Development of MA separation process with TEHDGA/SiO-P for an advanced reprocessing

Horiuchi, Yusuke; Watanabe, So  ; Sano, Yuichi   ; Takeuchi, Masayuki ; Kida, Fukuka*; Arai, Tsuyoshi*

Applicability of tetra2-ehylhexyl diglycolamide (TEHDGA) impregnated adsorbent for minor actinide (MA) recovery from high level liquid waste (HLLW) in extraction chromatography technology was investigated through batch-wise adsorption and column separation experiments. Distribution ratio of representative fission product elements were obtained by the batch-wise experiments, and TEHDGA adsorbent was shown to be preferable to TODGA adsorbent for decontamination of several species. All Ln(III) supplied into the TEHDGA adsorbent packed column was properly eluted from the column, and the applicability of the adsorbent was successfully showed by this study.