[1A09-12] Nuclide Adsorption and Separation 2

[1A09] A study for decomposition and recycle of used impregnation adsorbents generated in MA separation recovery process

*Go Shinoda¹, Tsuyosi Arai¹, Kenta Ishizawa¹ (1. Shibaura Inst. of Tech.)

Keywords:Extraction chromatography, TEHDGA, recycle of adosorbent, Fenton method, recycle

The degradation of used TEHDGA impregnated adsorbent using the Fenton method was investigated, and it was confirmed that the decomposition of TEHDGA impregnated adsorbent was strongly dependent on the injection rate of hydrogen peroxide water and the solid-liquid ratio of iron nitrate solution to TEHDGA impregnated adsorbent. It was also shown that the adsorbent can be regenerated by re-impregnation after Fenton treatment.