nPr-BTP/nitrobezene 추출 계에 의한 악티나이드(III)의 선택적 분리

Selective Separation of Actinide(III) by a nPr-BIP/introbezene Extraction System

Eil-Hee Lee, Jae-Kwan Lim, Dong-Yong Chung, Han-Beom Yang, Kwang-Wook Kim

Abstract

A selective separation of Actirlide(III) by a nPr-BTP/nitrobezene extraction system was studied. The nPr-BTP (2.6-Bis-(5.6-n-propyl-1.2.4-triazin-3-yl)-pyridine) of a environmentally -friendly CHN type was self-synthesized and its compatability with diluent and stability with nitric acid were investigated. At the 0.1M nPr-BTP/nitrobenzene-1M and O/A=2, extraction yields of Am used as a representative of Actinide(III) and Eu were about 85% and 8%, respectively, and the other RE elements such as Nd, Ce and Y were extracted less than 3% (separation factor of Am and Eu was about 60). Thus, there was no problems in the selective extraction of Actinide(III) from RE. The stripping yield of Am with 0.05M at O/A= 1, however, was about 43% and the maximum stripping yield was 65% at O/A=0.3. It is necessary to develop the stripping system including the stripping agent instead of nitric acid solution.

Key Words : Actinide(III), Rare Earth elements, BTP(Bis triazinyl pyridine), Solvent extraction 악티나이드(III), 화토류원소, BTP 추출제, 용매추출, 선택적 분리

Reference

JNFCWT

Online Submission

Korean Radioactive
Waste Society (KRS)

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