Electrochemical investigation of mineral electrodes in phosphate-buffered alkaline solution

  • D Erdenechimeg School of Engineering and Applied Sciences, National University of Mongolia, Ulaanbaatar
  • B Maralmaa School of Engineering and Applied Sciences, National University of Mongolia, Ulaanbaatar
  • AV Kashevskii Faculty Chemistry of Irkutsk State University
Keywords: electrochemical method, chalcopyrite, pyrite, sodium sulfide, flotation

Abstract

Cyclic voltammetric methods have been applied to study the electrochemical behavior of the sulfide minerals in phosphate-buffered alkaline solution. The redox process of electrodes of sulfide ores was investigated using silicone-impregnated graphite electrode. The cathodic and anodic reaction products in alkaline solution were determined within the potential range of -2V to +2V (vs. Ag/AgCl). The several successive measurement cycles’ voltammograms leads to the appearance of a new anodic peak at E = 450mV, which is absent in the first cycle and curves, as well as other features that appear in cycling, can probably be explained by secondary electrochemical transformations of the products formed by the oxidation of the original pyrite at the interface between the electrode material.

DOI: http://doi.dx.org/10.5564/mjc.v15i0.318

Mongolian Journal of Chemistry 15 (41), 2014, p33-35

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Abstract
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Published
2014-12-12
How to Cite
Erdenechimeg, D., Maralmaa, B., & Kashevskii, A. (2014). Electrochemical investigation of mineral electrodes in phosphate-buffered alkaline solution. Mongolian Journal of Chemistry, 15, 33-35. https://doi.org/10.5564/mjc.v15i0.318
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