Voltamperometric analysis of the reductive decomposition of chalcopyrite acetic acid-water system
DOI:
https://doi.org/10.36790/epistemus.v17i34.261Keywords:
chalcopyrite, acetic acid, reduction, kinetics, characterizationAbstract
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, in order 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.
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