SOLVENT EXTRACTION OF ZINC(II) BY ORGANOPHOSPHORUS ACIDS COMPOUNDS FROM PERCHLORATE SOLUTIONS.
- 1 February 1992
- journal article
- research article
- Published by Taylor & Francis in Solvent Extraction and Ion Exchange
- Vol. 10 (1) , 51-68
- https://doi.org/10.1080/07366299208918092
Abstract
The extraction of zinc from perchlorate solutions at 0.1 mol.dm−3 of ionic strength by di(2-ethylhexyl)phosphoric acid (HDEHP), 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (HEH[EHP]) and di(n-octyl)phosphinic acid (H[DOP]) dissolved in toluene has been studied at 25 ° C. The distribution coefficient was determined as a function of pH and HA concentrations and the data were analyzed both graphically and numerically using the computer program LETAGROP-DISTR. The results showed that the data can be explained assuming the formation of ZnA2(HA)2 and ZnA2HA in organic phase for all the extractants used. A correlation between extracted species and concentration of the various extractants has been found. The predominance of the different species into the organic phase has been correlated with the difference between their extraction constants. The anion of the ionic medium is not extracted into the organic phase.Keywords
This publication has 13 references indexed in Scilit:
- EXTRACTION OF DIVALENT METALS WITH BIS(2,4,4 TRIMETHYLPENTY) PHOSPHINIC ACIDSolvent Extraction and Ion Exchange, 1990
- METAL COMPLEXES WITH PHOSPHONIC AND PHOSPHINIC ACIDSReviews in Inorganic Chemistry, 1989
- THE BEHAVIOUR-STRUCTURE RELATIONS IN THE EXTRACTION OF COBALT(II), NICKEL(II), COPPER(II) AND CALCIUM(II) BY KONOACIDIC ORGANOPHOSPHORUS EXTRACTANTSSolvent Extraction and Ion Exchange, 1989
- A QUANTITATIVE STRUCTURE-REACTIVITY STUDY OF MONO-BASIC ORGANOPHOSPHORUS ACIDS IN COBALT AND NICKEL EXTRACTIONSolvent Extraction and Ion Exchange, 1988
- Solvent extraction of cobalt and nickel by organophosphorus acids I. Comparison of phosphoric, phosphonic and phosphonic acid systemsHydrometallurgy, 1982
- Extraction equilibria of copper and zinc with alkylphosphonic acid monoester.JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 1982
- The thermodynamics of synergistic solvent extraction of zinc(II)Journal of Inorganic and Nuclear Chemistry, 1977
- Acidic organophosphorus extractants—XXV: Properties of complexes formed by Cu(II), Co(II), Ni(II), Zn(II) and Cd(II) with di(2-ethylhexyl) phosphoric acid in organic solventsJournal of Inorganic and Nuclear Chemistry, 1976
- Acidic organophosphorus extractants—XXIVJournal of Inorganic and Nuclear Chemistry, 1976
- The extraction of metallic species by dialkylphosphoric acidsJournal of Inorganic and Nuclear Chemistry, 1962