[3B09-12] Nuclide Adsorption & Separation 3

[3B11] Basic Research Programs of Vitrification Technology for Waste Volume Reduction

(91)Improved TEHDGA column flow for MA + Ln co-recovery

*Kenta Ishizawa¹, Tadashi Akuzawa¹, Fukuka Kida¹, Tsuyoshi Arai¹, Sou Watanabe², Yuichi Sano², Masayuki Takeuchi² (1. Shibaura Inst. of Tech., 2. JAEA)

Keywords:high-level radioactive liquid waste, minor actinides, Extraction chromatography, TEHDGA

Regarding the TEHDGA column for MA + Ln co-recovery, the effect of using a complex-forming agent was investigated with the aim of improving the decontamination coefficient of the platinum group elements of FP elements and Mo and Zr.
It was confirmed that by supplying an aqueous solution of EDA and EDTA as a cleaning liquid, the adsorbed FP element was washed and removed, and the DF was improved.