Resumo

JASSO RECIO, L.D.; FUENTES-ACEITUNO, J.C.  e  PEREZ-GARIBAY, R.. Voltamperometric analysis of the reductive decomposition of chalcopyrite in the acetic acid-water system. Epistemus (Sonora) [online]. 2023, vol.17, n.34, pp.41-48.  Epub 08-Dez-2023. ISSN 2007-8196.  https://doi.org/10.36790/epistemus.v17i34.261.

In this work, an electrochemical analysis of the reduction of chalcopyrite is presented using an aqueous medium in the presence of a weak acid such as acetic acid. The purpose of the foregoing is to find the most favorable energetic conditions to dissolve the iron contained in the chalcopyrite and thereby reduce the passivation phenomenon. The investigation was carried out at the microelectrolysis level, analyzing different variables such as electrolyte concentration, electrolyte conductivity and applied potential on the chalcopyrite reduction kinetics. This study was complemented with a characterization of the surface of the reduced chalcopyrite using the FESEM technique and with a quantification of the iron that is released in the solution of the most important cathodic polarizations.

Palavras-chave : chalcopyrite; acetic acid; reduction; kinetics; characterization.

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