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合理的なMA回収工程の構築に向けた溶媒抽出/低圧損抽出クロマトグラフィを組み合わせたハイブリッド型プロセスの開発,6; MA/Ln分離用吸着材の吸着・溶離挙動評価

Hybrid process combining solvent extraction and low pressure loss extraction chromatography for a reasonable MA recovery, 6; Evaluation of adsorption and elution behavior of adsorbent for MA/Ln separation

吉田 正明*; 根本 脩平*; 永瀬 緑*; 新井 剛*; 江森 達也; 森田 圭介 ; 伴 康俊  ; 渡部 創  ; 佐野 雄一  ; 国井 茂*

Yoshida, Masaaki*; Nemoto, Shuhei*; Nagase, Midori*; Arai, Tsuyoshi*; Emori, Tatsuya; Morita, Keisuke; Ban, Yasutoshi; Watanabe, So; Sano, Yuichi; Kunii, Shigeru*

本研究では、各種NTAアミド抽出剤を担持させた吸着材の模擬核種の吸着特性を検討した。本試験の結果から、HONTA含浸吸着材は硝酸濃度0.001-0.1MにおいてLn(III)に対し高い吸着分配係数を示した。また、何れの含浸吸着材においても速やかに吸着平衡に達した。また、含浸吸着材からの抽出剤溶出試験の結果から抽出剤及びSty/DVBの溶出は確認されなかった。本会では各種NTA吸着材を用い抽出クロマトグラフィ法の適用性を調査したので報告する。

In this study, we investigated the adsorption characteristics of simulated nuclides of adsorbents carrying various NTA amide extracts. From the results of this test, It has become clear that HONTA-impregnated adsorbent showed a high adsorption distribution coefficient with respect to Ln (III) at a nitric acid concentration of 10$$^{-3}$$ - 10$$^{-2}$$ M. It has also revealed that all elements quickly reached adsorption equilibrium. In addition, the elution of the extractant and Sty / DVB was not occurred from the results of the extractant elution test from the impregnated adsorbent. We discuss the applicability of the extraction chromatography method using various NTA adsorbents.

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