2006 Fiscal Year Final Research Report Summary
Green Hydrogen Production from Waste Metal
| Project/Area Number |
17360365
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Metal making engineering
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| Research Institution | HOKKAIDO UNIVERSITY |
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Principal Investigator |
AKIYAMA Tomohiro Hokkaido Univ., Center for Advanced Research of Energy Conversion Materials., prof., エネルギー変換マテリアル研究センター, 教授 (50175808)
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| Co-Investigator(Kenkyū-buntansha) |
OKINAKA Noriyuki Hokkaido Univ., Center forAdvanced Research of Energy Conversion Materials., inst, エネルギー変換マテリアル研究センター, 助手 (20250483)
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| Project Period (FY) |
2005 – 2006
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| Keywords | Waste aluminum / Hydrogen production / High-pressure hydrogen / Metal hydride / Exergy / Combustion synthesis / Sub-critical water / Aluminum hydroxide |
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| Research Abstract |
An innovative environment-friendly hydrolysis process for recycling waste aluminum with the generation of high-pressure hydrogen has been proposed and experimentally validated. The effect of the concentration of sodium hydroxide solution on hydrogen generation rate was mainly examined. In the experiments, distilled water and aluminum powder were placed in the pressure-resistance reactor made of Hastelloy, and was compressed to a desired constant water pressure using a liquid pump. The sodium hydroxide solution was supplied by liquid pump with different concentrations (from 1.0 to 5.0 mol/dm3) at a constant flow rate into the reactor by replacing the distilled water and the rate of hydrogen generated was measured simultaneously. The liquid temperature in the reactor increased due to the exothermic reaction. Therefore, a high-pressure hydrogen was generated at room temperature by mixing waste aluminum and sodium hydroxide solution. As the hydrogen compressor used in this process consumes less energy than the conventional one, the generation of hydrogen having a pressure of almost 30 MPa was experimentally validated together with aluminum hydroxide a useful by-product.
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Research Products
(22 results)
