co-digestion solved the VFA accumulation problem because the CM had more Ni and Fe. It was also found that co-digestion with OFMSW could increase the biogas production and degradation efficiency of CM.

  371. 有機性廃棄物からの嫌気性水素発酵に及ぼす有機酸濃度の影響 Peer-reviewed

    河野孝志, 和田克士, 李玉友, 野池達也

    水環境学会誌 28 (2) 87-92 2005/02

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe.28.87  

    ISSN: 0916-8958

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    The Influence of volatile fatty acids on hydrogen fermentation from an organic waste by a mixed microflora was investigated in a batch experiment. The batch reactor with a working volume of 1.0 liter was operated at 35°C and a constant p H (5.5 or 6.5) for each experimental run. Dog food was used as the substrate. The seed microflora was a mixed culture obtained by acclimatizing a thermophilic digested sludge by treating the organic fraction of municipal solids waste using glucose as the substrate. The experiments were conducted by changing the initial concentrations of acetic acid and butyric acid from 0 to 50,000mg·l-1 at the substrate concentrations of TS2% to evaluate the substrate decomposition, gas production and metabolic production under each condition. Hydrogen production potential, gas production rate and hydrogen content in the biogas decreased with the increase in the initial concentration of volatile fatty acid. The inhibition effect at a pH of 5.5 was much stronger than that at a pH of 6.5 for a same fatty acid concentration. It was also found that the inhibition caused by fatty acids depends on not only the concentration, but also the type of fatty acid. Butyric acid exerted a stronger inhibition effect than acetic acid. In addition, it was found that an un-ionized fatty acid is a more powerful inhibitor and that hydrogen fermentation is significantly inhibited at an un-ionized fatty acid concentration higher than 200mg·l-1.

  372. 牛ふん尿の中温高濃度メタン発酵特性 Peer-reviewed

    桜井邦宣, 李玉友, 野池達也

    廃棄物学会論文誌 16 (1) 65-73 2005/01

    Publisher: Japan Society of Material Cycles and Waste Management

    DOI: 10.3985/jswme.16.65  

    ISSN: 1883-1648

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    Characteristics of mesophilic methane fermentation of cow manure were investigated using a completely-mixed reactor. The experiment was conducted at a temperature of 35°C and a constant influent TS level of 10% at hydraulic retention times (HRT) from 7.5 days to 30 days. The substrate was fed 2 to 8 times a day using a timer-controlled pump. The removal efficiencies of total CODCr were in the range of 25-45%, and 1 kg of influent TS produced 0.18-0.32m3 of digestion gas and 0.11-0.20m3 of methane gas. The first-order reaction was found suitable for describing the degradation rate of the organic matter in terms of VS, COD and carbohydrates.

  373. Full-scale application of anaerobic digestion process with partial ozonation of digested sludge Peer-reviewed

    H Yasui, K Komatsu, R Goel, YY Li, T Noike

    WATER SCIENCE AND TECHNOLOGY 52 (1-2) 245-252 2005

    ISSN: 0273-1223

  374. Continuous hydrogen production from organic waste Peer-reviewed

    T Noike, IB Ko, S Yokoyama, Y Kohno, YY Li

    WATER SCIENCE AND TECHNOLOGY 52 (1-2) 145-151 2005

    ISSN: 0273-1223

  375. Effect of substrate concentration and pH on hydrogen fermentation of mixed substrate by microflora Peer-reviewed

    T. Kawano, K. Wada, Y. Y. Li, T. Noike

    The Proceedings of the 2nd International Workshop on Innovative Anaerobic Technology 14-17 2004/12

  376. Influence of substrate concentration on the bio-hydrogen production in membrance bioreactor Peer-reviewed

    D. Y. Lee, Y. Y. Li, T. Noike

    The Proceedings of the 2nd International Workshop on Innovative Anaerobic Technology 97-100 2004/12

  377. 下水処理余剰汚泥の嫌気性消化に及ぼす高分子凝集剤の影響 Peer-reviewed

    坂本勝, 室谷憲男, 李玉友, 野池達也

    環境技術 33 (8) 631-638 2004/08

    Publisher: Society of Environmental Conservation Engineering

    DOI: 10.5956/jriet.33.631  

    ISSN: 0388-9459

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    The influence of cationic polymer coagulant on anaerobic digestion (AD) of thickened excess activated sludge was examined by the batch experiments. The polymer addition rate of 1% or less of TS to the sludge did not affect the AD. The anaerobic digester at the actual sewage treatment plant has a retention time of as long as 30 days, therefore it is considered that anaerobes are acclimatized to the polymer, so that the polymer added to the activated sludge during the thickening does not influence the AD. However, the polymer addition rate of 3% or more to TS of the sludge inhibited to the AD, and the total gas production per unit weight input VS was decreased of 31% in the control at the polymer addition rate of 50%. The polymer with a higher cationic degree significantly inhibited the AD at the same polymer addition rate. It was found that the inhibition was not caused by the coagulation state or the viscosity of the sludge, but by the cationic disinfecting action to anaerobes through the experiment on the higher polymer addition.

  378. 複合基質からの嫌気性水素発酵に及ぼす基質濃度とpHの影響 Peer-reviewed

    河野孝志, 和田克士, 李玉友, 野池達也

    水環境学会誌 27 (7) 473-479 2004/07

    DOI: 10.2965/jswe.27.473  

  379. 二相循環式メタン発酵プロセスによる食品加工廃棄物の無希釈処理 Peer-reviewed

    水野修, 李玉友, 奥野芳男, 関廣二, 一瀬正秋

    環境工学研究論文集 41 9-17 2004/04

    DOI: 10.11532/proes1992.41.9  

  380. 黄河河口部における水環境の現況(I)高度浄水の可能性 Peer-reviewed

    杜茂安, 高橋幸彦, 馬俊徳, 李玉友, 野池達也, 中村玄正

    工業用水 (555) 55-65 2004/04

  381. 黄河河口部における水環境の現況(Ⅱ)浄水処理の可能性 Peer-reviewed

    杜茂安, 高橋幸彦, 馬俊徳, 李玉友, 野池達也, 中村玄正

    工業用水 (555) 44-54 2004/04

  382. 黄河河口部における水環境の現況(I)平原貯水池の水質特性 Peer-reviewed

    杜茂安, 高橋幸彦, 馬俊徳, 李玉友, 野池達也, 中村玄正

    工業用水 (555) 31-43 2004/04

  383. Comparison of ammonia inhibition between the meshophilic and thermophilic anaerobic digestion of municipal solid wastes Peer-reviewed

    Y.Y. Li, I.B. Ko, T. Noike, K. Funaishi, H. Sasaki

    The Proceedings of 10th World Congress on Anaerobic Digestion 1 507-514 2004/04

  384. Continuous hydrogen production from organic wastes Peer-reviewed

    T. Noike, I. B. Ko, S. Yokoyama, Y. Kohno, Y. Y. Li

    The Proceedings of 10th World Congress on Anaerobic Digestion 2 856-861 2004/04

  385. Full-scale application of anaerobic digestion process with partial ozonation of digested sludge Peer-reviewed

    H. Yasui, K. Komatsu, R. Goel, Y. Y. Li, T. Noike

    The Proceedings of 10th World Congress on Anaerobic Digestion 2 636-641 2004/04

  386. Influence of HRT and substrate concentration on the continuous hydrogen production by anaerobic microflora Peer-reviewed

    I.B. Ko, Y. Y. Li, H. Satoh, T. Noike

    The Proceedings of 10th World Congress on Anaerobic Digestion 4 2242-2245 2004/04

  387. A new three-phase methane fermentation system for treating food wastes Peer-reviewed

    M. Sakamoto, M. Suzuki, Y. Y. Li, T. Noike

    The Proceedings of 10th World Congress on Anaerobic Digestion 3 1691-1693 2004/04

  388. 高濃度共発酵法を用いた油脂のメタン化技術 Peer-reviewed

    李玉友, 山下耕司, 水野修, 佐々木宏, 関廣二

    環境技術 32 (8) 635-640 2003/08

    Publisher: Society of Environmental Conservation Engineering

    DOI: 10.5956/jriet.32.635  

    ISSN: 0388-9459

  389. 高濃度混合メタン発酵法による油脂廃棄物のメタン化処理 Peer-reviewed

    李玉友, 佐々木宏, 関廣二

    用水と廃水 45 (5) 10-16 2003/05

  390. 生ごみと汚泥の高濃度混合メタン発酵に及ぼす汚泥比率と発酵温度の影響 Peer-reviewed

    奥野芳男, 李玉友, 佐々木宏, 関廣二, 上垣内郁夫

    土木学会論文集 734 75-84 2003/04

    DOI: 10.2208/jscej.2003.734_75  

  391. 二相循環方式高濃度メタン発酵プロセスを用いた生ごみの高速メタン化処理 Peer-reviewed

    李玉友, 水野修, 舩石圭介, 山下耕司

    環境工学研究論文集 40 321-331 2003/04

    DOI: 10.11532/proes1992.40.321  

  392. 高濃度易分解性廃水の水素発酵における塩分と硫酸塩の影響 Peer-reviewed

    浅野憲哉, 松本明人, 李玉友, 野池達也

    工業用水 542 22-31 2003/04

  393. 生ごみと汚泥を混合処理する高温高濃度メタン発酵における汚泥比率の影響 Peer-reviewed

    奥野芳男, 李玉友, 佐々木宏, 関廣二, 上垣内郁夫

    廃棄物学会論文集 14 (1) 461-469 2003/01

    Publisher: Japan Society of Material Cycles and Waste Management

    DOI: 10.3985/jswme.14.27  

    ISSN: 1883-1648

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    The influence of the sludge ratio on the high-solids thermophilic methane fermentation of the organic fraction of municipal solid waste (MSW) and bio-sludge was investigated by using a semicontinuous flow completely mixed reactor. The methane fermentation experiments were conducted at a constant influent total solid (TS) concentration of 12-13% and a constant retention time of 15 days by altering the sludge ratio from 0% to 50% under thermophilic condition (55°C) . As the sludge ratio in the influent TS increased from 0% to 50%, the degradation efficiency of volatile solid decreased from 78% to 49%, while the biogas production yield decreased from 0.8 to 0.5 L/g-VS. For maintaining high rate stable methane fermentation, addition of minerals to the feed was necessary for the MSW-rich cases when the sludge ratio in the influent TS was lower than 10%, while successful operation was possible without mineral addition when the sludge ratio was higher than 25%. The energy production in an integrated biogas system of thermophilic methane fermentation and power generation using biogas was calculated based on the experimental results obtained from this study.

  394. Renewable energy production from organic wastes by high-solid methane fermentation Peer-reviewed

    YY Li, M Osamu, F Kesuke

    ENERGY & ENVIRONMENT - A WORLD OF CHALLENGES AND OPPORTUNITIES, PROCEEDINGS 875-880 2003

  395. The characteristics of continuous hydrogen fermentation with membrane bioreactor Peer-reviewed

    DY Lee, YY Li, T Noike

    ENERGY & ENVIRONMENT - A WORLD OF CHALLENGES AND OPPORTUNITIES, PROCEEDINGS 259-264 2003

  396. High-rate methane fermentation of lipid-rich food wastes by a high-solids co-digestion process Peer-reviewed

    YY Li, H Sasaki, K Yamashita, K Seki, Kamigochi, I

    WATER SCIENCE AND TECHNOLOGY 45 (12) 143-150 2002

    ISSN: 0273-1223

  397. UASB法を用いたPEG廃水の高速処理 Peer-reviewed

    松尾幸彦, 李玉友, 関廣二, 上垣内郁夫

    用水と廃水 43 (12) 32-38 2001/12

  398. 生ごみとし尿汚泥の高濃度メタン発酵に及ぼす滞留時間と発酵温度の影響 Peer-reviewed

    奥野芳男, 李玉友, 佐々木宏, 関廣二, 上垣内郁夫

    環境工学研究論文集 38 141-150 2001/04

    DOI: 10.11532/proes1992.38.141  

  399. Integrated Methane Fermentation of High-Fat Content Food Wastes by High-Solids Co-digestion Peer-reviewed

    Y.Y.Li, H. Sasaki, K. Yamashita, K. Seki, I. Kamigochi

    Proceedings of Fifth International Symposium on Waste Management Problems in Agro-Industries 65-72 2001/04

  400. DMF排水の活性汚泥処理と窒素除去 Peer-reviewed

    舩石圭介, 宮前博子, 李玉友

    用水と廃水 45 (3) 24-32 2001/03

  401. High-Solids Thermophilic Methane Fermentation of the Organic Fraction of MSW Peer-reviewed

    Y. Y. Li, H. Sasaki, K. Seki, Y. Kamigochi

    Proceedings of the 5th Internatioinal Symposium on Environmental Biotechnology 2000/04

  402. 生ごみの高温・高濃度メタン発酵に及ぼす滞留時間と負荷の影響 Peer-reviewed

    佐々木宏, 李玉友, 関廣二, 上垣内郁夫

    水環境学会誌 22 (12) 983-989 1999/12

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe.22.983  

    ISSN: 0916-8958

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    Effects of the hydraulic retention time (HRT) and loading rate on thermophilic methane fermentation of the organic fraction of municipal solid waste (OFMSW) were investigated by using a semi-continuous flow completely-mixed reactor. The experiment was conducted at a temperature of 55 °C and a constant influent TS level of 10% by changing the HRT from 5 days to 30days. The results indicate that the HRT of thermophilic digester could be shortened to 5 days without significant decrease in both the organic matter degradation and methane production, and that the digester was successfully operated at the high loading rate up to 31 kg-CODCr·m-3·d-1. The removal efficiencies of TS, VS and total CODCr were, respectively, in the ranges of 73-78%, 76-78%, and 72-75%, and 1 kg of influent TS produced about 0.75 m3 of digestion gas with the methane content of 57-59%. The Stoichiometric formula of the methane fermentation of OFMSW was identified as: C17H29O10N + 6.5H2O → 9.25CH4 + 6.75CO2 + NH4+ + HCO3-, which is in accordance with the experimental results of this study. The first-order reaction was found suitable for describing the degradation of the OFMSW, and kinetic constants for TS, VS and total CODCr were summarized in a table. It is suggested that the applicable HRT for the high-solids digestion of OFMSW could be shortened to at least of 7.5 days, corresponding to the CODCr loading rate of 20 kg-CODCr·m-3·d-1, by adding mineral nutrient to the feed. In addition, the relationships between HRT and various operation parameters were determined quantitatively based on the experimental results.

  403. 生ごみの高濃度消化における中温と高温処理の比較 Peer-reviewed

    李玉友, 佐々木宏, 鳥居久倫, 奥野芳男, 関廣二, 上垣内郁夫

    環境工学研究論文集 36 413-421 1999/04

    DOI: 10.11532/proes1992.36.413  

  404. Developments of bacterial population and methanogenic activity in a laboratory-scale landfill bioreactor Invited Peer-reviewed

    JY Lay, YY Li, T Noike

    WATER RESEARCH 32 (12) 3673-3679 1998/12

    DOI: 10.1016/S0043-1354(98)00137-7  

    ISSN: 0043-1354

  405. 生ごみ・し尿汚泥の高効率メタン発酵技術に関する基礎的検討 Peer-reviewed

    李玉友, 佐々木宏, 奥野芳男, 関廣二, 上垣内郁夫

    環境技術 27 (12) 213-220 1998/12

  406. Mathematical model for methane production from landfill bioreactor Peer-reviewed

    JJ Lay, YY Li, T Noike

    JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE 124 (8) 730-736 1998/08

    ISSN: 0733-9372

  407. 高温高濃度嫌気性消化における下水汚泥の分解特性 Peer-reviewed

    清原雄康, 水野修, 宮原高志, 野池達也, 李玉友

    土木学会論文集 (552) 35-43 1998/04

    DOI: 10.2208/jscej.1998.601_35  

  408. 生ごみの高温メタン発酵に及ぼす投入濃度の影響 Peer-reviewed

    李玉友, 佐々木宏, 奥野芳男, 関廣二, 上垣内郁夫

    環境工学研究論文集 35 213-220 1998/04

    DOI: 10.11532/proes1992.35.29  

  409. The behavior of sulfate-reducing bacteria in acidogenic phase of anaerobic digestion Peer-reviewed

    O. Mizuno, Y. Y. Li, T. Noike

    Water Research 32 (5) 1626-1634 1998/03/01

    Publisher: Elsevier Sci Ltd

    DOI: 10.1016/S0043-1354(97)00372-2  

    ISSN: 0043-1354

  410. Dynamics of methanogenic activities in a landfill bioreactor treating the organic fraction of municipal solid wastes Peer-reviewed

    JJ Lay, YY Li, T Noike

    WATER SCIENCE AND TECHNOLOGY 38 (2) 177-184 1998

    DOI: 10.1016/S0273-1223(98)00479-X  

    ISSN: 0273-1223

  411. The influence of pH and ammonia concentration on the methane production in high-solids digestion processes Peer-reviewed

    Jiunn-Jyi Lay, Yu-You Li, Tatsuya Noike

    Water Environment Research 70 (5) 1075-1082 1998

    Publisher: Water Environment Federation

    DOI: 10.2175/106143098X123426  

    ISSN: 1061-4303

  412. Interaction between homoacetogens and methanogens in lake sediments Peer-reviewed

    JJ Lay, YY Li, T Noike

    JOURNAL OF FERMENTATION AND BIOENGINEERING 86 (5) 467-471 1998

    DOI: 10.1016/S0922-338X(98)80153-0  

    ISSN: 0922-338X

  413. Influences of pH and moisture content on the methane production in high-solids sludge digestion Peer-reviewed

    JJ Lay, YY Li, T Noike

    WATER RESEARCH 31 (6) 1518-1524 1997/06

    DOI: 10.1016/S0043-1354(96)00413-7  

    ISSN: 0043-1354

  414. 中温および高温メタン発酵に及ぼす高級脂肪酸の阻害効果の比較 Peer-reviewed

    チュウ春鳳, 李玉友, 宮原高志, 野池達也

    土木学会論文集 1997 (559) 31-38 1997/04

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscej.1997.559_31  

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    The inhibitory effects of long-chain fatty acids (LFAs) on methane fermentation from acetate under mesophilic(35&deg;C) and thermophilic(55&deg;C) conditions were investigated using batch anaerobic toxicity assays, Nine LFAs, including capric C10:0, lauric C12:0, myristic C14:0, palmitoleic C16:0, stearic C18:0, oleic C18:1 (cis), elaidic C18:1 (trans), linoleic C18:2, linolenic C18:3 were used as the inhibitors. The inhibitory effect caused by LFAs under the thermophilic conditions were less than that under the mesophlic conditions and the unsaturated LFAs had higher inhibitory effect than saturated LFAs at the same temperatures. It was found that the inhibition caused by LFAs were correlated with the chemical structure and hydrophobicity of LFAs.

  415. Analysis of the Environmental Factors Affecting Methane Production from High-Solids Organic Waste Peer-reviewed

    J. J. Lay, Y.Y. Li, T. Noike, J. Endo, S. Ishimoto

    Proceedings of The 8th International Conference on Anaerobic Digestion 1 332-339 1997/04

  416. Ecological analysis of the bacterial system in a full-scale egg-shaoed digester treating sewage sludge Peer-reviewed

    Y.Y. Li, O. Mizuno, T. Miyahara, T. Noike, K. Katsumata

    Proceedings of The 8th International Conference on Anaerobic Digestion 2 247-254 1997/04

  417. Analysis of environmental factors affecting methane production from high-solids organic waste Peer-reviewed

    JJ Lay, YY Li, T Noike, J Endo, S Ishimoto

    WATER SCIENCE AND TECHNOLOGY 36 (6-7) 493-500 1997

    DOI: 10.1016/S0273-1223(97)00560-X  

    ISSN: 0273-1223

  418. Ecological analysis of the bacterial system in a full-scale egg-shaped digester treating sewage sludge Peer-reviewed

    YY Li, O Mizuno, T Miyahara, T Noike, K Katsumata

    WATER SCIENCE AND TECHNOLOGY 36 (6-7) 471-478 1997

    DOI: 10.1016/S0273-1223(97)00557-X  

    ISSN: 0273-1223

  419. Interactions between methanogenic, sulfate-reducing and syntrophic acetogenic bacteria in the anaerobic degradation of benzoate Peer-reviewed

    YY Li, S Lam, HHP Fang

    WATER RESEARCH 30 (7) 1555-1562 1996/07

    DOI: 10.1016/0043-1354(95)00316-9  

    ISSN: 0043-1354

  420. Degradation of phenol in wastewater in an upflow anaerobic sludge blanket reactor Peer-reviewed

    HHP Fang, T Chen, YY Li, HK Chui

    WATER RESEARCH 30 (6) 1353-1360 1996/06

    DOI: 10.1016/0043-1354(95)00309-6  

    ISSN: 0043-1354

  421. 嫌気性酸生成相における硫酸塩還元および物質分解特性に及ぼすCOD/S比の影響 Peer-reviewed

    水野修, 李玉友, 野池達也

    土木学会論文集 1996 (552) 33-41 1996/04

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscej.1996.552_33  

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    The effects of COD/S ratio and HRT on sulfate reduction and the characteristics of sucrose degradation in acidogenic phase were investigated by using continuous anaerobic chemostat reactor at 35&deg;C. Sulfate reduction occurred in acidogenic phase even at HRT of 2h and influent sulfate was effectively removed at HRT of 6 to 10h. Sucrose degradation was not inhibited although total sulfide and free-H2S increased up to 187mg&middot;1-1, 99mgS&middot;1-1, respectively. The metabolites, especially H2, ethanol and lactate production in acidogenesis were significantly influenced by COD/S ratio.

  422. Methane Production Potential and Biodegradation Characteristics of Municipal Solid Wastes Peer-reviewed

    J.J. Lay, Y.Y. Li, T. Noike

    Journal of Environmental System and Engineering (552) 101-108 1996/04

  423. Performance analysis of the full-scale egg-shaped digester in treating sewage sludge of high concentration Peer-reviewed

    YY Li, T Noike, K Katsumata, H Koubayashi

    WATER SCIENCE AND TECHNOLOGY 34 (3-4) 483-491 1996

    DOI: 10.1016/0273-1223(96)00615-4  

    ISSN: 0273-1223

  424. スクロースの酸発酵に及ぼす硫酸塩還元の影響 Peer-reviewed

    水野修, 李玉友, 野池達也

    水環境学会誌 18 (11) 894-900 1995/11

    DOI: 10.2965/jswe.18.894  

  425. UASB TREATMENT OF WASTE-WATER CONTAINING CONCENTRATED BENZOATE Peer-reviewed

    YY LI, HHP FANG, T CHEN, HK CHUI

    JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE 121 (10) 748-751 1995/10

    DOI: 10.1061/(ASCE)0733-9372(1995)121:10(748)  

    ISSN: 0733-9372

  426. Anaerobic Degradation of Butyrate in Wastewater Peer-reviewed

    H.H.P. Fang, Y.Y. Li, H.K. Chui

    Bioresource Technology 16 75-81 1995/04

    DOI: 10.1016/0960-8524(94)00092-F  

  427. 嫌気性水素発酵法による有機排水の処理特性 Peer-reviewed

    沈建権, 李玉友, 野池達也

    環境工学研究論文集 32 213-220 1995/04

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/proes1992.32.213  

    ISSN: 1341-5115

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    Hydrogen fennentation and COD removal from a wastewater with concentrated sucrose were investigated using a special consortium of anaerobic bacteria in chemostat-type reactors at 35°C. The experiment was conducted by varying the hydraulic retention time (HRT) of the reactor from 3.0 to 24.0 hours in 7 steps. When the HRT was longer than 6.0 hours, over 99% of the influent substrate was degraded and the COD removal reached to 32-35%. As a result, the influent COD (100%) were converted into various forms, including hydrogen (10.7-13.2%), acetate (11.7-12.9%), butyrate (40.3-48.5%) and biomass (14.5-21.8%). The biogas produced was mainly composed of hydrogen (40%) and carbon dioxide (60%), and the concentrations of acetate and butyrate in effluent reached to 1500mg/l and 3300 mg/l, respectively. The Monod equation was suitable to describe the relationship between the substrate concentration and the substrate utilization rate for the hydrogen-producing consortium, and all the kinetic parameters were determined. The following stoichiometric equation was obtained for the hydrogen fennentation reaction at the HRT of 8.0 hours: surose→ 3.18H2+ 4.68CO2+ 0.72acetate+1.17butyrate +0.39bacterial cells (C5H9O3N).

  428. Effect of degradation kinetics on the Microstructure of Anaerobic Biogranules Peer-reviewed

    H.H.P. Fang, H.K. Chui, Y.Y. Li

    Proceeding of the Biofilm Structure, Growth and Dynamics Workshop, IAWQ 179-186 1995/04

  429. Progress of Anaerobic Processes in Treating Industry Wastewaters in Japan Peer-reviewed

    T. Aoi, Y. Y. Li, T. Suzuki

    Proceedings of Post Conference Seminar of 3rd Internatuinal Specialised Conference on Design and Operation of Small Wastewater Treatment Plants 61-70 1995/04

  430. PERFORMANCE AND SLUDGE CHARACTERISTICS OF UASB PROCESS TREATING PROPIONATE-RICH WASTE-WATER Peer-reviewed

    HHP FANG, YY LI, HK CHUI

    WATER RESEARCH 29 (3) 895-898 1995/03

    DOI: 10.1016/0043-1354(94)00203-J  

    ISSN: 0043-1354

  431. UASB TREATMENT OF WASTE-WATER WITH CONCENTRATED MIXED VFA Peer-reviewed

    HHP FANG, YY LI, HK CHUI

    JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE 121 (2) 153-160 1995/02

    DOI: 10.1061/(ASCE)0733-9372(1995)121:2(153)  

    ISSN: 0733-9372

  432. MICROSTRUCTURAL ANALYSIS OF UASB GRANULES TREATING BREWERY WASTE-WATER Peer-reviewed

    HHP FANG, HK CHUI, YY LI

    WATER SCIENCE AND TECHNOLOGY 31 (9) 129-135 1995

    DOI: 10.1016/0273-1223(95)00414-I  

    ISSN: 0273-1223

  433. Effect of degradation kinetics on the microstructure of anaerobic biogranules Peer-reviewed

    HHP Fang, HK Chui, YY Li

    WATER SCIENCE AND TECHNOLOGY 32 (8) 165-172 1995

    DOI: 10.1016/0273-1223(96)00021-2  

    ISSN: 0273-1223

  434. 酢酸資化性メタン生成に対する芳香族化合物の阻害影響、水環境学会誌 Peer-reviewed

    張 岩, 李玉友, 野池達也

    水環境学会誌 17 (12) 57-61 1994/12

    DOI: 10.2965/jswe.17.815  

  435. 好気性生物膜によるPVAを有機炭素源とした脱窒に関する研究 Peer-reviewed

    方斗連, 李玉友, 野池達也, 渡辺義公

    環境工学研究論文集 31 (31) 199-208 1994/04

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/proes1992.31.199  

    ISSN: 1341-5115

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    Performance of a denitrification process using polyvinyl alcohol (PVA) as a organic carbon source was investigated by anoxic and aerobic RBC systems at 25°C and 30°C. PVA was well degraded under aerobic condition, but not under anoxic condition. In the experiment using phenol as a co-organic substrate for PVA degradation, the efficiency of denitrification increased from 38% to 84% as the TOC loading rate increased from 1g/m2.d to 4.2g/m2.d, while PVA-removal and nitrification efficiencies were above 90% throughout all the experiments. In the experiment using PVA as the sole organic carbon source, the efficiencies of PVA removal and nitrification increased with increasing HRT, and reached levels of 95%, and 99%, respectively at an HRT of 10 hours, whereas the efficiency of denitrification reached its maximum value of 78% at an HRT of 8 hours. These results indicated that PVA could be used as a sole electron donor for denitrification and that the optimum HRT for the simultaneous removal of PVA and nitrogen was between 8 and 10 hours. The PVA-decomposing bacteria, nitrifiers, and denitrifiers co-existed in the biofilm, but the populations of PVA-decomposing bacteria and denitrifiers in the surface layer were 1 to 2 orders of magnitude higher than those in middle and bottom layers indicating that the surface layer had a higher denitrifying activity.

  436. Recent Developments in Microbiology and Biochemistry of Homoacetogens and Syntrophic Acetogens Peer-reviewed

    Y.Y. Li, H.H.P. Fang, T. Noike

    Proceeding of the 7th International Symposium on Anaerobic Digestion 54-57 1994/04

  437. Degradation of Starch Particulates in a UASB Reactor Peer-reviewed

    T.S. Kwong, H.H.P. Fang, Y.Y. Li

    Proceedings of the International Conference on Water and Wastewater Treatment (CCES) 418-426 1994/04

  438. アミノ酸系排水の嫌気性ろ床および嫌気性ハイブリッドリアクター処理における性能比較 Peer-reviewed

    沈振環, 周暁倹, 李玉友, 野池達也

    水環境学会誌 17 (2) 99-108 1994/02

    DOI: 10.2965/jswe.17.99  

  439. EFFECTS OF SULFATE CONCENTRATION AND SLUDGE RETENTION TIME ON THE INTERACTION BETWEEN METHANE PRODUCTION AND SULFATE REDUCTION FOR BUTYRATE Peer-reviewed

    O MIZUNO, YY LI, T NOIKE

    WATER SCIENCE AND TECHNOLOGY 30 (8) 45-54 1994

    ISSN: 0273-1223

  440. PERFORMANCE AND GRANULE CHARACTERISTICS OF UASB PROCESS TREATING WASTE-WATER WITH HYDROLYZED PROTEINS Peer-reviewed

    HHP FANG, HK CHUI, YY LI, T CHEN

    WATER SCIENCE AND TECHNOLOGY 30 (8) 55-63 1994

    ISSN: 0273-1223

  441. Removal of formate from wastewater by anaerobic process Peer-reviewed

    Ho Kwong Chui, Herbert H. P. Fang, Yu You Li

    Journal of Environmental Engineering (United States) 120 (5) 1308-1320 1994

    DOI: 10.1061/(ASCE)0733-9372(1994)120:5(1308)  

    ISSN: 0733-9372

  442. MICROBIAL STRUCTURE AND ACTIVITY OF UASB GRANULES TREATING DIFFERENT WASTEWATERS Peer-reviewed

    HHP FANG, HK CHUI, YY LI

    WATER SCIENCE AND TECHNOLOGY 30 (12) 87-96 1994

    ISSN: 0273-1223

  443. 低温域における嫌気性酸発酵の動力学的特性に及ぼす温度の影響 Peer-reviewed

    車基チョル, 李玉友, 野池達也

    土木学会論文集 1993 (461) 67-73 1993/05

    Publisher: Japan Society of Civil Engineers

    DOI: 10.2208/jscej.1993.461_67  

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    The effect of temperature on the kinetic characteristics of acidogenesis in anaerobic digestion was investigated using anaerobic chemostat-type reactor to which soluble starch was fed as a substrate. The digestion temperature ranged from 15&deg;C to 30&deg;C. It became clear that the relationship between the substrate concentration and specific substrate utilization rate at same temperature is suitably expressed by the Contois kinetic model. The maximum specific substrate utilization rate (&nu;max) increased, as the temperature increased, while the saturation constant (&kappa;s&nu;) and the growth yield (Y) decreased. The temperature characteristics of the kinetic constants are expressed using exponential equations. The extent of temperature dependence of the kinetic constants decrease in the order of &nu;max>Y>&kappa;s&nu;. The simulation model to express the temperature characteristics of the acidogenesis is obtained in the temperature range from 20&deg;C to 30&deg;C.

  444. Effect of Substrate on the UASB Process Peer-reviewed

    H.H.P. Fang, Y.Y. Li, H.K. Chui

    Proceedings of World Congress III on Engineering and Environment 1 190-197 1993/04

  445. Effect of Phenolic Compounds on Methanogenesis in Anaerobic Digestion Peer-reviewed

    Y. Zhang, Y.Y. Li, T. Noike

    Proceedings of World Congress III on Engineering and Environment 1 139-146 1993/04

  446. 酪酸の嫌気的分解に及ぼす硫酸塩濃度およびCOD/S比の影響 Peer-reviewed

    水野修, 李玉友, 野池達也

    水環境学会誌 16 (2) 99-109 1993/02

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe.16.99  

    ISSN: 0916-8958

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    Effects of sulfate concentration and COD/S ratio on the methane production and sulfate reduction in the anaerobic degradation of butyric acid were investigated by using an anaerobic chemostat-type reactor at 35°C. The sulfate concentration and COD/S ratio were changed in the ranges of 68 to 1667 mg·l-1 and 1.5 to 148, respectively. In order to study the competition between the methane producing bacteria (MPB) and sulfate-reducing bacteria (SRB), the COD mass balance, electron flow, sulfur balance and trophic-groups bacterial populations under the different conditions were analyzed quantitatively.<br>The competition between MPB and SRB was evidently influenced by COD/S ratio. When COD/S ratio was 6.0 or more, the methane production was the main reaction. On the other hand, 67% of the total electron flow was utilized by SRB when COD/S ratio was 1.5. The path way of butyrate degradation and the microflora in the reactor were also affected by COD/S ratio. The numbers of acetate-consuming and H2-consuming MPB decreased from 106 to 104 MPN·ml-1 and 106 to 101 MPN·ml-1, respectively, as COD/S ratio decreased from 148 to 1.5. In the reactor in which a small amount of sulfate was added to the substrate, the numbers of butyrate-consuming and acetate-consuming SRB were enumerated as high as 107 to 108 MPN·ml-1. It is suggested that in sulfate-depleted environment, the butyrate-consuming SRB play an important role in producing H2 and acetate from butyrate, as well as the acetogenic bacteria.

  447. 低温域における酸発酵特性に及ぼす温度とHRTの影響 Peer-reviewed

    車基チョル, 李玉友, 野池達也

    衛生工学研究論文集 28 29-37 1992/11

    Publisher: Japan Society of Civil Engineers

    DOI: 10.11532/proes1983.28.29  

    ISSN: 0913-4069

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    Effect of temperature and hydraulic retention time (HRT) on the characteristics of acidogenesis in anaerobic digestion were investigated using anaerobic chemostat-type reactor, which soluble starch was fed as a substrate.<BR>The HRTs were 0.25d, 0.5d, 1.0d and 2.0d. The experimental temperature was changed in the rangefrom 10°C to 30°C. The degradation efficiency of the substrate and the composition of volatile fatty acids (VFA) produced in anaerobic acidogenesis were significantly affected by the temperature and HRT. The necessary HRT for obtaining the high degradation efficiency of 95% at the temperature ranges of 20°Cto 30°C and 10°C to 20°C were 1.0d and 2.0d, respectively. At the condition that the temperature ranged from 20°C to 25°C and the HRT rangedfrom 1.0d to 2.0d, the COD yields of various products to the influent substrate in the reactors ranged in the following percentage; VSS: 20 to 22%, VFA: 41 to 54%, Others: 9 to 30%, H2: 6 to 12% and CH4: 0.4 to 0.8%. The effects of temperature and HRT on the distribution of acidogenc bacteria, homoacetogenic bacteria, acetate-consuming methanogenic bacteria and H2-consuming methanogenic bacteria were studied by enumerating the bacterial population levels. From this investigation, it was elucidated that the complete phase separation of acidogenesis and methanogenesis was possible by conducting the acidogenesis below the temperature of 25°C.

  448. ANAMET嫌気性―好気性活性汚泥法プロセスによるアルコール廃液の処理に関するパイロットプラント研究 Peer-reviewed

    沈振環, 周暁倹, 李玉友, 野池達也

    水環境学会誌 15 (4) 266-275 1992/04

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe.15.266  

    ISSN: 0916-8958

    More details Close

    The performance of the ANAMET anaerobic-aerobic system for treating the alcohol stillage wastewater was investigated by conducting pilot plantscale experiments. The ANAMET system is combined with a thermophilic anaerobic contact process and a conventional activated sludge process.<br>In the anaerobic contact process unit, BOD removal efficiency of 87% and COD removal efficiencies ranging from 82 to 83% were obtained under the following operational conditions : the temperature ranged from 53 to 55°C, the HRT ranged from 4 to 5 days and the COD loading rate ranged from 9.11 to 11.7 kg-COD·m-3·d-1. The optimum ranges of influent COD concentration, COD loading rate and sludge age in the aerobic activated sludge process unit were 2,000-3,000mg·l-1, 0.55-1.10kg-COD·m-3·d-1 and 8-15days, respectively. Through this investigation, it was found that the ANAMET anaerobic-aerobic system provided efficient performance in the methane production, the improvement of effluent water qaulity and the decrease of sludge production. This anaerobic-aerobic combination system is considered to be suitable for the treatment of wastewater with high concentration of solids.

  449. UPGRADING OF ANAEROBIC-DIGESTION OF WASTE ACTIVATED-SLUDGE BY THERMAL PRETREATMENT Peer-reviewed

    YY LI, T NOIKE

    WATER SCIENCE AND TECHNOLOGY 26 (3-4) 857-866 1992

    ISSN: 0273-1223

  450. The Degradation Characteristics of Waste Activated Sludge and Cellulose in Anaerobic Digestion of Sewage Sludge Peer-reviewed

    Y.Y.Li, T.Noike

    Water Pollution Control in Asia 3 370-375 1991/11

  451. 汚泥の嫌気性消化における細菌群の分布と物質分解特性―メタン生成菌とホモ酢酸生成細菌を中心として― Peer-reviewed

    李玉友, 野池達也

    水質汚濁研究 12 (12) 771-780 1989/12

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe1978.12.771  

    ISSN: 0387-2025

    More details Close

    Effects of retention time on the characteristics of bacterial population and organic matter degradation in anaerobic digestion were investigated by using laboratory-scale chemostat-type reactors at 35°C. The heat pretreated waste activated sludge (175°C) was used as a substrate. <BR>At the retention time of 5 days, the following high treatment efficiencies were obtained : COD removal efficiency : 59%, methane gas recovery efficiency : 42.5%, and VSS remaining efficiency : 30%. According to the measurement by the most probable numbers method, the numbers of various groups of methanogenic bacteria in the digesters at the retention times of 1.5 to 10 days were enumerated in the following ranges : total methanogens : 1.9×107 to 2.3×108MPN·ml-1, H2 degraders : 3.1×106 to 2.8×107MPN·ml-1, acetate degraders : 8.2×106 to 1.1×107MPN·ml-1, methanol degraders : 2.3×106 to 1.3×107MPN·ml-1, and formate degraders : 3.3×105 to 2.3×107MPN·ml-1. The number of homoacetogenic bacteria was ranged from 2.6×106 to 3.3×107MPN·ml-1. It is observed that the bacterial populations were changed with the retention time. <BR>The measurement methods of methanogenic bacteria and the roles of homoacetogenic bacteria in anaerobic digestion were also discussed.

  452. 余剰汚泥の嫌気性消化に及ぼす前熱処理および滞留時間の影響 Peer-reviewed

    李玉友, 野池達也

    水質汚濁研究 12 (2) 112-121 1989/02

    DOI: 10.2965/jswe1978.12.112  

  453. 嫌気性消化の酸生成相における余剰汚泥の分解特性 Peer-reviewed

    李玉友, 野池達也

    水質汚濁研究 10 (12) 729-740 1987/12

    Publisher: Japan Society on Water Environment

    DOI: 10.2965/jswe1978.10.729  

    ISSN: 0387-2025

    More details Close

    The characteristics of the degradation of excess activated sludge in the acidogenic phase were investigated by the laboratory-scale batch and continuous experiments at 35±1°C. The effects of organic loading and digestion period on the production of volatile fatty acids and digester gas were studied by the batch experiments. On the other hand, the continuous experiments were performed using four kinds of excess activated sludges collected at different periods at SRTs of 0.5, 1.5, 3.0 and 5.0 days in order to clarify the behavior of the degradation of excess activated sludge. About 60% of total COD of excess activated sludge was degraded in 130 days by batch experiment. The hydrolysis reaction is the rate-limiting step in overall anaerobic digestion. The hydrolytic rate of degradable materials in excess activated sludge is expressed as a linear equation, and hydrolytic rate constants were : 0.44 0.89 days-1 on the basis of volatile suspended solids (VSS) and 0.32 0.65 days-1 on the basis of COD. The distribution ratios of degradable materials in the excess activated sludge are shown in the following order : lipid> protein> carbohydrate.

Show all ︎Show first 5

Misc. 85

  1. A review of anaerobic granulation under high-salinity conditions: Mechanisms, influencing factors and enhancement strategies

    Chen Shun Lu, Jin Ming Qiu, Yang Yang, Yong Hu, Yu You Li, Takuro Kobayashi, Yong Jun Zhang

    Journal of Water Process Engineering 55 2023/10

    DOI: 10.1016/j.jwpe.2023.104227  

    ISSN: 2214-7144

  2. Research and Activity Trends in Anaerobic Microbial Treatments

    西村文武, 李玉友, 渡利高大, 山口隆司, 小林拓朗, 日高平

    水環境学会誌 46(A) (12) 2023

    ISSN: 0916-8958

  3. A review of anaerobic membrane bioreactors for municipal wastewater treatment with a focus on multicomponent biogas and membrane fouling control

    Yisong Hu, Hui Cheng, Jiayuan Ji, Yu-You Li

    Environmental Science: Water Research and Technology 6 (10) 2641-2663 2020/10/01

    Publisher: Royal Society of Chemistry

    DOI: 10.1039/d0ew00528b  

    ISSN: 2053-1419 2053-1400

  4. パイロットスケール嫌気性MBRによる生活排水の効率的な処理

    王添頡, 孔哲, 呉江, 覃宇, 李玉友

    下水道研究発表会講演集 57th 2020

  5. Anaerobic membrane bioreactor towards biowaste biorefinery and chemical energy harvest: Recent progress, membrane fouling and future perspectives

    Guangyin Zhen, Yang Pan, Xueqin Lu, Yu-You Li, Zhongyi Zhang, Chengxin Niu, Gopalakrishnan Kumar, Takuro Kobayashi, Youcai Zhao, Kaiqin Xu

    RENEWABLE & SUSTAINABLE ENERGY REVIEWS 115 2019/11

    DOI: 10.1016/j.rser.2019.109392  

    ISSN: 1364-0321

    eISSN: 1879-0690

  6. Nutrient recovery technologies integrated with energy recovery by waste biomass anaerobic digestion

    Haiyuan Ma, Yan Guo, Yu Qin, Yu-You Li

    Bioresource Technology 269 520-531 2018/12/01

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.biortech.2018.08.114  

    ISSN: 1873-2976 0960-8524

  7. Research on biogas desulfurization using sulfide-oxidizing bacteria

    69 (4) 47-58 2016/04

    Publisher: 硫酸協会

    ISSN: 0370-8047

  8. 一槽型アナモックスによる窒素除去プロセスの制御方法 (第53回下水道研究発表会講演集)

    紀 佳淵, 劉 媛, 牛 啓桂, 北條 俊昌, 李 玉友

    下水道研究発表会講演集 53 10-12 2016

    Publisher: 日本下水道協会

  9. Study on a High Nitrogen Removal ANAMMOX Process and the Sludge Characteristics

    21 (2) 68-71 2016

    Publisher: 環境システム計測制御学会

    ISSN: 1342-3983

  10. 硫酸塩含有廃水のUASB処理におけるメタン生成古細菌と硫酸塩還元細菌の長期間競合の変化

    呉江, 常玉広, 胡勇, 北條俊昌, 李玉友

    土木学会年次学術講演会講演概要集(CD-ROM) 71st 2016

  11. 食品排水のバイオガス利用の実態と展望

    李玉友

    月刊食品工場長 2015 (9) 22-25 2015/09/01

  12. 嫌気性膜分離(AnMBR)法による有機性廃棄物・排水の髙効率処理の技術開発と応用

    李玉友, 小林拓朗, 若原慎一郎

    用水と廃水 57 (4) 305-315 2015/04/01

    Publisher: 産業用水調査会

    ISSN: 0513-5907

  13. Thermophilic methane fermentation of coffee grounds by AnMBR

    Li Yu-You, Hojyo Toshimasa

    Annual report of the Society for the Promotion of Construction Engineering 49 9-10 2014/04/01

    Publisher: Tohoku University

    ISSN: 0288-9994

  14. Treatment performance of synthetic sewage by submerged anaerobic membrane bioreactor

    Li Yu-You, Hojyo Toshimasa

    Annual report of the Society for the Promotion of Construction Engineering 49 9-10 2014/04/01

    Publisher: Tohoku University

    ISSN: 0288-9994

  15. Effects of Seed Sludge and HRT on Acidogenic Digestion of Primary Sludge

    56 (2) 138-145 2014/02

    Publisher: 産業用水調査会

    ISSN: 0513-5907

  16. 酸素制御を利用した部分的亜硝酸化の実現と維持 (第51回下水道研究発表会講演集)

    劉 媛, 北條 俊昌, 李 玉友

    下水道研究発表会講演集 51 25-27 2014

    Publisher: 日本下水道協会

  17. 嫌気性消化に関する第13回世界大会(13th World Congress on Anaerobic Digestion)参加報告

    小林拓朗, 李玉友

    再生と利用 38 (142) 77-84 2014/01/01

  18. The Treatment Performance of Marinade Wastewater by Submerged Anaerobic Membrane Bioreactor (SAMBR) at Low Loading Rate

    55 (12) 904-911 2013/12

    Publisher: 産業用水調査会

    ISSN: 0513-5907

  19. Current Status and Future Perspective of Sewage Treatment Using Anaerobic Membrane Bioreactor

    55 (12) 889-903 2013/12

    Publisher: 産業用水調査会

    ISSN: 0513-5907

  20. 嫌気性膜分離法による下水処理技術の現況と課題

    渡邉亮哉, 若原慎一郎, 李玉友

    用水と廃水 55 (12) 31-45 2013/12/01

  21. Treatment Performance of Synthetic Municipal Wastewater by Submerged Anaerobic Membrane Bioreactor (SAMBR)

    18 (2) 46-49 2013/10/15

    Publisher: 環境システム計測制御学会

    ISSN: 1342-3983

  22. Bioenergy Conversion of Sewage Sludge by Anaerobic Digestion with Two-Stage and Circulating Process

    18 (2) 66-69 2013/10/15

    Publisher: 環境システム計測制御学会

    ISSN: 1342-3983

  23. 第9回アジア地域嫌気性消化国際会議および下水処理における嫌気性MBRの応用

    李玉友

    再生と利用 37 (141) 54-59 2013/10/01

  24. 巻頭インタビュー:水素・メタン発酵プロセスによる生ごみ等の廃棄物処理

    李玉友

    環境施設 (133) 2-10 2013/09/01

  25. 震災復興の経験から下水道インフラのあり方を考える

    李玉友

    用水と廃水 55 (6) 399-399 2013/06/01

  26. メタン発酵によるバイオディーゼル燃料由来の廃グリセリンの利用

    渡邉亮哉, 多田千佳, 中井 裕, 李玉友

    用水と廃水 55 (3) 47-58 2013/03

  27. メタン発酵によるバイオディーゼル燃料由来の廃グリセリンの利用

    渡邊亮哉, 多田千佳, 中井裕, 李玉友

    用水と廃水 55 (3) 215-226 2013/03/01

  28. Anammoxプロセスに及ぼす亜硝酸とアンモニアの影響 (第50回下水道研究発表会講演集)

    張 彦隆, 牛 啓桂, 李 玉友

    下水道研究発表会講演集 50 13-15 2013

    Publisher: 日本下水道協会

  29. バイオマス技術・環境に関する話題 2)メタン発酵消化液の液肥利用に関する経済的,技術的な側面からの調査検討結果について

    岡原弘明, 岡庭良安, 李玉友, 中村真人, 入江満美

    季刊JARUS (109) 21-30 2012/12/27

  30. 膜型メタン発酵技術

    若原慎一郎, 高橋慎太郎, 李玉友

    環境浄化技術 11 (4) 1-5 2012/04/01

  31. 異なる処理方式の下水処理場における温室効果ガス排出量の季節変動 (第49回下水道研究発表会講演集)

    佐野 慈, 李 玉友, 西村 修

    下水道研究発表会講演集 49 31-33 2012

    Publisher: 日本下水道協会

  32. 下水処理場に由来するメタン・亜酸化窒素の直接排出と間接排出の割合に関する考察 (第49回下水道研究発表会講演集)

    増田 周平, 李 玉友, 西村 修

    下水道研究発表会講演集 49 19-21 2012

    Publisher: 日本下水道協会

  33. 汚水処理施設の被害と復旧状況

    李玉友

    水環境学会誌 34(A) (12) 415-418 2011/12/01

  34. Current situation of household biogas plants in rural area of China

    Journal of water and waste 53 (9) 707-717 2011/09

    Publisher: 産業用水調査会

    ISSN: 0513-5907

  35. 東日本大震災による汚水処理施設の被害と応急対策

    李玉友, 高橋慎太郎, 佐野慈, 増田周平

    40 (7) 436-411 2011/07/01

  36. 萤光原位杂交技术在活性污泥菌群识别中的研究进展

    费学宁, 曹阳, 郝亚超, 池勇志, 李玉友

    74 (6) 520-527 2011/06/01

  37. 下水道汚水処理施設の被災状況

    李玉友, 増田周平

    東日本大震災に関する東北支部学術合同調査委員会の第一次報告会 2011/04

  38. 厌氧消化技术在日本有机废水和废弃物处理中的应用

    池勇志, 习钰兰, 薛彩红, 小林拓朗, 李玉友

    27 (8) 27-33 2011/04/01

  39. Methane and Hydrogen Production from Anaerobic Fermentation of Municipal Solid Wastes : Classification and Characterization based on Fat/Carbohydrate Balance

    KOBAYASHI Takuro, LEE Dong-Yeol, XU Kaiqin, LI Yu-You, INAMORI Yuhei

    Journal of environmental conservation engineering 40 (3) 159-166 2011/03/20

    Publisher: 環境技術学会

    ISSN: 0388-9459

  40. 処理方式の異なる3つの下水処理プロセスにおける温室効果ガス排出特性の評価 (第48回下水道研究発表会講演集)

    佐野 慈, 李 玉友, 西村 修

    下水道研究発表会講演集 48 169-171 2011

    Publisher: 日本下水道協会

  41. 下水道における新しい課題と取り組み

    李玉友

    環境技術 39 (11) 841-841 2010/11

  42. 生ごみの高効率メタン発酵処理を達するための栄養バランスの評価

    小林 拓朗, 李 東烈, 徐 開欽, 蛯江 美孝, 李 玉友, 稲森 悠平

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste (30) 2010/10/15

    ISSN: 0910-6766

  43. 嫌気性処理による高濃度排水の省エネルギー浄化およびクリーンエネルギー回収

    李玉友, 小林拓朗, 高橋慎太郎, 鈴木俊輔

    用水と廃水 52 (10) 835-843 2010/10

    Publisher: 産業用水調査会

    ISSN: 0513-5907

  44. Analysis of the Degradation Characteristics and Microbial Community during Anaerobic Digestion of Methanol Wastewater

    YAN Feng, KOBAYASHI Takuro, LI Yu-You, OMURA Tatsuo

    Journal of environmental conservation engineering 39 (7) 426-433 2010/07/20

    Publisher: 環境技術学会

    ISSN: 0388-9459

  45. The properties of the gas emission of methane and nitrous oxide from akita seaside sewage treatment plant

    Masuda Shuhei, Kyono Takafumi, Li Yu-you, Nishimura Osamu

    Annual report of the Society for the Promotion of Construction Engineering 45 9-15 2010/04/01

    Publisher: Tohoku University

    ISSN: 0288-9994

  46. 南蒲生浄化センターにおける温室効果ガス発生量調査業務委託報告書 Invited

    財団法人建設工学研究振興会, 西村修, 研究代表者, 李玉友, 増田周平

    2010/03

  47. 嫌気性消化による下水汚泥の減量化とエネルギー利用の効率化

    李玉友

    再生と利用 34 (127) 6-22 2010/03

    Publisher: 日本下水道協会

    ISSN: 0387-0332

  48. メタン発酵技術の新しい展開

    李玉友

    環境技術 38 (12) 841-883 2009/12

    Publisher: 環境技術学会

    ISSN: 0388-9459

  49. 廃棄物系バイオマスのメタン発酵

    李玉友, 小林拓朗, 宇佐見心

    環境浄化技術 8 (11) 1-6 2009/11

  50. 嫌気性ラグーンにおけるパームオイル圧搾廃液(POME)の分解挙動

    川内真, 久保田健吾, 谷川大輔, 李玉友, 原田秀樹, 珠坪一晃, 山口隆司, 関口勇地

    土木学会年次学術講演会講演概要集(CD-ROM) 64th (Disk 2) ROMBUNNO.VII-208 2009/08/03

  51. 厌氧发酵生物制氢微生物及工艺开发的研究进展

    李玉友, 褚春风, 堆洋平

    环境科学学报 29 (8) 1-20 2009/08

  52. 中国における都市下水汚泥の処理現況

    池勇志, 張書庭, 李玉友

    環境技術 38 (5) 35-40 2009/05

  53. 中国における水環境管理および排水処理の現況

    李玉友

    環境技術 38 (5) 297-346 2009/05

    Publisher: 環境技術学会

    ISSN: 0388-9459

  54. Analysis of the sulfur mats responsible for biological removal of hydrogen sulfide from biogas

    Li YuYou, Kobayashi Tkurou, Kubota Kengo, Harada Hideki

    Annual report of the Society for the Promotion of Construction Engineering 44 17-20 2009/04/01

    Publisher: Tohoku University

    ISSN: 0288-9994

  55. P-79 生物脱硫を行うメタン発酵槽に存在するフィラメント硫黄生成細菌(ポスター発表)

    小林 拓朗, 李 玉友, 久保田 健吾, 原田 秀樹

    日本微生物生態学会講演要旨集 (25) 86-86 2009

    Publisher: 日本微生物生態学会

  56. 下水汚泥の嫌気性消化のシステム評価およびプロセスの高効率化

    李玉友, 小林拓朗

    水 50 (9) 20-34 2008/08

  57. 嫌気性水素発酵によるバイオマスからの水素生産に関する研究の動向

    堆洋平, 李玉友, 原田秀樹

    水処理生物学会誌 44 (2) 57-75 2008/06

    DOI: 10.2521/jswtb.44.57  

  58. 10-188 Analysis of the microbial mats oxidizing hydrogen sulfide into sulfur filaments under microaerophilic environment(Microbial community analysis)

    Kobayashi Takuro, Li Yuyou, Kubota Kengo, Harada Hideki

    (24) 152-152 2008

    Publisher: 日本微生物生態学会

  59. 余剰活性汚泥を植種源としたメタン発酵槽のスタートアップ方法

    安田 大介, 北條 俊昌, 李 玉友

    廃棄物学会研究発表会講演論文集 18 518-520 2007/11/19

    Publisher: 廃棄物学会

  60. メタン発酵法による廃棄物系バイオマスの循環利用

    李玉友, 西村修

    混相流 21 (1) 29-38 2007/03

  61. 熱処理余剰汚泥の中温嫌気性消化と高温嫌気性消化の比較 (第44回下水道研究発表会講演集)

    金澤 拓大, 北條 俊昌, 李 玉友

    下水道研究発表会講演集 44 856-858 2007

    Publisher: 日本下水道協会

  62. 余剰汚泥の嫌気性消化におけるオゾン前処理が微生物群集に及ぼす影響 (第44回下水道研究発表会講演集)

    小林 拓朗, 李 玉友, 原田 秀樹

    下水道研究発表会講演集 44 847-849 2007

    Publisher: 日本下水道協会

  63. し尿・汚泥処理における膜分離技術の応用

    李玉友

    環境技術 47 (3) 174-181 2006/03

  64. 微生物群集解析からみた中温嫌気性消化と高温嫌気性消化の性能比較 (第43回下水道研究発表会講演集)

    小林 拓朗, Teepyobon Sangsan, 李 玉友

    下水道研究発表会講演集 43 989-991 2006

    Publisher: 日本下水道協会

  65. 嫌気性水素発酵の基礎既往研究と展望(Ⅱ)

    河野孝志, 李玉友, 野池達也

    用水と廃水 47 (11) 961-969 2005/11

  66. Comparison of Batch and Continuous Hydrogen Fermentation of a Mixed Substrate by Microflora

    KAWANO Takashi, WADA Katsushi, LI Yu-You, NOIKE Tatsuya

    Journal of the Japan Society of Waste Management Experts 16 (5) 350-359 2005/09/30

    Publisher: 廃棄物学会

    ISSN: 0917-0855

  67. 嫌気性水素発酵の基礎既往研究と展望(Ⅰ)

    河野孝志, 李玉友, 野池達也

    用水と廃水 47 (9) 777-783 2005/09

  68. メタン発酵技術の概要およびその応用展望

    李玉友

    JEFMA(日本環境衛生施設工業会) 73 (8) 4-18 2005/08

    Publisher: JEFMA(日本環境衛生施設工業会)

  69. バイオマス利活用(その3)―メタン発酵技術

    李玉友

    農業土木学会誌 73 (8) 739-744 2005/08

    Publisher: The Japanese Society of Irrigation, Drainage and Rural Engineering

    DOI: 10.11408/jjsidre1965.73.8_739  

    ISSN: 0369-5123

  70. ディスポーザー汚泥のメタン発酵による処理とエネルギー回収に関する検討

    奥野芳男, 芝田賢二, 一瀬正秋, 李玉友

    都市清掃 58 (266) 355-360 2005/04

  71. 生物学的リン除去と嫌気性条件下でのリン放出に関する研究 (第42回下水道研究発表会講演集 平成17年度)

    近藤 健一郎, 李 玉友, 野池 達也

    下水道研究発表会講演集 42 792-794 2005

    Publisher: 日本下水道協会

  72. 水素発酵に及ぼすpH及び固形物濃度の影響

    和田 克士, 李 玉友, 野池 達也

    廃棄物学会研究発表会講演論文集 15 515-517 2004/11/17

    Publisher: 廃棄物学会

  73. メタン回収技術の応用現状と展望

    Yu-You Li

    水環境学会誌 27 (10) 622-626 2004/10

  74. メタン発酵を用いた下水汚泥の減量化・エネルギー回収システム

    Y.Y. Li, Y. Zhang, T. Noike

    ECO INDUSTRY 9 (9) 15-29 2004/09

    Publisher: シーエムシー出版

  75. 二相式水素・メタン発酵プロセスに関する研究 (第41回下水道研究発表会講演集 平成16年度)

    北條 俊昌, 李 玉友, 野池 達也

    下水道研究発表会講演集 41 194-196 2004

    Publisher: 日本下水道協会

  76. 牛ふん尿と生ごみの混合メタン発酵に関する研究 (第41回下水道研究発表会講演集 平成16年度)

    櫻井 邦宣, 李 玉友, 野池 達也

    下水道研究発表会講演集 41 191-193 2004

    Publisher: 日本下水道協会

  77. 初沈汚泥と余剰汚泥の嫌気性消化特性の比較 (第41回下水道研究発表会講演集 平成16年度)

    阿部 聡, Sangsan Teepyobon, 李 玉友

    下水道研究発表会講演集 41 1065-1067 2004

    Publisher: 日本下水道協会

  78. 生ごみの高速メタン発酵システム

    李玉友, 水野修, 舩石圭介, 山下耕司

    ECO INDUSTRY 8 (6) 5-19 2003/06

    Publisher: シーエムシー出版

  79. High-rate methanation of the food wastes and garbage by a two-phase process with circulation of digested sludge

    LI Y.-Y.

    Environ. Eng. Res. 40 321-331 2003

  80. 都市ごみの高速メタン発酵処理システム

    李玉友

    化学工学 64 (9) 459-492 2000/09

  81. 汚泥・生ごみなどの有機廃棄物の高温メタン発酵

    李玉友

    水環境学会誌 21 (10) 644-649 1998/10

  82. EFFECT OF MOISTURE CONTENT AND CHEMICAL NATURE ON METHANE FERMENTATION CHARACTERISTICS OF MUNICIPAL SOLID WASTES

    LAY Jiunn-Jyi, LI Yu-You, NOIKE Tatsuya

    552 101-108 1996/11/22

    Publisher: 土木学会

    ISSN: 0289-7806

  83. Experiment on the Two-Stage Anaerobic and Activated Sludge Process in the Minamigamo Sewage Treatment Plant

    NOIKE Tatsuya, LI Yuyou, ENDO Atsumi

    Annual report of the Society for the Promotion of Construction Engineering 25 114-114 1990/04/01

    Publisher: Tohoku University

    ISSN: 0288-9994

  84. 嫌気性微生物の挙動

    李玉友

    水質汚濁研究(現在名:水環境学会誌) 13 (11) 548-551 1990/04

    DOI: 10.2965/jswe1978.13.548  

  85. Study on bacterial Ecophysiology in Anaerobic Digestion

    LI Yuyou

    Annual report of the Society for the Promotion of Construction Engineering 24 73-75 1989/04/01

    Publisher: Tohoku University

    ISSN: 0288-9994

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Books and Other Publications 19

  1. Anaerobic Biotechnology: Environmental Protection and Resource Recovery

    Yu-You Li, Wei Qiao

    2015/07

  2. Topical Themes in Energy and Resources

    Yu-You Li, Samir Gadow, Qigui Niu

    Springer 2015/03

  3. リサイクル・廃棄物事典

    李玉友, 小林拓朗, 劉予宇

    産業調査会 2012/03/30

  4. リサイクル・廃棄物事典

    李玉友, 小林拓朗, 劉予宇

    産業調査会 2012/03/01

  5. リサイクル・廃棄物事典

    李玉友, 小林拓朗, 劉予宇

    産業調査会 2012

  6. 実用水の処理・活用大事典

    李玉友

    産業調査会 2011/12/01

  7. Environmetal Anaerobic Biotechnology

    Yu-You Li, Takuro Kobayashi

    Imperial College Press 2010/10

  8. Environmental Anaerobic Technology

    Yu-You Li, Takuro Kobayahsi

    Imperial College Press 2010/10

  9. 汚泥の処理とリサイクル技術

    李玉友

    NTS 2010/01/27

  10. メタン発酵

    李 玉友

    技法堂出版 2009/05

  11. バイオマス技術ハンドブック

    李 玉友

    2008/09

  12. バイオガスの最新技術

    李 玉友

    2008/06

  13. バイオマスからの気体燃料製造とそのエネルギー利用

    李玉友

    ブッカーズ 2007/08

  14. エコバイオエネルギーの最前線-ゼロエミッション型社会を目指して-

    李玉友

    2005/08

  15. 水環境保全のための生物学

    李玉友

    産業用水調査会 2004/11

  16. バイオエネルギー技術と応用展開

    李玉友, 水野修, 舩石圭介, 山下耕司

    シーエムシー出版 2003/10/31

  17. 食品産業における排水・汚泥低減化技術の未来を拓く

    李玉友

    恒星社 2002/11

  18. 環境システムにおける計測制御自動化の最近の動向

    李玉友

    EICA環境システム計測学会 2000/10

  19. 環境微生物工学研究法

    李玉友, 野池達也

    技報堂出版 1993/08

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Presentations 6

  1. A pH and temperature-phased two stage process with internal circulation for stable hydrogen and methane production from food waste International-presentation

    The 2010 Asian Bio-Hydrogen Symposium and the 2010 APEC Advanced BioH2 Technology conference 2010/11/15

  2. Applications and New Developments of Biogas technology in Japan: Operation performance of some full scale plants International-presentation

    Biokorea 2010 2010/09/01

  3. Detection and characterization of specific group of microorganisms in various environments using molecular techniques International-presentation

    The 6th International Conference on Interfaces Against Pollution 2010/05/16

  4. Characterization of the environment and the microbial community in a biofilm oxidizing H2S under microaerophilic conditions inside an anaerobic digester International-presentation

    Takuro Kobayashi

    The 6th International Conference on Interfaces Against Pollution 2010/05/16

  5. Indirect oxidation of antibiotics sulfamethoazole using in situ generated hydrogen peroxide on activated carbon fiber cathode International-presentation

    Aimin Wang

    The 6th International Conference on Interfaces Against Pollution 2010/05/16

  6. Application and new development of biogas technology in Japan International-presentation

    The 6th International Symposium on Environmental Anaerobic Technology 2009/11/12

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Industrial Property Rights 10

  1. 排水処理方法(DMF)

    李玉友, 宮前博子, 舩石圭介

    3600220

    Property Type: Patent

  2. 油脂の嫌気性処理方法

    山下耕司, 李玉友, 小林英正

    Property Type: Patent

  3. 油脂含有廃棄物の処理方法

    李玉友, 佐々木宏, 山下耕司

    Property Type: Patent

  4. 廃棄物処理方法およびその装置

    佐々木宏, 李玉友, 関廣二

    Property Type: Patent

  5. ポリエチレングリコール含有排水の処理方法

    松尾幸彦, 舩石圭介, 李玉友

    Property Type: Patent

  6. 廃棄物処理方法(生ごみの無希釈メタン発酵)

    李玉友, 鳥居久倫, 佐々木宏, 関廣二

    3554689

    Property Type: Patent

  7. 廃棄物処理方法(浄化槽汚泥)

    関廣二, 李玉友, 奥野芳男, 佐々木宏, 赤嶺和浩

    3570888

    Property Type: Patent

  8. 廃棄物処理方法(栄養塩添加)

    李玉友, 関廣二, 奥野芳男, 佐々木宏

    3145957

    Property Type: Patent

  9. 廃棄物処理方法(2)

    関廣二, 李玉友, 奥野芳男, 佐々木宏

    3400292

    Property Type: Patent

  10. 廃棄物処理方法(1)

    奥野芳男, 関廣二, 李玉友, 佐々木宏

    特許第3445464号

    Property Type: Patent

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Research Projects 37

  1. 環境微生物の解析 Competitive

    System: The Other Research Programs

    2004/04 - Present

  2. バイオマス利活用技術・システム Competitive

    System: The Other Research Programs

    2003/04 - Present

  3. Bioenergy (biomethane, biohydrogen) Competitive

    System: Contract Research

    1993/04 - Present

  4. Anaerobic biotechnology Competitive

    System: The Other Research Programs

    1987/04 - Present

  5. 異分野設計基盤の統合化で実現する炭素循環技術新結合の開発促進

    福島 康裕, 倪 嘉苓, 大野 肇, 李 玉友, 八木原 昂輝

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(B)

    Institution: 東北大学

    2024/04/01 - 2027/03/31

  6. 脱炭素化に向けた創エネ・リン資源回収型下水高度処理システムの開発

    李 玉友, 北條 俊昌, 安井 英斉, 増田 周平, 久保田 健吾, 佐野 大輔, 覃 宇

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(A)

    Institution: 東北大学

    2022/04/01 - 2025/03/31

  7. 嫌気性MBRと二段アナモックス法を用いた有機性廃棄物の処理とエネルギー回収

    李 玉友, LI QIAN

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特別研究員奨励費

    Institution: 東北大学

    2021/04/28 - 2023/03/31

  8. 嫌気性MBRと二段アナモックス法を用いた有機性廃棄物の処理とエネルギー回収

    李 玉友, LI QIAN

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特別研究員奨励費

    Institution: 東北大学

    2020/11/13 - 2023/03/31

  9. Integrating AnDMBR and Membrane-enhanced Anammox for Wastewater Treatment and Bioenergy Recovery

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for JSPS Fellows

    Institution: Tohoku University

    2019/11/08 - 2022/03/31

  10. Development of municipal wastewater system by using anaerobic microoragnism

    Li Yu-You

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2019/04/01 - 2022/03/31

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    In this study, a new system combining an anaerobic membrane bioreactor (AnMBR) and a one-stage partial nitritation/anammox (PNA) reactor was developed to realize energy-saving/energy-creation in the treatment of municipal wastewater. Both small scale and pilot scale experiments were conducted in a wastewater treatment plant. The methanogenic performance and membrane operation for AnMBR were studied by changing the HRT from 24 to 6 hours and temperature from 25 to 15 ℃. The effluent COD was stable < 50 mg/L, always met the discharge standards. The one-stage PNA reactor could reduce the effluent BOD to 10 mg/L or less and T-N (total nitrogen) to 10 mg/L or less with an HRT of 2 h, thereby achieving the target values. This research proved that applying mainstream AnMBR in temperate climates can significantly reduce electricity demand and achieve energy positive.

  11. Development of novel water infrastructure able to control human norovirus prevalence

    Omura Tatsuo

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2018/04/01 - 2022/03/31

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    In mouse noroviruses used as surrogate model viruses for human noroviruses, we found that disinfection with free chlorine and alkaline treatment caused adaptive evolution in which the mouse norovirus population acquired disinfection resistance. These results suggest that the use of virus strains with higher susceptibility to disinfection (i.e., lower disinfection resistance) in disinfection tests performed in sewage treatment is likely to introduce bias in the assessment of viral strain inactivation efficiency. This finding indicates the need to use less susceptible virus strains in disinfection testing.

  12. 廃棄物系バイオマスのバイオエネルギー生産システムの革新と効率化

    李 玉友, QIN YU

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特別研究員奨励費

    Institution: 東北大学

    2018/04/25 - 2020/03/31

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    バイオマスの水素発酵またはメタン発酵によってバイオ燃料を生産できることが知られ、世界的に注目されている。本研究の目的は、水素発酵とメタン発酵を組合せて発酵液循環による無加水発酵、可溶化促進およびアナッモクス後処理などの新しい工夫により、地域で発生するバイオマスの統合的エネルギー化システムを構築しようとしたものである。具体的には次の研究項目に取り込むこととした:(1)水素・メタン循環二段発酵技術の融合最適化、(2)熱処理による消化残渣可溶化促進の最適化、(3)担体添加型一槽式Anammoxを用いた廃棄物消化液の高度処理、(4)地域バイオマスのエネルギー化センターの効率化およびLCA, LCA手法を用いたシステム評価。最終的には。低環境負荷でバイオエネルギー回収を実現する革新的廃棄物系バイオマスの燃料化システムおよびその評価手法を開発することである。 平成30年度は主に都市ごみを対象とした水素・メタン循環二段発酵技術の融合最適化について実験的検討を行った。具体的には、循環式二相消化プロセスを組み立て、生ごみと廃紙を実験原料として用いて温度、容積負荷と循環率などを変化させて連続実験を行うことで、水素・メタン生成工程の状況変動を把握した。運転条件の最適化より得られた先端発酵システムは水素・メタン生成機能を備え、性状変動範囲が広く多種類の廃棄物に対して安定した水素とメタンのバイオ燃料生成状況が得られた。なお、分子生物学手法を用いてこの先端発酵システムにおける微生物群集構造と生化学反応との相互関係を解明した。本研究により、都市廃棄物の減量化を実現する同時に水素・メタンを連続的に生産できる先端システムを開発し、未来の循環型社会と低炭素/水素社会の構築に大きく寄与できるものである。

  13. 嫌気性膜分離法と一槽型アナモックス法による窒素含有化学産業排水の処理

    李 玉友, CHEN HONG

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特別研究員奨励費

    Institution: 東北大学

    2016/11/07 - 2019/03/31

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    本研究の目的は省エネルギーと低炭素化に対応する化学産業廃水の革新的処理システムを開発しようとするものである。窒素含有化学産業廃水からの効率的メタン生成とアンモニアの低炭素型高度処理を同時に実現するために、嫌気性膜分離反応槽を用いたメタン生成ユニット、担体添加型一槽式ANAMMOXを用いた窒素処理ユニットを含む新規ハイブリッドシステムを開発する。具体的には、次の研究項目に取り組むこととした:1.要素技術である嫌気性膜分離メタン生成プロセスの基本的性能の研究、2.担体添加型一槽式アナモックスを用いた嫌気性膜処理ろ液の高度処理、3.新規融合プロセスの長期連続実験による性能確認および微生物群集構造解析、4.システム評価と設計最適化の研究この一連の研究を通して物質収支、エネルギー収支だけでなく、LCA評価も解析して、新しいシステムのエネルギー回収や低炭素化効果を明らかにする。 平成30年度は主に嫌気性膜分離メタン発酵のろ液に含まれる高濃度のアンモニア窒素を除去するための担体添加型一槽式アナモックスについて実験的研究を行った。連続流式一槽型アナッモクスプロセスによる低濃度アンモニア排水の窒素処理効果を検討するために、担体添加型とグラニュール形成型の2系列の装置で連続実験を行い、曝気強度、DOを調整しながら窒素除去性能の向上を目指した。その結果、流入アンモニア濃度が50, 75mg/Lの条件において窒素除去率は70%以上に達成できることを明らかにした。また、反応槽内の微生物群集構造についても分子生物学的手法を用いて解析した。

  14. 廃棄物系バイオマスからのエネルギー生成と窒素除去のハイブリッドシステムの開発

    李 玉友, LU XUE-QIN

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特別研究員奨励費

    Institution: 東北大学

    2016/11/07 - 2019/03/31

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    本研究の目的はエネルギー回収と低炭素化に対応する革新的廃棄物系バイオマス利活用システムを開発しようとするものである。廃棄物系バイオマスからの効率的メタン生成と発酵液の低炭素型高度処理を同時に実現するために、新規前処理ユニット、嫌気性膜分離反応槽を用いたメタン発酵ユニット、担体添加型一槽式ANAMMOXを用いた窒素処理ユニットを含む新規ハイブリッドシステムを開発する。具体的には、次の研究項目に取り組む予定:(1)バイオマスの分解を促進する前処理ユニットの研究、(2)AnMBRによる可溶化バイオマスのメタン生成の効率化、(3) 担体添加型一槽式ANAMMOXを用いたメタン発酵消化液の高度処理、(4)システム評価と応用検討。この一連の研究を通して物質収支、エネルギー収支だけでなく、LCA評価も解析して、新しいシステムのエネルギー回収や低炭素化効果を明らかにする。 平成30年度は中温条件で余剰汚泥を含む実廃棄物(4種類)の混合物を用いて嫌気性MBRの立ち上げを行い、混合メタン発酵の安定した処理が可能であるかどうかについて評価を行ったとともに、設計データを得た。AnMBRによる処理実験では、HRT30, 10, 5および3.5日の条件における流入CODのメタンへの変換率はそれぞれ、80%, 67%, 56%および46%であった。余剰汚泥を多く含む混合メタン発酵では、HRTを5日以下に短縮しない方がよいと考えられる。バイオガスの生成量は、HRT30, 10, 5および3.5日の条件に対応して、0.71, 0.62, 0.58, 0.46 L/投入g-VSであり、HRTの短縮に伴い顕著に減少したので、10日ぐらいが適切と考えられる。HRT5日におけるバイオガスの組成として、メタン(CH4)が57%、二酸化炭素(CO2)が33%, 硫化水素(H2S)が1900ppmであった。

  15. 嫌気性膜分離法とアナモックスの融合デザインによる下水処理システムの革新

    李 玉友, CHEN RONG

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特別研究員奨励費

    Institution: 東北大学

    2015/11/09 - 2018/03/31

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    本研究の目的は資源回収と低炭素化に対応する革新的下水処理技術を開発しようとするものである。具体的には有機物の分解とメタン回収を実現できる嫌気性膜分離法と効率的に窒素除去できるアナモックスを組み合わせしてバイオガスの回収を図るとともに、有機物と窒素の同時除去も実現する新規システムを確立するために、次の研究項目に取り組んだ:(1)嫌気性膜分離法による下水中の有機物除去とメタンガス回収の検討、(2)単体投入型一槽式アナモックスの検討、(3)嫌気性膜分離法とアナモックスの融合プロセスによる下水処理の連続実験、(4)システム評価と設計最適化の研究。 平成27年度では、嫌気性膜分離法による下水処理の評価に焦点を絞り、実験装置を組み立て、トイレペーパーを含む人工下水の連続実験を行い、水質浄化性能、メタン生成および膜分離機能に及ぼす滞留時間を検討し、安定した処理水質が得られたとともに、トイレペーパーのメタン化を明らかにした。H28年度は嫌気性膜分離法処理における膜ファーリングの防止方法を検討したとともに、担体投入型一槽式アナモックスユニットの構築に焦点に絞り、室温条件で低濃度アンモニア排水に対する担体投入型一槽式アナモックスユニットの処理性能を検討した。具体的にはアンモニア濃度と水理学的滞留時間を変更させた連続実験を行い、80%以上の高い窒素除去率が得られた。H29年度は新規融合プロセスの処理性能の実験的検討として嫌気性膜分離反応槽を用いたメタン生成ユニットと担体投入型一槽式アナモックスを用いた窒素除去ユニットを融合した新規プロセスを構築して、室温条件で水理学的滞留時間、有機物負荷、窒素負荷などの下水処理の運転指標を変化させた連続実験と行い、処理水質を把握したとともに、各ユニット基本的運転条件を提示した。

  16. Environmental adaptive evolution of waterborne viruses under water recycling systems

    Omura Tatsuo

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2015/04/01 - 2018/03/31

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    We investigated the adaptive evolution of gastroenteritis viruses under the repeated disinfection with free chlorine. Murine norovirus (MNV) and Rhesus rotavirus (RRV) were used as surrogates for human norovirus and rotavirus. As a result, resistant populations of these viruses to free chlorine were successfully acquired by the repeated treatment with free chlorine. The single nucleotide polymorphisms revealed that specific mutations were found in outer capsid proteins of these viruses, which implied that some mutations in structural proteins may contribute to the virion stability and lead to the change in free chlorine susceptibility. Based on these results, it was concluded that the free chlorine disinfection can be regarded as a selection pressure on gastroenteritis viruses.

  17. Development of Innovative Treatment Technology for Removal of Radioactive Cesium in Designated Wastes

    OZAKI HIROAKI

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Osaka Sangyo University

    2014/04/01 - 2018/03/31

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    In the aftermath of the accident of 2011 Fukushima Daiichi Nuclear Power Plant, sewage sludge and municipal solid waste contaminated with radioactive cesium (rad-Cs hereafter) has been produced in 12 Prefectures. We have investigated a technique that can reduce the volume of fly ash from melting furnace and incinerator of sewage sludge by extracting and co-precipitating and concentrating rad-Cs in a small amount of hexacyanoferrate precipitate. We have conducted on-site tests at a sewage treatment plant in north of the Kanto district. Notably, fly ash from melting furnace contained more water soluble rad-Cs than that of incinerator. The removal of Cs from the extract by hexacyanoferrate co-precipitation was high (>95 %) except for oxalic acid extract of incinerator fly ash. We conducted ultra-filtration of the extract at one of the on-site tests, and found that part of rad-Cs in the extract was colloid, and therefore could not be coprecipitated by hexacyanoferrate.

  18. Environmental conservation in North China under rapid economic growth

    Fukushi Kensuke, PU Jian

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: The University of Tokyo

    2014/04/01 - 2017/03/31

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    Structure of life style in both urban area and rural area has changed tremendously with rapid economic growth in North China. Planning and Implementing of environmental policy must be paid special attention. The purpose of this research proposes a model of sustainable development in urban fringe area of Tianjin located at North China with building proper combining technology with institution based on analyzing current situation and projection for pollution of water, soil, agriculture, livestock farming and so on. International workshop, “Sustainable development by integrating urban area with rural area”, is co-organized by The University of Tokyo and Tianjin government and is the most important part of this research to share research results and methods with each other, and install them in society. Necessity of method and apparatus for treating living wastewater had been founded, which can respond for rapid change of lifestyle with economic growth.

  19. A study on innovation of sewage treatment technology by using anaerobic membrane bioreactor

    LI Yu-You

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2014/04/01 - 2017/03/31

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    An experimental study on the innovation sewage treatment by using anaerobic membrane reactor (AnMBR) was conducted. The effects of HRT, temperature and sewage composition on treatment performance of AnMBR were investigated. The treatment performance was evaluated by suing two type of membranes, flat sheet membrane and hollow fiber membrane, and a total of four different sewages including three artificial sewages containing surfactants (AE, LAS) and SS (toilet paper) respectively, and real sewage. The COD removal was high as 95-97% for artificial sewages. In the all experiments, AE removal was over 90%, but the LAS removal was only about 50%.

  20. 促進酸化と生物処理のハイブリッドシステムを用いた抗生物質系廃水の浄化

    李 玉友, NIE YULUN, NIE Yulun

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特別研究員奨励費

    Institution: 東北大学

    2014/04/25 - 2016/03/31

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    本研究の目的は、抗生物質生産廃水の処理とリスク管理に適した省エネルギー・低炭素型の高効率的処理技術を確立することである。具体的には、抗生物質分解の促進方法として新しい触媒を検討して酸化分解を効率よく行う新規促進酸化技術を創出するとともに、促進酸化によって生成する中間生成物を膜分離生物処理ユニットによって生物分解を行うことで、新規促進酸化と膜分離生物分解のハイブリッドデザインを用いた製薬系抗生物質含有廃水の新規処理システムを構築しようとするものである。平成26年度ですでに促進酸化処理ユニットを検討したことを踏まえ、平成27年度は主に膜分離生物処理ユニットに絞って実験的研究を行った。その結果、次のような具体的成果が挙げられた。 (1)嫌気性膜分離反応槽によるセルロース含有排水の処理: 嫌気性膜分離反応槽を用いてセルロース含有と含有しない2種類の排水処理について25℃でHRTを変化させた連続試験を行い、物質収支、処理水質および膜ろ過性能を把握した。HRT12時間以上ではHRTによる影響はほとんど見られず、投入の65-72%がメタンガスとして回収できた。また、排水中にセルロース成分がほとんど分解された。 (2)嫌気性膜分離反応槽による界面活性剤の分解:ラボスケール嫌気性MBRを用い,水理学的滞留時間や界面活性剤AE濃度を変化させて運転を行った。その結果,COD除去率はAE濃度5.0-200 mg/Lの条件で96%以上であり,有機物除去への阻害は見られなかった。また,AE除去率は99%以上と高く,さらに分解されて最終的にメタンになることが分かった。一方AEの添加により,膜ファウリングの指標である膜圧増加速度が大きくなった。

  21. メタン発酵液の処理に対応する新規アナモックスプロセスの開発

    李 玉友, NIU QIGUI, NIU Qigui

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特別研究員奨励費

    Institution: 東北大学

    2014/04/25 - 2016/03/31

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    メタン発酵はバイオマス廃棄物処理およびエネルギー回収に活用できる技術として期待されている。しかし、メタン発酵廃液の処理は重要な課題であり、今後メタン発酵によるバイオマスのエネルギー化利用を推進するために、メタン発酵廃液の適正処理は避けて通れない。本研究は廃棄物系バイオマスのエネルギーを図るためのトータルシステムの合理化と技術革新を目指すため、メタン発酵廃液からの窒素除去に対応する新規アナモックスプロセスを開発しようとするもので、平成27年度では次の成果が得られた。 (1)UASB-Anammoxプロセスの安定性に与える阻害因子の影響および回復過程に関して連続実験を通して解析した結果、アンモニアおよび亜硝酸による阻害濃度範囲を明らかにした。また、遊離アンモニアFA < 5 mg/Lかつ遊離亜硝酸FNA < 2 μg/Lの条件においてプロセスは高い除去率が得られた。なお、制御範囲としてpHが7.5-8.5の範囲にあって、FAが10 mg/100 mgNH4+-N以下且つFNAが0.005 mg/100 mg NO2-N以下に最適化された。本研究に構築された制御範囲は工学的な応用価値が高い。 (2)ハイブリッド単槽式脱窒素プロセスの研究として完全混合反応槽に担体を投入することにより、好気性アンモニア酸化細菌(AOB)と嫌気性Anammox細菌を共存させ、一槽式Anammoxの連続実験を行い、その脱窒性能、関連細菌の活性および菌体付着した担体の状況を明らかにした。 (3)本研究では次世代シーケンスでAnammox反応槽における微生物群集構造を解析した結果、Planctomycetes門は150日目の0.2%から450日目の31.6%に上昇したことを把握したとともに、検出した優占Anammox種はCandidatus BrocadiaとCandidate Kueneniaであった。

  22. A study on new technology for treating sulfate-containing wastewater by combined control of anaerobic methanogenic archaea and sulfur metabolic bacteria

    Li Yu-You

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2014/04/01 - 2016/03/31

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    The effect of COD/SO42- ratio on anaerobic treatment of synthetic chemical wastewater containing sulfate, acetate acid and ethanol was investigated using UASB reactor. The continuous experiment result show that at COD/SO42- ratio of 20 and COD loading rate of 25.2g-COD&middot;L-1&middot;d-1, the COD removal rate was maintained as high as 87.8%. With COD/SO42- ratio decreased from 20 to 0.5, the ratio of influent COD converted into biogas methane dropped from 80.5% to 54.4%. Methane-producing was the main reaction through the whole experiment operation time. COD/SO42- ratio played an important role in COD and electrons utilization by SRB (sulfate reducing bacteria) and MPA (methane producing archaea).

  23. 埋立処分場浸出水処理のための廉価・高効率システムの研究

    李 玉友, HE SHILONG, HE Shilong

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特別研究員奨励費

    Institution: 東北大学

    2013/04/01 - 2016/03/31

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    廃棄物の最終処分施設として埋立処分場が環境保全上の重要な役割を果たしている。しかし、埋立処分場で発生する浸出水には高濃度の有機物の他に、窒素や難分解性物質も含むので、そのすべての汚濁物質を効率よく浄化処理するために新しい技術の開発が求められている。近年、水処理技術の進歩により、様々な新しいユニットプロセスが提案されている。本研究は、嫌気性生物反応槽による有機物の除去、SHARONとANAMMOXによる窒素除去のプロセスを組み合わせることによって、埋立処分場浸出水を効率よく処理する新しい排水浄化システムを確立しようとする技術開発である。 平成27年度は、浸出水のようなC/N比の低い排水に対応した省エネルギー型の新たな窒素除去方法として、Anammox反応を利用することを目指して関連の研究進展をレビューして総説論文を英文誌「Water, Air, and Soil Pollution」に掲載したとともに、Anammox反応に対すpHショックの影響に関する実験的研究を行った。pHを9.0から7.0に変えて僅か1日の運転でアンモニアおよびTN除去率はそれぞれ急激手に低下した。その後除去率の回復は数ヶ月長期間を要した。また、Anammox阻害の主な原因はFAとFNA濃度の増加によるもので、FAとFNA濃度をそれぞれ15mg/L と15 μg/L以下に制御する必要があることを把握した。関連の成果を英文誌「Ecological Engineering」に発表した。

  24. 新規促進酸化と膜分離生物分解の融合デザインを用いた抗生物質汚染制御システムの開発

    李 玉友, LEDEZMA ESTRADA Adriana

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特別研究員奨励費

    Institution: 東北大学

    2013/04/01 - 2015/03/31

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    近年、水環境中における医薬品類(PPCPs)の検出が注目を集めるようになった。医薬品類は低濃度で生体の特定の生理調整機能に作用するように製造されているため、水生生物への生態的影響、人の健康への影響、薬剤耐性菌の発生、下水処理場微生物への影響などが懸念され、その分解除去が重要な課題となっている。特に抗生物質の多くは難分解性であり、通常の排水処理方法ではほとんど処理できないので、新しい技術の開発が求められている。本研究は、新規促進酸化処理技術による前処理と膜分離生物反応槽(MBR)による生物分解の二つのユニットを組み合わせることによって、難分解性である抗生物質を効率よく除去する新しい排水浄化システムを確立しようとする技術開発である。平成26年度では具体的には次のような成果が得られた。 (1)新規高効率触媒による電気フェントン酸化の効率化: まず電気フェントン酸化における電極材料の表面変化を解析してその耐用性能を把握した。また反応促進の金属触媒としてFe2+の他に,Mn2+,Cu2+およびCo2+をテストし,Co2+による促進効果が最も高いことを明らかにした。 (2)嫌気性処理における抗生物質の挙動に関する解析: 余剰活性汚泥の嫌気性消化において抗生物質セファレキシン(Cefalexin)の濃度を0mg/Lから2000mg/Lまで変化させてメタン発酵の回分実験を行い、その阻害影響を把握した。 (3)嫌気性反応槽の連続実験: 室内規模のUASB反応槽を用いて流入COD濃度1000mg/Lの排水で滞留時間を変化させた連続実験を行い、COD除去率とメタン生成収率に及ぼす有機物負荷と滞留時間の影響を解析した結果、COD除去率は81%以上、メタン生成収率0.33L/g-除去CODのよい成績が得られた。また、嫌気性膜分離反応槽の組み立てと連続運転も試みた。

  25. New technology of wastewater treatment using combined design of low-temperture archae and functional membrane

    LI Yu-You

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2012/04/01 - 2014/03/31

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    A submerged anaerobic membrane bioreactor (SAMBR) combining anaerobic digestion and membrane separation was developed. A lab-scale SAMBR treating two kinds of synthetic wastewater were continuously operated at a room temperature to investigate the effect of hydraulic retention time (HRT) on the treatment performance. At HRT of 12 hours, the chemical oxygen demand (COD) and biochemical oxygen demand of effluents in the soluble synthetic wastewater and suspended solids contained synthetic sewage were 34, 11 mg/L, 19, 8 mg/L, and 72, 65% of input COD was converted to methane respectively. Based on the cloning analysis of Archaeal community, the acetate-utilizing Methanosaeta accounted for 70% in the soluble synthetic wastewater reactor. In contrast, about suspended solids (SS) contained synthetic wastewater reactor, Methanosaeta and hydrogen-utilizing Methanoregula were detected at the same rate.

  26. 熱処理の導入による下水汚泥と生ごみの混合メタン発酵の効率化

    李 玉友, QIAO Wei

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特別研究員奨励費

    Institution: 東北大学

    2012 - 2013

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    本研究は、嫌気性微生物による分解作用を利用することによって下水汚泥と食品廃棄物などの廃棄物系バイオマスからバイオガスを効率よく回収するバイオマス利活用・再生エネルギー生産のための技術開発である。具体的には、嫌気性分解の促進方法として膜分離型反応槽と前処理を導入し、その最適な操作条件およびその装置化を検討したとともに、余剰汚泥と食品廃棄物の混合メタン発酵特性を解析することである。平成25年度の主な成果は次の通りである。 (1)回分実験による様々な食品廃棄物のメタン生成ポテンシャルの把握、 食品工場で発生する乳製品液, コーヒーかす, コーヒー液, 余剰活性汚泥のCOD分解率が確それぞれ83.3%、74.3%、57.3%、32.3%であった。混合基質の分解率は71.3%、メタン生成ポテンシャルは260mLCH4/g-CODが確認された。またコーヒーかすの破砕の有無は反応速度に影響を与えるが、メタン生成ポテンシャルには大きな影響を与えないことが分かった。 (2)CSTR型反応槽および膜分離メタン発酵法を用いた混合発酵の連続実験、 混合基質を用いてHRT30日から8,5日まで変化させることによって、COD容積負荷を4,8, 12,14g/L/dで連続実験を行った結果、COD容積負荷8g/L/dで安定運転が実現できて、COD除去率は58%と比較的に高かった。バイオガスの発生倍率は投入原料容積の40倍で、メタン含有率は60-65%であった。それ以上負荷を向上させると、VFAの蓄積とpHの低下が確認された。 (3)混合発酵による促進効果および全体システムの総合評価 運転が安定していたHRT15日のデータを元にケーススタディを行った。食品メーカー工場から排出される廃棄物量を10トン/日としてメタン発酵させると、262m3/日のメタンガスが得られ、これを都市ガスに換算すると231m3/日で一般家庭の249世帯分の一日あたりのガス使用量相当となった。混合基質はTSベースで56%減容化した。

  27. An integrated approach to minimise organicpollution in Danang, Vietnam

    YASUI Hidenari, KATO Takaaki, RI Gyokuyu, KADOKAMI Kiwao, OTOMA Suehiro

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: The University of Kitakyushu

    2010 - 2012

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    An implementation of low-cost system toremove Dioxins in soil, which is a consequence of Vietnam war in 1960s-1970s is highly desired in Danang for its safe urban development. In this regard, a development of improved methane fermentation process receiving organic wastes was highlighted toprovide heat energy for the thermal decomposition of dioxin-polluted soil. While developing the new process in lab-scale, the material flow of municipal solid wastes in Danang including food waste was clarified through field survey. It appeared that a large amount of the food waste was currently being beneficially transferred to piggery farms outside Danang, and accordingly non-feedable fraction (e.g. septic tank sludge) wasthought to be the essential organic source for the methane fermentation process, unlikeother developed countries. The field research also reveled apart from the hot-spots of Dioxins, the presence of the compounds in Danang river was limited and most of micropollutants were mainly attributed to insecticides from farms in the area.

  28. 水素・メタノール複合発酵グラニュールを用いた新規バイオ燃料生産技術の研究

    李 玉友

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 挑戦的萌芽研究

    Institution: 東北大学

    2009 - 2010

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    我が国には,約100万ヘクタールもの未利用地があり,2020年頃における資源作物の年間収穫可能量は、約1200万トン(乾燥重量),エネルギー資源として原油換算で約540万キロリットルと試算され,効果的なバイオマスエネルギー変換技術の開発が求められている。本研究は水素発酵技術と微生物のグラニュール化現象を組み合わせることにより,バイオマスのエネルギー転換効率を飛躍的に向上させるための技術開発である。 本年度では高温UASB反応槽の水素発酵性能評価と水素生成微生物の特定および保持能を明らかにすることを目的とし,HRTを変化させた連続運転によって,UASBリアクターを用いた合成でんぷん廃水の高温水素発酵における物質変換特性および水素生成グラニュールの微生物群集構造の解析を行った。容積負荷16-32kg-COD_<Cr>/m^3/dの範囲で基質分解率85%以上の良好な処理および安定した水素生成が達成でき,最大水素収率はHRT24hのとき1.2mol H_2/mol glucoseを記録した.この結果は,水素発酵の許容負荷の点では,UASBの方が優れていることを示している.代謝産物の構成はHRTに伴って変化し,HRT24hとHRT 12hでは酢酸と酪酸が優勢であったのに対し,HRT 16hでは乳酸が優勢であった. 水素生成グラニュールの16S rRNA遺伝子を標的としたクローン解析とFISH解析の結果,槽内では各HRT条件において水素生成細菌のThermoanaerobaterium属が優勢であった.このことから,運転期間を通して高温UASBリアクター内にはThermoanaerobaterium属が保持され,これらが水素生成を担っていることが示唆された.

  29. RESEARCH ABOUT THE DEVEROPMENT OF THE URBAN ENVIRONMENT PRESERVATION SYSTEM ADAPTED TO THE GLOBAL ENVIRONMENT PRESERVATION

    NOIKE Tatsuya, OHTA Yukio, WATANABE Yoshikimi, HANAKI Keisuke, MATSUO Tomonori, MIYAHARA Takashi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: TOHOKU UNIVERSITY

    1995 - 1996

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    METHANE,THE MOST ABUNDANT AND STABLE HYDROCARBON GAS IN THE ATMOSPHERE,PLAYS AN IMPORTANT ROLE IN THE PHOTOCHEMISTRY OF BACKGROUND TROPOSPHERE.THE GREENHOUSE EFFECT OF METHANE IS CONSIDERED TO BE 25 TIMES OF THAT OF CARBON DIOXIDE IN THE ATMOSPHERE.NITROUS OXIDE IS ONE OF THE EFFECTIVE CREENHOUSE GASES.THE CURRENT ATMOSPHERIC NITROUS OXIDE IS PAAROXIMATELY 310 PPB AND IS INCRESING AT A RATE OF 0.2-0.3%/YR.IN THIS PROJECT,WE STUDY ABOUT THE DEVEROPMENT OF THE URBAN ENVIRONMENT PRESERVATION SYSTEM ADAPTED TO THE GLOBAL ENVIRONMENT PRESERVATION.HYDROGEN FERMENTATIONS BECAME STABLE AFER 50 DAYS.AND IT DID NOT EFFECT THE DIFERENCE OF SEED SLUDGE.NITROUS OXIDE DISSOLVED IN THE EFFLUENT FROM THE FIRST REACTOR WAS EFFECTIVELY CONSUMED IN THE SECOND REACTOR (ANOXIC TANK) BY DENITRIFICATION.ADDITION OF METHANOL INTO THE FIRST REACTOR WAS AN ORGANIC CARBON SOURCE FOR DENITRIFIERS WAS EFFECTIVE TO SUPPRESS NITROUS OXIDE PRODUCTION IN THE REACTOR.ENVIRONMENTAL ADVANTAGE OF DISTRICT HEATING SYSTEM UTILIZING THE WASTE HEAT FROM SEWAGE WAS EXAMINED BY USING THE METHOD OF LIFE CYCLE ASSESSMENT.CARBONDIOXIDE EMISSION IN OPERATION STAGE IS LOWER WHEREAS THAT IN CONSTRUCTION STAGE IS HIGHER IN THE DISTINCT HEATING SYSTEMEMIT LESS CARBONDIOXIDE THAN THE CURRENT CONDITION.

  30. 嫌気性グラニュール汚泥の分解能力とその微生物学的構造との関係の解明

    李 玉友

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 奨励研究(A)

    Institution: 東北大学

    1995 - 1995

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    本研究はグラニュール汚泥の微生物生態学的構造とその分解能力に及ぼす基質種類の影響を把握することを目的として、有効容積2.8LのUASBリアクターを5基用意し、それぞれギ酸(C1)、酢酸(C2)、プロピオン酸(C3)、酪酸(C4)および混合有機酸(CODベースでC2:C3:C4=2:1:1)の人工基質を用いて37℃で約6カ月間UASBリアクターを運転した。安定状態に達したグラニュール汚泥について解析した結果、次のへ結論が得られた。 (1)ギ酸及び酢酸を基質とした場合のグラニュールは小さく、沈降性も若干劣っている。これに対して反応系が比較的複雑なプロピオン酸、酪酸及び混合VFAを基質とした場合、形成されたグラニュールは大きくて、しかも沈降特性も優れている。 (2)ギ酸グラニュールはギ酸を利用するSMAが高かったが、それ以外のVFAを利用できなかった。また、酢酸グラニュールは高い酢酸分解能とわずかのギ酸分解能(SMA)を示したが、C3以上のVFAを分解できなかった。その他の3種類のグラニュールはいずれも酢酸に対するSMAが高かっただけでなく、比較的多様な分解能力を有している。 (3)ギ酸及び酢酸グラニュールの細菌構成は単純で、Methanobacterium formicicumおよびMethanothrixがそれぞれ優勢となっている。プロピオン酸の分解には共生コロニーが大きな役割を果たしている。C2-C4のVFAを分解するグラニュールにおいて糸状のMethanothrixがグラニュールの形成に大きな役割を果たしている。

  31. Developmental Research of High-Performance UASB Process by Using Interal-Circulation and Two-Stage Structure

    NOIKE Tatsuya, MATSUMOTO Akito, OMURA Tatsuo, AOI Toru, MIYAHARA Takashi, LI Yu-you

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Developmental Scientific Research (B)

    Institution: Tohoku University

    1994 - 1995

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    The objective of this study is to develop a high-performance UASB process by using interal-circulation and two-stage structure. For this perpose, both the laboratory-and full-scale investigation were conducted using various wastewaters at mesophilic condition (35゚C). Based on the results, the following conclusions can be made : 1)Although the treatment porformance of the UASB process was affected by the chemical nature of the influent wastewater, The maximum COD loading rate for treating all substrate was over 25 g/L/day for meantaining a high COD removal of 95%. 2)The microstructure of anaerobic biogranules treating a wide wariety of wastwaters was investigated using light and electron micrsocopies. Results indicated that the microstructure of the UASB granules was strongly dependent on the degradation kinetics of substrates. Both the acetoclastic Methanothrix and syntrophic microcolony were found as the two key structural elements in the granules. This seems to suggest that they likely play an important role in sludge granulation. 3)A comparative study on the treatment performance of anaerobic hybred reactorwas conducted by using glutamate wastewater as a substrate. The maximum capacity of COD loading rate of the anaerobic hybrid reactor process was 12.0 g/L/day which is 1.5 times of that of the anaerobic filter process. 4)With two-phase anaerobic digestion process, sulfate in wastewater could be effectively removaed in acidogenic phase. In paiticular, sulfate removal efficiency reached to 46% at COD/S ratio of 13 and to 98% at COD/S ratio of 50 when HRT was loger than 6 hours.

  32. Construction of High-Rate Anaerobic Process in Treating Aromatic Compounds-Containing Wastewater

    NOIKE Tatsuya, MIZUNO Osamu, MIYAHARA Takashi, LI Yu-you

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for General Scientific Research (B)

    Institution: Tohoku University

    1994 - 1995

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    The inhibitory effects of six kinds of aromatic compounds (benzoate, phenol, catechol, resorcinol, hydroquinone, phloroglucinol) on the acetotrophic methanogenesis were investigated by batch anaerobic toxicity assays. Concomitantly, the degradation characteristics and metabolic pathway were clarified by batch anaerobic toxicity assays using anaerobic sludge acclimatized to phenol. Based on the results, the following conclusions can be made : 1)The relative methanogenic activity remaining after addition of aromatic compounds decreased with an increase in the concentration of all aromatic compounds tested. The concentrations (IC_<50>) of benzoic acid, phenol, catechol, resorcinol, hydroquinone and phloroglucinol resulting in 50% inhibition of methanogenic activity were 49.2,18.6,22.7,27.7,40.0, and 51.6 mmol/L,respectively. 2)For all the phenolic compounds tested, a good correlationship between their inhibition effect and hydrophobicity was observed, and the logarithm of the octanol/water partition coefficient (logP), an indicator of hydrophobicity, was found to be correlated with the inhibition of methanogenic activity, according to the following equation : logIC_<50>=-0.283 logP+1.68 (n=5, r^2=0.953) 3)The effect of phenol on the anaerobic degradation rate of phenol was represented by Haldan equation. The values of k, K_s and K_i as kinetic parameter were 0.096hr^<-1>,1128mg/L and 188mg/L,respectively. Phenol was metabolized primarily into transformed into benzoate. Benzoate was further converted to fatty acids which are subsequently mineralized to acetate and hydrogen. Benzoate and acetate were major metabolites of anaerobic degradation of phenol.

  33. 可視化技術と生物化学的計測法による嫌気性グラニュール汚泥のマイクロ構造の解明

    李 玉友

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 奨励研究(A)

    Institution: 東北大学

    1994 - 1994

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    本研究は、新たに開発する総合的可視化技術を用いてグラニュール内の細菌相構造を明らかにしようとするものであり、次のような研究成果が得られた。 1.グラニュールの元素構成及び細菌相構造を可視化する分析技術を確立できた。 ミクロトームを用いてグラニュールを2-5μm薄く切って、位相差/蛍光顕微鏡でグラニュールの全体構造を観察し、またメタン生成菌特有の補酵素F420とF350の発光特性を利用してメタン生成菌の分布を可視化することができた。また、SEMとTEMを用いてグラニュールの各層における細菌の形態を観察し、グラニュール内部における細菌群の分布を解明する。こうした顕微鏡技術を総合利用してグラニュール内の細菌相構造を可視化できる分析技術を開発することに成功した。 2.ビール工場排水を処理するグラニュールのマイクロ構造を明らかにした。 ビール工場排水を処理するグラニュールを解析した結果、同グラニュールのマイクロ構造は三つの層に分けることができる。表層は主に酸生成細菌、中間層は共生コロニーとMethanothrix,中心部分は主に酢酸資化性メタン生成細菌であるMethanothrixによってそれぞれ構成されている。この微生物の棲み分け現象は糖類排水のメタン発酵における中間代謝産物の蓄積、グラニュール内部への物質移動及び食物連鎖によって説明できる。

  34. 閉鎖性水域からのメタンガスの生成機構と生成量評価に関する研究

    李 玉友

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 奨励研究(A)

    Institution: 東北大学

    1991 - 1991

  35. A Study on Behavior of Substrate Degradation, Interaction of the Anaerobic Bacterial Groups and Upgrading of Process in Anaerobic Digestion

    NOIKE Tatsuya, MIYAHARA Takasi, LI Yu-You

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for General Scientific Research (B)

    Institution: Tohoku University

    1989 - 1991

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    The degradation characteristics of waste activated sludge (WAS), cellulose and the complex sludge in anaerobic digestion were investigated by conducting the batch and continuous experiments at 35゚C by this investigation, the following conclusions were reached : (1) the WAS was difficult to be degraded, compared with the cellulose and the complex sludge which composed of WAS and cellulose ; (2) the digester gas production and percentage of methane from complex sludge were significanthly affected by the composition of sludge ; (3) the rate-limiting step of overall process in anaerobic digestion of WAS and complex sludge, the hydrolysis rate of degradable particulate organic matter is expressed as a linear equation. Through the thermal pretreatment, the anaerobic degradability of WAS and the gas production from WAS were greatly increased, and the retention time necessary for anaerobic digestion was possible to be by 5 days. The optimum pretreatment temperature and pretreatment time for upgrading of anaerobic digestion of WAS were 170゚C and 60 minutes, respectively. Effects of temperature and hydraulic retention time (HRT) on the characteristics of acidogenesis in anaerobic digestion were investigated using anaerobic chemostat-type reactor which soluble starch was fed as a substrate. it was elucidated that the degradation efficiency of substrate, the composition of volatile fatty acids produced and the distribution of acidogenic bacteria and methanogenic bacteria were significantly affected by the temperature and HRT. The effects of substrate composition and high volumetric loading rate on the characteristics of substrate removal and biofilm formation in methanogenic phase of anaerobic two-phase digestion were investigated by using laboratory-scale anaerobic fluidized bed reactor. It was found that the substrate removal efficiencies were increased and the biofilm formation was accelerated by adding a small quantity of yeast extract or glucose to the substrate. While the loading rate increased to 30 kgCOD/m^3 day, the substrate removal efficiencies were also high as 98.8%.

  36. A Developmental Research on Upgrading and Practical Application of Anaerobic Contact Process by Using Two-Phase Anaerobic Process

    NOIKE Tatsuya, OMURA Tatsuo, ENDO Ginro, WATANABE Akira, LI Yu-You

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Developmental Scientific Research (B).

    Institution: Tohoku University

    1989 - 1990

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    A biological sludge bulking phenomenon was observed in experimental anaerobic contact processes (ACP) treating wheat starch waste water, and the bulking was caused by filamentously growing anaerobic microorganisms. There are many kinds of anaerobic microorganisms which grow filamentously, like in activated sludge. One species of anaerobic bacteria caused serious sludge bulking, and it had thin rod (around 0.2 m in width) and long chained morphology. When acidogenically fermented starch waste water was fed to the ACP, the thin rod microorganism was eliminated and the biomass concentration of the methanogenic fermentor was recovered. From these results, it is revealed that acidogenic fermentation of waste water containing raw starch prior to treatment by an ACP is effective to prevent the anaerobic sludge bulking and to keep high organic loading of ACPs. The comparison of one-phase and Two-phase anaerobic digestion processes in the characteristics of substrate degradation and the bacterial population levels was investigated by using the chmostate-type reactor to which starch was fed as substrate when both processes were operated under the same experimental conditions. It was found that the two-phase system was more stable to the change in pH than one-phase system. The methane recovery rates and COD removal rates in the two-phase system increased by 4 to 9% and 3 to 10%, respectively. The population levels of acidogenic bacteria in both system were in the same order, but the number of acetate-utilizing methanogenesis in the methanogenesis of the two-phase system were 2 to 10 times higher than in the one-phase system. The phase separation by high dilution rate would strengthen the ecological relationships among the bacteria rather than weaken or destroy these relationships.

  37. Study on Upgrading of Two-Phase-Anaerobic Digestion Process by Fluidized Bed and Acceleration of Biofilm Formation

    NOIKE Tatsuya, YOU-YU LI

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for General Scientific Research (C)

    Institution: TOHOKU UNIVERSITY

    1987 - 1988

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    The effects of substrate composition on the characteristics of substrate removal and biofilm formation in methanogenic phase of anaerobic two phase digestion were investigated by using laboratory-scale anaerobic fluidized bed reactor with packed media of activated carbon. Three kinds of substrates were used. The first one was composed of acetic acid, propionic acid and butyric acid. A small amount of yeast extract or glucose was added to the second and third ones, respectively. In the experiments in which yeast extract of glucose was added to the mixed acid substrates, the substrate removal efficiencies were higher than that in the experiment using acetic acid substrate. The biofilm formation was accelerated by using the mixed substrate to which yeast extract was added. The mechanism of attachement of anaerobic bacteria to packed media was studied by the observation on the seperative condition of bacteria after n-hexadecane was added to the cultures.

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  1. 低炭素排水処理

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    青少年交流事業

  2. 新規嫌気性ハイブリッドシステムによる抗生物質廃水の処理

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    本研究の目的は、日中共同研究により抗生物質生産廃水の処理とリスク管理に適した省エネルギー・低炭素型の高効率的処理技術を確立することにある

  3. 二相循環式メタン発酵法による廃棄物系バイオマスの資源化に関する研究開発

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    メタン発酵法による廃棄物系バイオマスの資源化に関する研究開発

  4. 嫌気性膜分離メタン発酵法を用いた新しい下水処理システムの基礎的研究

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    嫌気性処理と分離膜を組み合わせることで、新しい省エネルギー型排水処理技術を開発する。

  5. 生物脱硫・メタン生成の融合デザインによる新しい嫌気性排水処理方法の創出

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    本研究は、既に東北大学によって見出されている硫黄酸化細菌が微好気(嫌気に近い条件)・高硫黄負荷環境下で生物脱硫により硫黄を析出させる生物作用を利用し、これまで大きな問題となっていた硫化水素発生の阻害を受けることなく、硫酸含有化学工業廃水の嫌気性処理を行おうとするものである。

  6. 環境技術の研究

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    嫌気性生物処理と脱硫の融合研究

  7. 循環型メタン発酵の高温可溶化による分解率向上と濃縮影響の検討および生物脱硫システムの高性能化の検討

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    窒素含有率の高い廃棄物の循環型メタン発酵技術の開発

  8. 環境技術の研究に関する

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    生物脱硫技術

  9. 環境技術の研究

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    高効率メタン発酵技術

  10. バイオエネルギーの研究

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    メタン発酵

  11. 嫌気性古細菌の造粒化を用いたメタノール系排水の省エネルギー処理の事前調査

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    メタノール系排水の嫌気性処理における古細菌の造粒化を促進させるための室内実験を行うとともに、製紙工場排水に対する適用性を検討する。

  12. 環境リスクに対応した鶏糞と油脂含有農業廃棄物の高温共発酵メタン化処理の開発

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    室内実験装置による油脂含有廃棄物のメタン共発酵要素試験

  13. メタノール系排水の嫌気性処理におけるグラニュール形成の促進方法

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    人工排水を用いてメタノールの嫌気性分解経路およびグラニュール形成の基礎的検討を行う。

  14. 高効率・低コスト可能な新型バイオガス生成技術の開発

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    高効率・低コスト可能な新型バイオガス生成技術

  15. アジア環境マネジメントの研究

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    アジア発展途上国の環境保全現況を調査する

  16. 熱処理・嫌気性消化による下水汚泥の減量化

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