2013 Fiscal Year Final Research Report
Development of regenerative polymer adsorbent for reducing volume of radiocesium from waste zeolite
| Project/Area Number |
24760720
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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 | Japan Atomic Energy Agency |
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Principal Investigator |
MOTOKAWA Ryuhei 独立行政法人日本原子力研究開発機構, 原子力科学研究部門 量子ビーム応用研究センター, 研究副主幹 (50414579)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 保健物理 / 環境安全 / 除染 |
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| Research Abstract |
We have developed a derivative of benzo-crown ether, mono-acetyl substituted dibenzo-20-crown-6-ether (ace-DB20C6), which exhibits high selectivity for cesium in comparison with sodium and potassium in aqueous solution. Ace-DB20C6 was fixed on the surface of polymer particles or inside the pores of silica gel particles to use as an adsorbent for radioactive cesium ions. Moreover, we elucidated the coordination structure of the complex of ace-DB20C6 with cesium and the interaction between them, through small-angle neutron scattering observation and density functional theory (DFT) calculation, revealing that the special selectively for cesium by ace-DB20C6 arises from the interaction between the pi-orbitals of the two benzene rings and the d orbital of cesium.
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[Presentation] 粘土鉱物中のセシウムの吸着構造の解明2014
Author(s)
塩飽秀啓, 矢板毅, 鈴木伸一, 小林徹, 宮崎有史, M.R. Awual, 元川竜平, 岡本芳浩, 松村大樹, 吉井賢資, 西畑保雄, 池田隆司, 寺岡有殿, 下山巌, 小西啓之, 片山芳則
Organizer
第27回日本放射光学会年会・放射光科学合同シンポジウム
Place of Presentation
広島国際会議場
Year and Date
2014-01-13
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[Presentation] 福島環境回復を目指して;廃棄物減容化のためのCs脱離機構解明と脱離法の開発2013
Author(s)
塩飽秀啓, 矢板毅, 鈴木伸一, 小林徹, 宮崎有史, M.R. Awual, 元川竜平, 岡本芳浩, 松村大樹, 吉井賢資, 西畑保雄, 池田隆司, 寺岡有殿, 下山巌, 小西啓之, 片山芳則
Organizer
SPring-8シンポジウム2013
Place of Presentation
京都大学宇治おうばくプラザ
Year and Date
2013-09-07
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