STUDY ON EXTRACTION OF HNO_3,UO_2~(2+) ,Pu(Ⅳ),Am~(3+), TcO_4~- AND Cs~+ WITH TBP -TRPO/KEROSENE

The extraction of TBP(tributyl phosphate) TRPO(mixed trialkyl phosphine oxide)/kerosene for HNO 3,UO 2 2+ ,Pu(Ⅳ),Am 3+ ,TcO 4 - and Cs + is conducted. The distribution ratios of HNO 3 and these ions are determined. The loading capacities of the binary system for both UO 2 2+ and HNO 3 are studied. The experiments demonstrate that the binary system has no synergistic extraction effect for Am 3+ and two different effects for TcO 4 -. The Pu(Ⅳ) which extracted in the binary system can be stripped by 0.6 mol/L H 2C 2O 4 efficiently.