[2A06-09] Nuclide Adsorption and Separation 4

[2A07] Basic Research Programs of Vitrification Technology for Waste Volume Reduction

(106) Development of HONTA column flow for MA / Ln separation

*Keisuke Masumura¹, Tadashi Akuzawa², Tsuyoshi Arai¹, Sou Watanabe², Yuichi Sano², Masayuki Takeuchi² (1. Shibaura Inst. of Tech., 2. JAEA)

Keywords:high-level radioactive liquid waste, minor actinides, Extraction chromatography, HONTA

In this study, an efficient separation scheme for MA(III) and Ln(III) was investigated for HONTA-impregnated adsorbent. The test results suggest the possibility of an efficient separation scheme by selectively adsorbing MA(III) on HONTA-impregnated adsorbent at 0.2 M, where there is a significant difference in adsorption distribution coefficient, and eluting MA(III) with a high concentration of nitric acid solution.