Purity Considerations and Interfacial Behavior of Solvent Extraction Systems
- 1 January 1984
- journal article
- research article
- Published by Taylor & Francis in Separation and Purification Methods
- Vol. 13 (2) , 141-152
- https://doi.org/10.1080/03602548408058529
Abstract
The techniques to purify different components of a typical solvent extraction system, viz., n-hexane/di(2-ethylhexyl)phosphoric acid (HDEHP)/CaCl2 solution, are described. Data showing how the purity of the different components affects the interfacial tension (γ) are given. The interfacial behavior of the n-hexane/ HDEHP/0.01 mol dm−3 CaCl2 solution system was studied as a function of HDEHP concentration and aqueous phase pH. γ-log [HDEHP] curves were also determined at pH 4 when the aqueous phase contained 0.05 mol dm−3 MgCl2, CaCl2, SrCl2 or BaCl2. γ-log [HDEHP] curves revealed interaction of the metal ions with the extractant and exhibited a behavior reminiscent of aggregate formation when the aqueous phase contained Ca2+.Keywords
This publication has 22 references indexed in Scilit:
- Interfacial activity of liquid-liquid extraction reagents—I: Dialkyl phosphorous based acidsJournal of Inorganic and Nuclear Chemistry, 1980
- Sulfonic Acids: Catalysts for the Liquid-Liquid Extraction of MetalsSeparation Science and Technology, 1980
- Aspects of the interf Ci l chemistry of nickel extraction with LIX63-HDNNS mixturesMetallurgical Transactions B, 1980
- Behaviour of interfacial tension in systems involving hydroxyoxime extractants for copperJournal of Inorganic and Nuclear Chemistry, 1977
- Surface and interfacial tension studies of aqueous and toluene systems containing di-n-butyl-and di-2-ethylhexyl-phosphoric acidsJournal of Colloid and Interface Science, 1977
- Chemical kinetics and mechanisms in solvent extraction of copper chelatesAccounts of Chemical Research, 1977
- Transfer rate of some tervalent cations in the biphasic system HClO4, water-dinonylnaphthalenesulfonic acid, toluene—I: Transfer rate of iron(III) determined by chemical reactionsJournal of Inorganic and Nuclear Chemistry, 1976
- Kinetics and mechanism of di-n-butylphosphoric acid transfer between toluene and aqueous phasesJournal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1976
- Interfacial equilibria with quaternary alkylammonium saltsJournal of Colloid and Interface Science, 1971
- The interaction of alkyl phosphate monolayers with metal ionsJournal of Colloid and Interface Science, 1969