TRPO萃取锕系元素、铕、锝、锆和铁  

EXTRACTION BEHAVIOR OF ACTINIDES,Eu,Tc,Zr AND Fe BY TRPO

作　　者：陈靖[1] 李春宇[1] 刘秀琴[1] 焦荣洲[1] 

机构地区：[1]清华大学核能技术设计研究院,北京102201

出　　处：《核化学与放射化学》2002年第4期218-222,共5页Journal of Nuclear and Radiochemistry

基　　金：全国优秀博士论文作者专项资金资助项目 ( 199938)

摘　　要：研究了不同浓度三烷基氧膦 (TRPO) /煤油体系萃取铀的能力以及三相出现情况。结果表明 ,5 0 %TRPO/煤油体系在常温下负载 60 g/L铀时不会出现三相 ,并对Np(Ⅳ ) ,Pu(Ⅳ ) ,Am(Ⅲ ) ,Eu(Ⅲ )和Tc(Ⅶ )具有良好的的萃取能力。说明采用该体系能从乏燃料溶解液中萃取回收铀、钚的同时去除次锕系元素和锝 。The extraction capacity of U by different concentrations of TRPO/kerosene and the third-phase phemonena have been studied. 50% TRPO/kerosene can extract 60 g/L U without third-phase at room temperature and the loaded solvent has favorable extraction ability to Np(Ⅳ),Pu(Ⅳ),Am(Ⅲ),Eu(Ⅲ)and Tc(Ⅶ). The results show that 50% TRPO/kerosene possibly can recover U and Pu from spent fule and at the same time remove the minor actinides and Tc.It is necessary to remove Zr before the TRPO extraction because TRPO can strongly extract Zr and the third-phase will occur at the low Zr concentration.

关 键 词：铕 锝 锆 铁 TRPO 萃取 锕系元素 分离 乏燃料后处理 高效废液 处理 

分 类 号：TL941.1[核科学技术—辐射防护及环境保护] TL24