Extraction of uranium and thorium with tributyl phosphate from acid solutions containing fluoride and nitrate anions

Authors
Volk, VI Vakhrushin, AY Mamaev, SL
Citation
Vi. Volk et al., Extraction of uranium and thorium with tributyl phosphate from acid solutions containing fluoride and nitrate anions, RADIOCHEMIS, 41(2), 1999, pp. 120-123
Citations number
4
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
RADIOCHEMISTRY
ISSN journal
10663622 → ACNP
Volume
41
Issue
2
Year of publication
1999
Pages
120 - 123
Database
ISI
SICI code
1066-3622(199903/04)41:2<120:EOUATW>2.0.ZU;2-Q
Abstract
The relationships in extraction of HNO3, Th, and U with TBP in the presence of HF were studied. It was found that the extraction constants of nitric a nd hydrofluoric acids are similar, and therefore these acids can displace e ach other from the organic phase. Unlike uranium, thorium extraction consid erably decreases with increasing HF concentration because of the stronger t horium complexation with fluoride anions in the aqueous phase.