Highly selective inorganic crystalline ion-exchange material for Sr{sup 2+} in acidic solutions
- Sandia National Lab., Albuquerque, NM (United States)
We report a novel antimony titanate ion exchange material, stable in highly acidic conditions and selective to strontium against competing cations, with possible applications at Defense Waste Sites. Its development was based on good selectivity for Cs and Sr by the CSTs and literature information on the ion exchange properties of antimony compounds. This new material has been tested for the selective removal of parts per million level concentrations of Sr{sup 2+} ions from solutions with a pH in the range of 1 M HNO{sub 3} tO 5.7 M Na{sup +}/0.6 M OH{sup -} (with the most important results in the highly acidic regimes). This doped titanate has been characterized with an array of techniques, including equilibrium distribution coefficient (K{sub d}) determinations over a wide pH range, power X-ray diffraction, TEM, BET, direct-current plasma (DCP), and thermal analyses. 13 refs., 2 figs., 2 tabs.
- Research Organization:
- Sandia National Laboratory
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 437389
- Journal Information:
- Environmental Science and Technology, Journal Name: Environmental Science and Technology Journal Issue: 12 Vol. 30; ISSN 0013-936X; ISSN ESTHAG
- Country of Publication:
- United States
- Language:
- English
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