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高濃度TBP溶媒を用いた溶媒抽出によるMA(III)・Ln(III)共回収プロセスの構築に向けた基礎研究

Basic research for construction of MA (III)-Ln (III) co-recovery process by solvent extraction at high TBP concentration

岩本 響*; 佐藤 広盛*; 新井 剛*; 渡部 創  ; 佐野 雄一   

Iwamoto, Hibiki*; Sato, Hiromori*; Arai, Tsuyoshi*; Watanabe, So; Sano, Yuichi

安価で選択的抽出性を持つリン酸トリブチル(TBP)を抽出剤として、硝酸濃度,TBP濃度や塩析剤が希土類元素Ln(III)の抽出に及ぼす影響を調査した。本研究の成果から硝酸濃度,硝酸イオン濃度を制御することでLn(III)を選択して抽出できることが示唆された。

We investigated the effects of nitric acid, TBP and salting out reagent concentrations on the rare earth element (Ln (III)) extraction using TBP, which is inexpensive and has selective extractability. It was suggested that Ln (III) can be extracted by controlling the nitric acid and nitrate ion concentrations.

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