Study on Np behaviors in U-Pu-Np co-extraction process using PARC code

Asakura, Toshihide; Tsubata, Yasuhiro ; Morita, Yasuji ; Nakabayashi, Hiroki ; Nagai, Toshihisa

To contribute to optimize the simple solvent extraction process of NEXT process, PARC-L code simulation calculations of U-Pu-Np co-extraction process were performed, and the extraction/separation behaviors of Np were examined from the viewpoint of oxidation/reduction reaction rate of Np (V)-Np (VI) in relating to the nitrous acid concentration. The time-dependent change of Np valence state distribution in the feed solution was calculated. Assuming the composition of the feed solution as that obtained from the valence calculation, extraction calculations were performed.

Language	:	Japanese
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Meeting title	:	日本原子力学会2007年春の年会
Held date	:	2007/03
Location (city)	:	名古屋
Location (country)	:	日本
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Keywords	:	no keyword
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Registration No. : BB20063229
JAEA Abstracts No. :
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