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Electrodissolution of synthetic covellite in hydrochloric acid

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Abstract

A systematic study has been undertaken to investigate the anodic dissolution characteristics of impure commercial and synthetic covellite. It has been observed that the dissolution is strongly influenced by the pH and chloride concentration and also shows a typical active-passive type of behaviour with production of elemental sulphur. The rate of the dissolution process is accelerated by the formation of a CuCl −2 complex at high chloride concentrations whereas at lower concentrations of hydrochloric acid the electrochemical oxidation to sulphate is predominant.

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Author notes

  1. E. Ghali & B. Dandapani

    Present address: Dept. of Mines and Metallurgy, Laval University, G1K 7P4, Quebec

Authors and Affiliations

  1. Centre de Recherche du Moyen Nord, Université du Québec à Chicoutimi, G7H 2B1, Chicoutimi, PQ, Canada

    E. Ghali & B. Dandapani

  2. Institute of Fundamental Problems in Chemistry, University of Warsaw, 02-093, Warsaw, Poland

    A. Lewenstam

Authors
  1. E. Ghali
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  2. B. Dandapani
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  3. A. Lewenstam
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Additional information

On leave at the Université du Québec à Chicoutimi (1979).

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Ghali, E., Dandapani, B. & Lewenstam, A. Electrodissolution of synthetic covellite in hydrochloric acid. J Appl Electrochem 12, 369–376 (1982). https://doi.org/10.1007/BF00615104

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  • DOI: https://doi.org/10.1007/BF00615104

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