Solvent extraction of copper(II), nickel(II), cobalt(II), zinc(II), and iron(Ill) by high molecular weight hydroxyoximes |
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| Authors: | L Calligaro A Mantovani U Belluco M Acampora |
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| Institution: | Istituto di Chimica Industriale, Facoltà di Ingegneria, Università di Padova, Via Marzolo, 9, 35100 Padova, Italy;Istituto di Chimica Fisica, Università di Padova, Via Loredan 4, 35100 Padova, Italy |
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| Abstract: | The effects of pH have been examined on the extraction of the title ions by complexing with LIX-64N in kerosene. The extent of metal extraction as a function of pH is: Cu(II) < Fe(III) < Ni(II) < Zn(II) < Co(II). Stripping of all metal ions but cobalt with sulphuric acid from loaded kerosene complexing solutions is easily accomplished. Oxidation of Co(II) to Co(III) in the organic phase prevents stripping of this metal ion. |
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| Keywords: | Author to whom correspondence should be addressed |
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