On a Possible Role of Microemulssons for Achieving the Separation of Ni2+and Co2+from Their Mixtures on a Kinetic Basis
- 1 June 1989
- journal article
- research article
- Published by Taylor & Francis in Separation Science and Technology
- Vol. 24 (7-8) , 485-493
- https://doi.org/10.1080/01496398908049786
Abstract
Complexation of Ni2+ or Co2+ with extractant molecules is usually a very fast process. A separation of the two metals from their mixtures on a kinetic basis would require a considerable slowing down of the rates of complexation. We show here that this can be achieved with microemulsions of a lipophilic extractant by taking advantage of the electrostatic repulsions between the metal ions and the charged surface of the dispersed particles. The effects of pH, extractant concentration, and purity are examined.Keywords
This publication has 14 references indexed in Scilit:
- Microemulsions as model systems to study the kinetics and mechanism of reactions occurring in the extraction of metal ions by lipophilic extractants: complexation of nickel(II) by 8-hydroxyquinoline and Kelex 100The Journal of Physical Chemistry, 1989
- Effect of an alkyl chain substituent on the kinetics and thermodynamics of complexation of 8-hydroxyquinolines with Ni2+ and Co2+ in methanolic solutionsPolyhedron, 1988
- Transport of alkali-metal picrates through liquid membranes: Coupled action of w/o microemulsion droplets and lipophilic crown-ether carriersTalanta, 1987
- Use of microemulsions as liquid membranes. Improved kinetics of solute transfer at interfacesFaraday Discussions of the Chemical Society, 1984
- On the structure and composition of Kelex 100Hydrometallurgy, 1983
- The Kinetics of Metal Solvent ExtractionCritical Reviews in Analytical Chemistry, 1980
- Sulfonic Acids: Catalysts for the Liquid-Liquid Extraction of MetalsSeparation Science and Technology, 1980
- Systematic study of the solvent extraction of metal oxinatesAnalytica Chimica Acta, 1963
- Fast elementary steps in chemical reaction mechanismsPure and Applied Chemistry, 1963
- A Re-evaluation of the Spectral Change Method of Determining Critical Micelle Concentration1Journal of the American Chemical Society, 1955