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新抽出剤を用いたMA回収溶媒抽出プロセスにおける物質移動係数の評価

Study on mass transfer kinetics in solvent extraction systems for minor actinides recovery

佐野 雄一   ; 坂本 淳志  ; 竹内 正行 ; 鈴木 英哉*; 松村 達郎  ; 川野邊 一則*; 浅野 周作*; 牧 泰輔*; 前 一廣*

Sano, Yuichi; Sakamoto, Atsushi; Takeuchi, Masayuki; Suzuki, Hideya*; Matsumura, Tatsuro; Kawanobe, Kazunori*; Asano, Shusaku*; Maki, Taisuke*; Mae, Kazuhiro*

マイナーアクチニド(MA)回収用に開発された新抽出剤(TDdDGA, HONTA)を用いた溶媒抽出プロセスを対象に、ランタニド元素の抽出・逆抽出時における物質移動係数を評価した。TDdDGA系では溶媒へのアルコールの添加等により逆抽出時の物質移動係数が増大することやHONTA系では物質移動係数が相対的に小さいこと等を確認した。

The mass transfer coefficients during the extraction and back-extraction of lanthanide elements in the solvent extraction process using new extractants (TDdDGA, HONTA) developed for minor actinides (MA) recovery were evaluated. In the TDdDGA system, it was confirmed that the mass transfer coefficients during back extraction were improved by the addition of alcohol to the solvent, etc., and in the HONTA system, the mass transfer coefficients were relatively small.

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