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Report No.

Behavior of fission products in simplified solvent extraction system for uranium, plutonium and neptunium co-recovery

Nakahara, Masaumi; Shibata, Atsuhiro ; Koma, Yoshikazu  

To elucidate the behavior of fission products, two counter current experiments were carried out with a dissolver solution derived from irradiated fast neutron reactor "JOYO" core fuel, one was a single cycle flow sheet using double scrubbing solution with 9 and 1 mol/dm$$^{3}$$ HNO$$_{3}$$ and the other used a Tc scrubbing solution with 10 mol/dm$$^{3}$$ HNO$$_{3}$$. Among fission products, the decontamination behavior of Zr and Tc differed according to HNO$$_{3}$$ concentration of the scrubbing solutions. The decontamination factor of Zr and Tc increase to $$>$$76.8 and $$>$$7.52 with 10 mol/dm$$^{3}$$ HNO$$_{3}$$ in the Tc scrubbing solution. Other fission products such as Cs was well decontaminated and its DF resulted in 10$$^{5}$$.



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