Abstract
Tc extraction and separation experiments were performed basing on PUREX technique with using spent UO2 fuel with burn-up of 44 GWd t-1. The experimental results were examined with performing calculations by a simulation code ESSCAR (Extraction System Simulation Code for Advanced Reprocessing). It was demonstrated that Tc can be extracted almost quantitatively from a dissolver solution and that extracted Tc also can be recovered almost quantitatively by scrubbing. Further, it is clearly presented with the calculation results of ESSCAR that Tc extraction mechanism is dominated by the synergistic effect of Zr and U.
