Extraction of uranium and thorium with TBP from fluoride - nitric acid solutions

Authors
Volk, VI Vakhrushin, AY Mamaev, SL
Citation
Vi. Volk et al., Extraction of uranium and thorium with TBP from fluoride - nitric acid solutions, J RAD NUCL, 246(3), 2000, pp. 697-702
Citations number
4
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
ISSN journal
02365731 → ACNP
Volume
246
Issue
3
Year of publication
2000
Pages
697 - 702
Database
ISI
SICI code
0236-5731(200012)246:3<697:EOUATW>2.0.ZU;2-6
Abstract
The extraction of HNO3, thorium and uranium were studied in the presence of hydrofluoric acid. The extraction constants of both the acids are shown to be close to one another which results in their mutual displacement from th e organic phase. Contrary to uranium, the extraction of thorium is much red uced as the concentration of hydrofluoric acid increases which may be expla ined by a stronger complexation of Th by fluoride ion in the aqueous phase.