日本原子力学会和文論文誌
Online ISSN : 2186-2931
Print ISSN : 1347-2879
ISSN-L : 1347-2879
論文
先進湿式法再処理の晶析工程における Cs 挙動把握のための模擬溶解液を用いた基礎試験
柴田 淳広矢野 公彦紙谷 正仁中村 和仁鷲谷 忠博近沢 孝弘菊池 俊明
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2009 年 8 巻 3 号 p. 245-253

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  The behavior of Cs in the U crystallization of an advanced aqueous reprocessing system was investigated. A beaker-scale U crystallization experiment was carried out with a certain simulated dissolver solution. Results show that the possibility of the generation of CsNO3, Cs2UO2(NO3)4 or Cs-FP complex salt is small. A precipitation experiment of Cs-U(IV) complex salts was also carried out with a nitrate solution of U(IV) and Cs. It was found that Cs2U(NO3)6 precipitates at an acidity higher than 5 mol dm−3. It is considered that Cs2Pu(NO3)6 precipitates can be generated in a U crystallization process under a specific solution condition.

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