| Project/Area Number |
15K06537
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Properties in chemical engineering process/Transfer operation/Unit operation
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| Research Institution | Akita University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Keywords | 電気透析 / 1価陽イオン選択性膜 / バイポーラー膜 / コバルト / リチウム / 分離 / バイポーラ―膜 / イオン交換膜 / 選択分離 / リサイクル |
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| Outline of Final Research Achievements |
This research examined separation of Li/Co and regeneration of nitric acid solution by use of electrodialysis set a monovalent selective cation-exchange membrane, NEOSEPTA CIMS, and a water split bipolar membrane, NEOSEPTA BP-1E. In the electrodialysis with a monovalent selective cation-exchange membrane, the permeation of cobalt ions to lithium ions greatly decreased, so the permselectivity coefficient was remarkably high, and ranged from 3 to 29 under the conditions studied. The nitric acid solution also regenerated by electrodialysis using water split bipolar membrane. These results indicated that electrodialysis using monovalent cation selective bipolar membrane and water split bipolar membrane is effective for the regeneration of nitric acid and selective separation of lithium and cobalt.
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