Uptake of metal ions by a new chelating ion-exchange resin. Part 1. Acid dependencies of actinide ions
Journal Article
·
· Solvent Extraction and Ion Exchange
- Argonne National Lab., IL (United States)
- Univ. of Tennessee, TN (United States)
The uptake of several actinide ions [U(VI), Pu(IV), Np(IV), Th(IV)] and Am(III) from nitric and hydrochloric acid solutions, and of U(VI) from near-neutral solutions by the new chelating ion-exchange resin, Diphonix, has been investigated. Diphonix is a polyfunctional resin containing sulfonic and gemdiphosphonic acid groups chemically bonded in a styrene-divinylbenzene polymeric network. Comparison of the acid dependencies of the actinide ions uptake measured with Diphonix with those obtained using a commercial sulfonic -type resin and a resin containing both sulfonic and monophosphonic acid groups, has shown that Diphonix binds the actinides via a different kind of chemical interaction, involving the formation of chelate complexes through the phosphoryl groups of the gem-diphosphonic acids. As a consequence, Diphonix is superior to other resins in extracting actinide ions from very acidic solutions. A better performance of Diphonix is also observed with the uptake of uranium from neutral solutions. Conditions for efficient stripping of actinide species from the resin have been found. 22 refs., 7 figs., 5 tabs.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 171537
- Journal Information:
- Solvent Extraction and Ion Exchange, Journal Name: Solvent Extraction and Ion Exchange Journal Issue: 5 Vol. 11; ISSN 0736-6299; ISSN SEIEDB
- Country of Publication:
- United States
- Language:
- English
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