SOLVENT-EXTRACTION OF THORIUM(IV) BY CYANEX 272 CYANEX 302 CYANEX 301PC-88A AND THEIR BINARY-MIXTURES WITH TBP DOSO FROM AQ HNO3 AND H2SO4MEDIA/

Authors
MANSINGH PS CHAKRAVORTTY V DASH KC
Citation
Ps. Mansingh et al., SOLVENT-EXTRACTION OF THORIUM(IV) BY CYANEX 272 CYANEX 302 CYANEX 301PC-88A AND THEIR BINARY-MIXTURES WITH TBP DOSO FROM AQ HNO3 AND H2SO4MEDIA/, Radiochimica Acta, 73(3), 1996, pp. 139-143
Citations number
22
Categorie Soggetti
Nuclear Sciences & Tecnology","Chemistry Inorganic & Nuclear
Journal title
Radiochimica Acta → ACNP
ISSN journal
00338230
Volume
73
Issue
3
Year of publication
1996
Pages
139 - 143
Database
ISI
SICI code
0033-8230(1996)73:3<139:SOTBC2>2.0.ZU;2-X
Abstract
The extraction behaviour of thorium(IV) from aqueous HNO3 and H2SO4 by the commercial extractants Cyanex 272, Cyanex 302. Cyanex 301 and PC- 88A (HR) in benzene has been studied. The extracted species are propos ed to be Th(NO3)(2)R(2) and ThSO(4)R(2) on the basis of slope analysis . The order of extraction efficiencies in the nitric acid medium is Cy anex 272 > PC-88A > Cyanex 302 > Cyanex 301 which is just reversed in the sulphuric acid medium. Mixtures of PC-88A, Cyanex 301 and Cyanex 2 72 with tri-n-butyl phosphate or di-n-octyl sulphoxide result in signi ficant synergism in the extraction process.