EXTRACTION AND SEPARATION OF MN(II) AND ZN(II) FROM SULFATE-SOLUTIONSBY SODIUM-SALT OF CYANEX-272

Authors
DEVI NB NATHSARMA KC CHAKRAVORTTY V
Citation
Nb. Devi et al., EXTRACTION AND SEPARATION OF MN(II) AND ZN(II) FROM SULFATE-SOLUTIONSBY SODIUM-SALT OF CYANEX-272, Hydrometallurgy, 45(1-2), 1997, pp. 169-179
Citations number
25
Categorie Soggetti
Metallurgy & Metallurigical Engineering
Journal title
Hydrometallurgy → ACNP
ISSN journal
0304386X
Volume
45
Issue
1-2
Year of publication
1997
Pages
169 - 179
Database
ISI
SICI code
0304-386X(1997)45:1-2<169:EASOMA>2.0.ZU;2-A
Abstract
Solvent extraction of divalent zinc and manganese from sulphate soluti ons was carried out using the sodium salt of Cyanex 272. Extraction of metal ions increased with increasing equilibrium pH and extractant co ncentration. The extracted species were ZnA(2) . 3HA for zinc and MnA( 2) . 3HA for manganese. One mole of hydrogen ion was released for one mole of metal extracted under the experimental conditions used in this work. The zinc and manganese loading capacity of 0.1 M Na-Cyanex 272 was determined. The influence of NaCl, NaNO3, Na2SO4 and NaSCN on the extraction of metal ions was studied. The presence of Na2SO4 in soluti on had a remarkable depressing effect on extraction systems. The separ ation factor was pH dependent.