Electrocoagulation of whey acids: anode and cathode materials, electroactive area and polarization curves

Authors

  • Francisco Prieto Garcia Área Académica Química, Universidad Autónoma del Estado de Hidalgo. Carret. Pachuca-Tulancingo, km. 4.5, C. P. 42076. Mineral de la Reforma. Hidalgo http://orcid.org/0000-0001-8878-3908
  • Judith Callejas Hernandez Área Académica Química, Universidad Autónoma del Estado de Hidalgo. Carret. Pachuca-Tulancingo, km. 4.5, C. P. 42076. Mineral de la Reforma. Hidalgo
  • Judith Prieto Mendez Área Académica de Agronomía, Universidad Autónoma del Estado de Hidalgo. Carret. Pachuca-Tulancingo, km. 4.5, C. P. 42076. Mineral de la Reforma. Hidalgo
  • Yolanda Marmolejo Santillan Área Académica Química, Universidad Autónoma del Estado de Hidalgo. Carret. Pachuca-Tulancingo, km. 4.5, C. P. 42076. Mineral de la Reforma. Hidalgo

DOI:

https://doi.org/10.5599/jese.381

Keywords:

electrocoagulation, electroactive area, capacitance, overpotentials, whey

Abstract

Anode (Al and Fe) and cathode (graphite and Ti/RuO2) materials have been tested for electrocoagulation (EC) and purification of the acid whey. The electroactive areas (EA) of electrodes were calculated by the double layer capacitance method. Experiments were performed by cyclic voltammetry, chronoamperometry and polarization experiments. Among cathodic materials, the Ti/RuO2 electrode showed higher EA (2167 cm2) than graphite (1560 cm2). The Fe anode was found more stable than Al with greater charge transfer carried out in less time. Correlation of these results with those obtained during preliminary tests confirmed high removals (79 %) in 8 h. For the Al electrode, 24 h were required to achieve efficiency of 49 %.

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Published

28-06-2017

How to Cite

Prieto Garcia, F., Callejas Hernandez, J., Prieto Mendez, J., & Marmolejo Santillan, Y. (2017). Electrocoagulation of whey acids: anode and cathode materials, electroactive area and polarization curves. Journal of Electrochemical Science and Engineering, 7(2), 89–101. https://doi.org/10.5599/jese.381

Issue

Section

Electrochemical Science