Journal article
Removal of iron and formation of copper(i) from solutions containing iron(ii) and copper(ii) by addition of chloride ion or acetonitrile
Hydrometallurgy, Vol.9(3), pp.257-275
1983
Abstract
Solutions of Cu(II) and Fe(II) establish the redox equilibrium Cu(II) + Fe(II) ⇌ K Cu(I) + Fe(III) which is displaced to the right by addition of either Cl- or acetonitrile (AN). Log K varies from -10.5 in water to about -2.5 in 4 M NaCl or AN, allowing iron to be removed selectively from copper (II) solutions either by solvent extraction with Versatic acid or by precipitation as goethite or j jarosite. To establish the required conditions Eh-pH diagrams have been developed for the CuH2OCl and CuH2OANSO4 2-systems at 25°C and 90°C. It is demonstrated that the catalytic effect of Cu(II) on the oxidation of Fe(II) to Fe(III) by O2 is dependent on the concentration of Cl- or AN and on the position of this redox equilibrium. Applications to removing iron from hydrometallurgical solutions are discussed and tested.
Details
- Title
- Removal of iron and formation of copper(i) from solutions containing iron(ii) and copper(ii) by addition of chloride ion or acetonitrile
- Authors/Creators
- D.M. Muir (Author/Creator) - Murdoch UniversityM.D. Benari (Author/Creator) - Murdoch UniversityB.W. Clare (Author/Creator) - Murdoch UniversityP. Mangano (Author/Creator) - Murdoch UniversityA.J. Parker (Author/Creator) - Murdoch University
- Publication Details
- Hydrometallurgy, Vol.9(3), pp.257-275
- Publisher
- Elsevier BV
- Identifiers
- 991005542385207891
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 2 Chemistry
- 2.89 Ionic, Molecular & Complex Liquids
- 2.89.462 Excess Molar Volumes
- Web Of Science research areas
- Metallurgy & Metallurgical Engineering
- ESI research areas
- Materials Science