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超臨界流体を用いた全アクチニド一括分離システムの開発,8; 常圧条件下における未照射MOXを用いた直接抽出試験

Development of actinides co-extraction system with direct extraction process using supercritical fluid, 8; Direct extraction test of unirradiated MOX fuel under ordinary pressure

紙谷 正仁 ; 三浦 幸子 ; 佐野 雄一  ; 小山 智造; 青木 和夫*; 澤田 佳代*

Kamiya, Masayoshi; Miura, Sachiko; Sano, Yuichi; Koyama, Tomozo; Aoki, Kazuo*; Sawada, Kayo*

常圧条件下において未照射MOX燃料を用いた直接抽出試験を実施した。使用する溶媒の組成が適切であれば、TBPによってU, PuだけでなくAmも同時に抽出可能であることが確認できた。同時抽出は溶媒中のTBP濃度,酸濃度,水分濃度などの微妙なバランスのうえで成立していることが示唆された。

The direct extraction test of the unirradiation MOX fuel was executed under ordinary pressure. If the composition of the solvent used was appropriate, it was able to be confirmed that not only U and Pu but also Am was extractive at the same time by TBP. It was suggested to have approved the extraction simultaneously on slight balances of the concentration of TBP, acid, and water in the solvent.

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