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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

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

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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