2016 Fiscal Year Final Research Report
Recovery of radioactive substances and long-term stable immobilization using phosphate glass anomaly
| Project/Area Number |
26420844
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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 |
Earth system and resources engineering
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| Research Institution | Kogakuin University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 放射性物質 / ガラス固化 / リン酸塩ガラス異常現象 / マグネシウム化合物 |
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| Outline of Final Research Achievements |
Radioactive substances leaked by an accident of the nuclear power plant which occurred in March in 2011. Techniques for recovering the radioactive substances have been required. We studied adsorption methods as a technique of collection, and vitrification methods of iodine, cesium, and strontium for safekeeping. In this study, adsorption of these ions on magnesium compounds was evaluated, and fixation into glass was tried. The resultant adsorbed magnesium compounds could be vitrified into phosphate glasses. Stability of these obtained glasses against immersion into water, dil. HCl aq., and dil. NaOH aq. was also evaluated, and it was found that the stability was drastically improved by addition of Nb2O5.
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| Free Research Field |
無機材料化学
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