| 研究開始時の研究の概要 |
This research outlines a reaction of aluminum waste materials and hot springs with the following considerations:
(1) Producing hydrogen at the low hydrothermal reaction,
(2) Applying environmentally-friendly oxide removal techniques,
(3) Investigating impurities such as As and H2S from the reaction, and
(4) Conducting a life cycle assessment of the overall processes to impact categories such as carbon emission, energy requirement, cost, and social analysis, etc.
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| 研究実績の概要 |
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.
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