Details of the Researcher

PHOTO

Luis Jose Salala Santos
Section
Graduate School of Environmental Studies
Job title
Specially Appointed Assistant Professor(Research)

Education 3

  • Tohoku University Graduate School of Environmental Studies Doctoral Course on Environmental Studies for Advanced Society

    2021/10 - 2024/09

  • Tohoku University Graduate School of Environmental Studies Master Course on Environmental Studies for Advanced Society

    2019/10 - 2021/09

  • University of El Salvador Faculty of Engineering and Architecture Mechanical Engineering Bachelor’s

    2009/01 - 2013/12

Research Interests 8

  • El Salvador

  • CFD (fluid simulations)

  • Carbon capture, utilization and storage (CCUS)

  • CO₂ mineralization

  • Chelating agents

  • Geochemical stimulation

  • Volcanic rocks

  • Geothermal energy

Research Areas 1

  • Energy / Earth resource engineering, energy science /

Awards 2

  1. Student award

    2023/09 Japan Formation Evaluation Society Permeability enhancement and void formation in peridotite by dissolution of olivine using chelating agents

  2. Best Student Award

    2021/10 Japan Formation Evaluation Society Permeability enhancement by selective mineral dissolution of rocks in geothermal environments

Papers 11

  1. Biobased biodegradable chelating agents enhance coupled ex situ and in situ carbon dioxide mineralization via peridotite dissolution and wormholing

    Luis Salalá, Noriaki Watanabe, Jiajie Wang, Atsushi Okamoto

    Communications Earth & Environment 2025/08/21

    DOI: 10.1038/s43247-025-02687-2  

  2. Maximizing permeability of fractured volcanic rocks through chelating-agent-assisted and pH-controlled selective mineral dissolution

    Salalá, L., Argueta, J., Wang, J., Watanabe, N., Tsuchiya, N.

    Geothermics 119 2024/05

    DOI: 10.1016/j.geothermics.2024.102949  

    ISSN: 0375-6505

  3. Permeability enhancement and void formation by chelating agent in volcanic rocks (Ahuachapán and Berlín geothermal fields, El Salvador) Peer-reviewed

    Luis Salalá, Ryota Takahashi, Jonathan Argueta, Jiajie Wang, Noriaki Watanabe, Noriyoshi Tsuchiya

    Geothermics 2023/01

    DOI: 10.1016/j.geothermics.2022.102586  

  4. Static friction-coefficient increase in chelating-agent-treated granite saw-cut fractures associated with selective mineral dissolution and void formation

    Lena Muhl, Eko Pramudyo, Luis Salalá, Jiajie Wang, Guido Blöcher, Ingo Sass, Noriaki Watanabe

    Geothermics 2026/12

    DOI: 10.1016/j.geothermics.2026.103826  

  5. Reactive viscous fluid fracturing of volcanic rocks: Chemical weakening offsets viscosity-induced pressure increase

    Eko Pramudyo, Nagi Obata, Luis Salalá, Jiajie Wang, Noriaki Watanabe

    Geothermics 2026/11

    DOI: 10.1016/j.geothermics.2026.103752  

  6. CO2 reactive fracturing creates stress-resistant permeability by coupling fracture generation and chemical roughening

    Luis Salalá, Eko Pramudyo, Kevin Ryano, Kazumasa Sueyoshi, Ryota Tamura, Jiajie Wang, Kiyotoshi Sakaguchi, Sho Ogata, Kazumi Osato, Takuya Teraoka, Noriaki Watanabe

    Communications Earth & Environment 2026/07/02

    DOI: 10.1038/s43247-026-03768-6  

  7. Green chelating agent‒hydrofluoric acid synergy enables sustained mineral dissolution for near-wellbore stimulation in geological CO2 storage formations

    Jiajie Wang, Ryota Tamura, Hitomi Hirano, Masahiko Yagi, Tetsuya Tamagawa, Luis Salalá, Eko Pramudyo, Noriaki Watanabe

    Communications Earth & Environment 2026/06/05

    DOI: 10.1038/s43247-026-03658-x  

  8. Enhancing permeability in deep, medium-temperature granitic geothermal systems via chelating agent stimulation

    Lena Muhl, Luis Salalá, Eko Pramudyo, Jiajie Wang, Ingo Sass, Noriaki Watanabe

    Geoenergy Science and Engineering 2026/02

    DOI: 10.1016/j.geoen.2025.214252  

  9. Unlocking geothermal potential: Activating calcite-filled veins using chelating agents to improve granitic rock permeability

    Lena Muhl, Luis Salalá, Eko Pramudyo, Jiajie Wang, Ingo Sass, Noriaki Watanabe

    Geothermics 2025/09

    DOI: 10.1016/j.geothermics.2025.103356  

  10. Permeability enhancement by CO2 injection and chelating agent stimulation for creating geothermal reservoirs in granite

    Pramudyo, E., Salalá, L., Goto, R., Wang, J., Sueyoshi, K., Muhl, L., Sakaguchi, K., Watanabe, N.

    Geoenergy Science and Engineering 234 2024/03

    DOI: 10.1016/j.geoen.2023.212586  

    ISSN: 2949-8910

  11. Comprehensive assessment of four volcano-hosted geothermal fields with relation to tectonics and faults in El Salvador

    Salalá, L., Argueta, J., López, N., Aparicio, O., Martínez, D., Santos, P., Quezada, A., García, O., Erazo, J., Yamagishi, H., Tsuchiya, N.

    Geothermics 117 2024/02

    DOI: 10.1016/j.geothermics.2023.102880  

    ISSN: 0375-6505

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Presentations 18

  1. Permeability enhancement of volcanic rocks using HF-enhanced biobased chelating fluids in hydraulic fracturing

    Kevin Ryano, Luis Salalá, Eko Pramudyo, Nagi Obata, Jiajie Wang, Noriaki Watanabe

    World Geothermal Congress 2026 2026/06/10

  2. CO₂ reactive fracturing improves permeability retention under effective stress via fracture-confined chemical roughening

    Luis Salalá, Eko Pramudyo, Kevin Ryano, Kazumasa Sueyoshi, Ryota Tamura, Jiajie Wang, Kiyotoshi Sakaguchi, Sho Ogata, Kazumi Osato, Takuya Teraoka, Noriaki Watanabe

    Japan Geoscience Union 2026 2026/05/28

  3. Chelating-agent–driven mineral reactivity based on laboratory evidence across applied systems Invited

    Luis Salalá

    Water Dynamics 2026 2026/01/28

  4. CO₂ reactive fracturing of volcanic geothermal reservoirs

    Luis Salalá, Eko Pramudyo, Kevin Ryano, Kazumasa Sueyoshi, Kiyotoshi Sakaguchi, Noriaki Watanabe, Sho Ogata, Kazumi Osato, Takuya Teraoka

    Geothermal Research Society of Japan 2025 2025/10/21

  5. Permeability enhancement in fractured peridotite with chelating agents

    Luis Salalá, Noriaki Watanabe, Jiajie Wang, Atsushi Okamoto

    Japan Geoscience Union 2025 2025/05/30

  6. Numerical model for permeability enhancement prediction of igneous rocks stimulated with chelating agents under geothermal conditions

    Luis Salalá, Noriaki Watanabe, Noriyoshi Tsuchiya

    Japan Geoscience Union 2024 2024/05/30

  7. Permeability enhancement mechanisms of igneous rocks with chelating agents under geothermal conditions through numerical modeling.

    Luis Salalá, Noriaki Watanabe, Noriyoshi Tsuchiya

    Geothermal Research Society of Japan 2023 2023/11/15

  8. Use cutting-edge exploration technology to find geothermal resources and promote the use of geothermal energy! Invited

    Luis Salalá

    Tsukuba Conference 2023 2023/09/26

  9. Permeability enhancement and void formation in peridotite by dissolution of olivine using chelating agents

    Luis Salalá, Noriaki Watanabe, Jiajie Wang, Atsushi Okamoto, Noriyoshi Tsuchiya

    Japan Formation Evaluation Symposium 2023 2023/09/13

  10. Numerical model of permeability enhancement of volcanic rocks by the application of chelating agents under geothermal conditions

    Luis Salalá, Noriaki Watanabe, Noriyoshi Tsuchiya

    Water Rock Interaction 2023 2023/08/22

  11. Dissolution rate of minerals in geothermal reservoir rocks using acidic and alkaline GLDA solution

    Luis Salalá, Noriaki Watanabe, Atsushi Okamoto, Noriyoshi Tsuchiya

    Water-Rock Interaction 2023 2023/08/18

  12. Evaluation of aperture structure and fluid flow using numerical modeling in volcanic rocks stimulated by a chelating agent under geothermal conditions

    Luis Salalá, Noriaki Watanabe, Noriyoshi Tsuchiya

    Japan Geoscience Union 2023 2023/05/20

  13. pH dependence of mineral dissolution and permeability enhancement of intermediate to basic volcanic rocks by chelating agent flooding under geothermal conditions

    Luis Salalá, Jonathan Argueta, Noriaki Watanabe, Noriyoshi Tsuchiya

    European Geoscience Union (EGU) 2023 2023/04/28

  14. Determination of dissolution rate of minerals in an andesitic rock by flow experiments using acidic and alkaline GLDA solution

    Luis Salalá, Noriaki Watanabe, Noriyoshi Tsuchiya

    Geothermal Research Society of Japan 2022 2022/11/10

  15. Numerical model of permeability enhancement by chelating chemical stimulation in geothermal reservoirs

    Luis Salalá, Jonathan Argueta, Noriaki Watanabe, Noriyoshi Tsuchiya

    Geothermal Rising Conference 2022 2022/08/30

  16. Selective mineral dissolution in high-temperature volcanic rocks by weakly acidic chelating agent solution

    Luis Salalá, Noriaki Watanabe, Noriyoshi Tsuchiya

    Geothermal Research Society of Japan 2021 2021/10/29

  17. Permeability enhancement by selective mineral dissolution of rocks in geothermal environments

    Luis Salalá, Ryota Takahashi, Noriaki Watanabe, Kengo Nakamura, Noriyoshi Tsuchiya, Takeshi Komai

    Japan Formation Evaluation Symposium 2021 2021/10/01

  18. Selective mineral dissolution and permeability enhancement of fractured volcanic rocks by chelating agent flooding in geothermal environments

    Luis Salalá, Noriaki Watanabe, Kaori Takahashi, José Erazo, Noriyoshi Tsuchiya

    European Geoscience Union (EGU) 2021 2021/04/28

Show all Show first 5

Research Projects 1

  1. Wormhole formation characteristics in peridotite by green chelating agents and their application for CO2 storage and H2 production

    Luis Salalá

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Institution: Tohoku University

    2026/04 - 2029/03

Media Coverage 1

  1. Tohoku University develops new CO2 sequestration technology using mantle-derived peridotite bodies

    2025/09

    Type: Newspaper, magazine