81929 - Fission-Product Separation Based on Room - Temperature Ionic Liquids

Rogers, Robin D.

Robin D. Rogers (United States)

关键词: Calixarenes;    Separations Chemistry;    Optimization;    Ionic Liquids;    Aqueous Solutions;   

DOI  :  10.2172/835018
RP-ID  :  NONE
RP-ID  :  FG07-01ER63296
RP-ID  :  835018

美国|英语

来源: UNT Digital Library

【 摘 要 】

This project has demonstrated that Sr2+ and Cs+ can be selectively extracted from aqueous solutions into ionic liquids using crown ethers and that unprecedented large distribution coefficients can be achieved for these fission products. The volume of secondary wastes can be significantly minimized with this new separation technology. Through the current EMSP funding, the solvent extraction technology based on ionic liquids has been shown to be viable and can potentially provide the most efficient separation of problematic fission products from high level wastes. The key results from the current funding period are the development of highly selective extraction process for cesium ions based on crown ethers and calixarenes, optimization of selectivities of extractants via systematic change of ionic liquids, and investigation of task-specific ionic liquids incorporating both complexant and solvent characteristics.