Application of ionic liquid as a medium for treating waste contaminated with UF $_{4}$

Ohashi, Yusuke ; Asanuma, Noriko*; Harada, Masayuki*; Wada, Yukio*; Matsubara, Tatsuo; Ikeda, Yasuhisa*

Most of the metal or bed material wastes generated from uranium enrichment facilities or uranium refining and conversion plants are contaminated by uranium fluoride compounds such as UF $_{4}$ . The UF $_{4}$ powder was completely dissolved in BMICl(1-buthyl-3-methylimidazolium chloride). The uranium concentrations of metal waste dropped below the temporary proposed clearance level (1.0 Bq/g) using BMICl. In the cyclic voltammogram of BMICl solution when dissolving UF $_{4}$ , uncoupled reduction and oxidation peaks were observed and the reduction peak was considered to correspond to the reduction of uranyl(VI) + e $^{-}$ uranyl(V) followed by further reduction to UO $_{2}$ .

Language	:	English
Journal	:	Journal of Nuclear Science and Technology
Volume	:	46
Number	:	8
Pages	:	p.771 - 775
Publication Year/Month	:	2009/08
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Paper URL	:	https://doi.org/10.3327/jnst.46.771
DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	no keyword
Research Facility	:	OP-1,2(濃縮工学施設)
Press Release	:
Article of JAEA R&D Review	:	Development of Environmentally-Friendly Technique for Treating Radioactive Waste; Development of Uranium Recovery Technique Using Ionic Liquids[/]
Cooperating Institute	:	東京工業大学; 東海大学

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Registration No. : AA20090349
JAEA Abstracts No. : 37001364
Paper Submission No. : 6377

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