Local Initiative Hydrogen Production by Aluminum Waste-Hot Spring Water Reaction

2023 Fiscal Year Annual Research Report

• Project/Area Number: 21K21329
• Research Institution: Tohoku University
• Principal Investigator: Alviani Vani・Novita 東北大学, 環境科学研究科, 助教 (80912774)
• Project Period (FY): 2021-08-30 – 2024-03-31
• Keywords: Hydrogen production / Acidic hot spring / Aluminum waste / REE extraction / Techno-economic analysis / REE recovery

Outline of Annual Research Achievements

Hydrogen, with its clean combustion, high energy density, and versatile production from various primary sources, is a promising energy carrier. Current hydrogen production, although cost-effective, relies on fossil fuels, making it nonviable option. By utilizing acidic hot springs and aluminum wastes for local utilization, this study presented a cost-effective method for renewable hydrogen production, as determined by techno-economic assessment. Additionally, the study extended a scheme for REE extraction and recovery through dissolution and carbonation experiments involving the acidic springs and industrial wastes, providing additional benefits for valuable metal recovery, appropriate waste handling, and innovative CO2 solution.

Research Products

• [Journal Article] A sustainable temperature-swing process for CO2 capture and mineralization at below 100 °C using a recyclable chelating agent and bottom ash (2024)
  • Author(s): Wang Jiajie、Maeda Yusuke、Alviani Vani Novita、Kumon Shoichi、Sato Kimitaka、Tsuchiya Noriyoshi、Watanabe Noriaki
  • Journal Title: Journal of Environmental Chemical Engineering Volume: 12 Pages: 112301～112301
  • DOI: 10.1016/j.jece.2024.112301
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Fundamentals, rational catalyst design, and remaining challenges in electrochemical NO reduction reaction (2023)
  • Author(s): Hermawan Angga、Alviani Vani Novita、Wibisono、Seh Zhi Wei
  • Journal Title: iScience Volume: 26 Pages: 107410～107410
  • DOI: 10.1016/j.isci.2023.107410
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Upcycling air pollutants to fuels and chemicals via electrochemical reduction technology (2023)
  • Author(s): Hermawan Angga、Amrillah Tahta、Alviani Vani Novita、Raharjo Jarot、Seh Zhi Wei、Tsuchiya Noriyoshi
  • Journal Title: Journal of Environmental Management Volume: 334 Pages: 117477～117477
  • DOI: 10.1016/j.jenvman.2023.117477
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Advanced direct uses of geothermal springs for hydrogen energy and REEs extraction (2023)
  • Author(s): Vani Novita Alviani, Jiajie Wang, Masaoki Uno, Noriaki Watanabe, Nobuo Hirano, Noriyoshi Tsuchiya
  • Organizer: American Geophysics Union (AGU) Fall Meeting
  • Int'l Joint Research
• [Presentation] A local initiative method to produce hydrogen from acidic hot springs and aluminum waste (case study: Tamagawa hot spring) (2023)
  • Author(s): Vani Novita Alviani, Nobuo Hirano, Noriaki Watanabe, Noriyoshi Tsuchiya
  • Organizer: Water-Rock Interaction WRI-17 & Applied Isotope Geochemistry AIG-14
  • Int'l Joint Research
• [Presentation] Hydrogen production from direct geothermal use (2023)
  • Author(s): Vani Novita Alviani
  • Organizer: Advances in clean energy production and CCUS technologies workshop in 3rd International Conference on Materials Chemistry and Environmental Engineering (CONF-MCEE)
  • Int'l Joint Research / Invited