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Report No.

Degradation behaviors of the TODGA/SiO$$_{2}$$-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$$_{2}$$ 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$$^{2+}$$ beam and $$gamma$$ 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$$_{2}$$-P adsorbent was investigated by a similar experimental manner.



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