Unique extraction behavior of americium and curium in a system of TBP and calcium nitrate hydrate melt

Okude, Genki*; Fujii, Toshiyuki*; Uehara, Akihiro*; Sekimoto, Shun*; Minato, Kazuo ; Yamana, Hajimu*

Extraction of Am(III) and Cm(III) between tri--butyl phosphate solution and molten calcium nitrate hydrate Ca(NO $_{3}$ ) $_{2}$ -H $_{2}$ O was investigated radiochemically. In the range of water content = 3.5-8.0, the distribution ratio was found to increase with the decrease of water activity. The dependence of the distribution ratios on the water activity in the hydrate melt changes at around log $_{rm H2O}$ = -0.4, which corresponds to = 5.0. The extraction behavior of Am(III) and Cm(III) was systematically discussed with the reported data of trivalent lanthanides.

Language	:	English
Journal	:	IOP Conference Series; Materials Science and Engineering
Volume	:	9
Number	:
Pages	:	p.012067_1 - 012067_7
Publication Year/Month	:	2010/05
Meeting title	:	International Conference on Actinides 2009
Held date	:	2009/07
Location (city)	:	San Francisco
Location (country)	:	U.S.A.
Patent information	:
PDF	:
Paper URL	:	https://doi.org/10.1088/1757-899X/9/1/012067
DOI for research data	:
Keywords	:	no keyword
Research Facility	:
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Article of JAEA R&D Review	:
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Registration No. : BB20092945
JAEA Abstracts No. : 38000853
Paper Submission No. : 7489

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