Degradation behaviors of the TODGA/SiO-P adsorbent for extraction chromatography

Miyazaki, Yasunori  ; Watanabe, So  ; Sano, Yuichi   ; Kofuji, Hirohide  ; Takeuchi, Masayuki ; Ishigami, Ryoya*

Extraction chromatography has been employed to separate minor actinides (MAs) from spent nuclear fuel for the purpose of reducing environmental impact. In our strategy, the polymer-coated SiO particle with an extractant is packed in a column and utilized for group separation and/or isolation of the specific element (Am and Cm, for example) from high level liquid waste. The safety use of chromatography was assessed by irradiation to the adsorbent with He beam and ray to simulate the high-level nuclear waste. In this study, we focused on a recently developed extractant TODGA and its degradation behavior on top of the SiO-P adsorbent was investigated by a similar experimental manner.