[3K01-07] Nuclide Separation

9:45 AM - 10:00 AM JST(12:45 AM - 1:00 AM UTC)

[3K02] Development of regeneration technology for used extractant-impregnated adsorbent

*Akihiro Ogawa¹, Kenta Katsuki¹, Tsuyoshi Arai¹, Yasunori Miyazaki², Sou Watanabe², Yuichi Sano², Masayuki Takeuchi² (1. Shibaura Inst. of Tech., 2. JAEA)

Keywords:

MA(III) separation,Extraction chromatography,Extractant-impregnated adsorbent,TEHDGA,n-dodecane

To regenerate extractant-impregnated adsorbent used in the MA(III) separation process from High-Level radioactive Liquid Waste (HLLW), the stripping and re-impregnation of the extractant was performed. The results of this study showed that shaking the TEHDGA-impregnated adsorbent with n-dodecane resulted in the stripping of about 80% of the extractant, and reimpregnation with the same solvent was confirmed to activate the adsorption performance.