New hydrolytically stable solvent for Am/Eu separation in acidic media
- V.G. Khlopin Radium Institute, St.-Petersburg, 2nd Murinskiy Ave, 28, Russia, 194021 (Russian Federation)
Americium and europium extraction by synergistic mixture of 2,6-bis(1-aryl-1H-tetrazol-5-yl)pyridines (ATP) - chlorinated cobalt dicarbollide (CCD) in polar diluent s from HNO{sub 3} media was studied. Meta-nitro-benzo-trifluoride, phenyl-tri-fluoro-methyl sulfone and 1,2-dichloroethane were used as diluents. The effect of diluent, composition of aqueous phase and substituent nature in aryl ring of ATPs on the extraction efficiency and selectivity of americium and europium separation was investigated. At the optimal ratio of nATP:CCD 1:1 the Am - Eu separation factor exceeded 90. Extraction of {sup 85}Sr, {sup 137}Cs and {sup 133}Ba was investigated and it was found that the mixture nATP-CCD provided the separation of Sr /Ba pair with a factor of 35. High resistance of 2,6-bisaryltetrazolyl pyridines to the action of nitric acid was demonstrated. (authors)
- Research Organization:
- American Nuclear Society, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
- OSTI ID:
- 20979529
- Resource Relation:
- Conference: Advanced nuclear fuel cycles and systems (GLOBAL 2007), Boise - Idaho (United States), 9-13 Sep 2007; Other Information: Country of input: France; 7 refs; Related Information: In: Proceedings of GLOBAL 2007 conference on advanced nuclear fuel cycles and systems, 1873 pages.
- Country of Publication:
- United States
- Language:
- English
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