[3H05-08] MA recovery 2

[3H06] 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

*Masaaki Yoshida¹, Shuhei Nemoto¹, Midori Nagase¹, Tsuyoshi Arai¹, Tatsuya Emori², Keisuke Morita², Yasutoshi Ban², Sou Watanabe², Yuichi Sano², Shigeru Kunii³ (1. Shibaura Inst. of Tech., 2. JAEA, 3. Chemicrea Inc. )

Keywords:minor actinides , extraction chromatography, NTA-amide

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.