Abstract
In this study, details of cesium extraction from nitrate media using chlorinated cobalt dicarbollide (HCCD) dissolved in the polar phenyl trifluoromethyl sulfone (FS-13) diluent have been examined. It has been verified that Cs+ phase transfer is based solely on cation exchange (H+ for Cs+) that is, that a previously reported nitrate dependency arises from nonideal behavior of solute species. The enthalpy and entropy of the system calculated using appropriate corrections to the van't Hoff analysis are found to be in good agreement with independently measured calorimetry results. Finally, it is demonstrated that synergistic extraction of Cs+ by HCCD and PEG does not occur. Although there is a definite interaction between HCCD and PEG (and it is well established that this interaction is responsible for the extraction of Sr2+), this association is actually antagonistic to the extraction of Cs+.
Original language | English |
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Pages (from-to) | 563-578 |
Number of pages | 16 |
Journal | Solvent Extraction and Ion Exchange |
Volume | 28 |
Issue number | 5 |
DOIs | |
State | Published - 2010 |
Funding
This research was sponsored by the Laboratory Directed Research and Development Program, U.S. Department of Energy, under DOE Idaho Operations Office contract DE-AC07-99ID13727 with Idaho National Laboratory, managed by Battelle Energy Alliance, LLC.
Keywords
- Cesium
- FS-13
- HCCD
- PEG
- SXLSQI mode
- Solvent extraction