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Adsorption Of Hydroxyoximes At The Organic/Aqueous Interface And The Interfacial Mechanism Of Copper Extraction

  • J. Szymanowski

Abstract

Physico-chemical data characterizing hydroxyoxime behaviour in the aqueous and organic phases and at the interface are presented. The kinetic data and the mechanism of copper extraction by hydroxyoximes is discussed. It is shown that for hydroxyoximes having a long alkyl, reaction proceeds mainly at the interface and the extraction rate depends upon the HLB value of the hydroxyoximes. The contribution of the bulk phase reaction for 2-hydroxy-5-nonylbenzaldehyde oxime, 2-hydroxy- 5-nonylacetophenone oxime and 2-hydroxy- 5-nonylbenzophenone oxime, i.e., for active components of commercial extractants P 50, SME 529 and Lix 65 N, can be estimated as being 4%, 2% and 1%, respectively. For 2-hydroxy-5-methylbenzaldehyde oxime, 2-hydroxy-5-methyl- acetophenone oxime and 2-hydroxy-5-methylbenzophenone oxime this contribution amounts to 99.9%, 84.2% and 12.5%, respectively.

Keywords

Extraction Rate Interfacial Tension High Surface Activity Copper Extraction Acetophenone Oxime 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag New York 1990

Authors and Affiliations

  • J. Szymanowski
    • 1
  1. 1.Institute of Chemical Technology and EngineeringTechnical University of PoznanPoznanPoland

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