학술논문
Cesium and americium extraction from carbonate-alkaline media with O-substituted p-alkylcalix[8]arenes.
Document Type
Article
Author
Source
Subject
*CESIUM
*AMERICIUM
*CARCINOGENS
*ACTINIDE elements
*TETRACHLOROETHYLENE
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*
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Language
ISSN
0236-5731
Abstract
Cs and Am extraction with perchloroethylene solutions of O-substituted p-alkylcalix[8]arenes (alkyl: tert-butyl, iso-nonyl) from carbonate-alkaline media is studied. Dependence of distribution ratios on pH values of the aqueous phase in the range 11-13.9 and on the nature of functional groups in the calixarene platform is confirmed. Composition of cesium and americium solvates with calix[8]arenes is determined. Tert-butylcalix[8]arene with oxybis(ethane-1,2-diyl) bridging group possesses superior efficiency towards cesium in alkaline media. The most efficient extractants for americium are 'mixed' iso-nonyl- tert-butylcalix[8]arenes with ethane-1,2-diyl and oxybis(ethane-1,2-diyl) bridging groups. [ABSTRACT FROM AUTHOR]