A modified couchy distribution model for the extraction of copper by hydroxyoximes from very dilute acidic sulphate solutions |
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Authors: | J. Szymanowski B. Atamanczuk |
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Affiliation: | Politechnika Poznańska, Institute of Chemical Technology, Poznań and Institute of Heavy Organic Chemicals “Blachownia”, Kedzierzyn-Ko?le Poland |
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Abstract: | A modified Couchy distribution was used to model the influence of the equilibrium pH of the aqueous phase upon the extraction of copper by means of hydroxyoximes. Statistical analysis of the derived models and the approximation errors are given. The values of pH0.5 calculated by means of the derived models are in agreement with those obtained by the use of the graphical method.The position and the structure of the alkyl group in the hydroxyoximes does not significantly influence the extraction of copper. 2-Hydroxy-5-alkylbenzaldehyde oximes can extract copper from more acidic solutions than 1-(2′-hydroxy-5′-alkylphenyl)-alkan-1-one oximes and alkyl derivatives of 2-hydroxybenzophenone oximes. |
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