2021 Fiscal Year Final Research Report
Recovery of valuable metals by biosorption technique based on the acidic and basic properties of unused marine resources
Project/Area Number |
19K05113
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 26060:Metals production and resources production-related
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Research Institution | Hakodate National College of Technology |
Principal Investigator |
Terakado Osamu 函館工業高等専門学校, 物質環境工学科, 准教授 (90402487)
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Co-Investigator(Kenkyū-buntansha) |
葛原 俊介 仙台高等専門学校, 総合工学科, 准教授 (60604494)
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Project Period (FY) |
2019-04-01 – 2022-03-31
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Keywords | Adsorption / Kelp / Sea urchin |
Outline of Final Research Achievements |
The selectivity of divalent metal ions uptake from mixed solutions was investigated for kelp holdfasts. The adsorption selectivity of maximum 10-fold difference was found according to the Irving-Williams series, indicating the possibility of metal ion separation. As for sea urchin shells, it was found that not only various metal ions can be immobilized, but also anions can be immobilized. The ability of fluorine fixation at high temperature treatment was also clarified. Furthermore, the carbonization of kelp holdfasts resulted in the formation of activated carbon with a high specific surface area.
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Free Research Field |
リサイクル工学
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Academic Significance and Societal Importance of the Research Achievements |
研究代表者所属機関のある北海道の主要海産物である昆布は水揚げ量が国内の97%、ホタテは同99%、ウニは同55%と極めて高い水準にある。これらの流通・加工に伴い、膨大な廃棄物が出てくることから、その有効利用を模索した本研究成果の社会的意義は大きいと考える。今後、排水処理における金属イオン回収プロセスへの社会実装につなげるために、プロセスコストなどの検討をするだけでなく、金属生産業・漁業者との新たな連携を模索する。
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