Studies on the separation treatment of high-level liquid waste by bisamide podand(Ⅰ):Extraction and separation of An(Ⅲ)from Ln(Ⅲ)  

作　　者：Li-Kun Liu Shu-Bao Xie Hong-Bin Lv Hu Zhang Guo-An Ye 

机构地区：[1]China Institute of Atomic Energy,Beijing 102413,China

出　　处：《Chinese Chemical Letters》2022年第7期3439-3443,共5页中国化学快报（英文版）

摘　　要：A process for actinide(Ⅲ)and lanthanum(Ⅲ)extraction separation from high-level liquid waste(HLLW)was proposed,with N,N,N’,N’-tetraoctyl diglycolamide(TODGA)as the extractant,tri-n–butyl phosphate(TBP)as the phase modifier and 2,6-bis[1-(propan-1-ol)-1,2,3-triazol-4-yl]pyridine(PyTri-Diol or PTD)as hydrophilic stripping agent.This‘hot test’was successfully carried out,achieving 99.92%removal of americium-241(^(241)Am)with a separation factor SF(Eu/Am)of 3.8×10^(3)in the actinide(Ⅲ)product solution.The results show that bisamide podand extractants can effectively realize the extraction and separation of actinide(Ⅲ)and lanthanum(Ⅲ)from Chinese commercial HLLW and thus have a bright practical application potential for the treatment of commercial HLLW.

关 键 词：Bisamide podand High-level liquid waste ACTINIDES LANTHANIDES Extraction separation 

分 类 号：TQ133.3[化学工程—无机化工] TQ133.4[环境科学与工程—环境工程] X703