2013 Fiscal Year Final Research Report
Development of column electrolysis with biofilm for removal and recovery of radionuclides
| Project/Area Number |
24760719
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Nuclear engineering
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| Research Institution | Tokyo University of Technology |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | バイオフィルム / 亜セレン酸 / カラム電極 |
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| Research Abstract |
We developed biofilm-modified column electrolysis for rapid removal of radioactive selenium-79. We found that biofilms of Shewanell putrefaciens, which is an iron-reducing microorganism, can reduce selenite to elemental selenium and immobilize it on the biofilms. We established a method for making biofilms of S. putrefaciens on GC fiber electrodes of a column electrolysis cell. Flow electrolysis of a selenite solution with the biofilm-modified GC fiber electrodes was conducted. As the results, selenite was remorved from the solution as elemental selenium. The results indicating a possibility of the rapid removal of selenium.
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