2014 Fiscal Year Final Research Report
Removal of radioactive substance by several forms of hydroxyapatite (powder, porous body, and thin film)
| Project/Area Number |
24510111
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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 |
Environmental technology/Environmental materials
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| Research Institution | Ibaraki University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 環境材料 / ハイドロキシアパタイト / セシウム / ストロンチウム |
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| Outline of Final Research Achievements |
The adsorption of Strontium (Sr), cesium (Cs) and iron (Fe) on several forms of hydroxyapatite (powder, porous body and thin film) was evaluated to explore the possibility of HA as an absorbent for Sr removal and an absorbent aid for zeolites. The Si doped HA (SiHA) was also prepared to obtain a larger specific surface area. More than 60% of Sr was removed by the HA and the SiHA. The Cs adsorption ratio on the zeolite was decreased when the Fe ions were included in the Cs solution. The decreased ratio on the zeolite was recovered by adding the HA and the SiHA. The porous HA was prepared in a sintering atmosphere, and showed a 5 % of Sr removal. The HA films with 1 μm thick were fabricated by sputtering technique. The ratio of Sr adsorption on the HA films increased with the surface area of the HA films.
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| Free Research Field |
生体・環境材料
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