TBP-TRPO/煤油萃取HNO_3、UO_2~(2+)、Pu(Ⅳ)、Am~(3+)、TcO_4~-和Cs~+的研究

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

摘要: 研究了磷酸三丁酯 (TBP) 三烷基氧膦 (TRPO) /煤油对HNO3 、UO2 2 + 、Pu(Ⅳ )、Am3 + 、TcO4 -和Cs+ 的萃取 ;探讨了该体系对UO2 2 + 和硝酸的负载容量 ;分析了该体系对Am3 + 和TcO4 -的协萃现象 ,并进行了草酸反萃体系中Pu(Ⅳ )的研究。

Abstract: 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.