| Project/Area Number |
21K21329
|
|---|
| Research Category |
Grant-in-Aid for Research Activity Start-up
|
| Allocation Type | Multi-year Fund |
|---|
| Review Section |
1101:Environmental analyses and evaluation, environmental conservation measure and related fields
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2021-08-30 – 2024-03-31
|
| Project Status |
Completed (Fiscal Year 2023)
|
| Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
|
|---|
| Keywords | Hydrogen production / Acidic hot spring / Aluminum waste / REE extraction / Techno-economic analysis / REE recovery / Hydrogen / Hot spring / Geothermal / Life cycle analysis / hydrogen production / aluminum waste / acidic hot spring / geothermal / Life cycle assessment |
|---|
| Outline of Research at the Start |
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.
|
| 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.
|
