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Electrochemical treatment of swine wastewater: a review
  • Gonçalo Lourinho,
  • Paulo S. D. Brito
Gonçalo Lourinho
VALORIZA - Research Center for Endogenous Resource Valorization, Campus Politécnico, 10, 7300-555, Portalegre, Portugal)
Author Profile
Paulo S. D. Brito
VALORIZA - Research Center for Endogenous Resource Valorization, Campus Politécnico, 10, 7300-555, Portalegre, Portugal)

Abstract

Electrochemical methods have received an intensive interest for the treatment of many types of wastewaters. In comparison to biological processes, the introduction of electrochemistry-based approaches such as electrocoagulation (EC) and electrooxidation (EO) bring about higher efficiencies and shorter reaction times, which render them as promising for future environmental applications. This review is focused on the electrolytic treatment of wastewaters derived from swine production (swine wastewaters) which contain high polluting loads. Fundamental principles and basic mechanisms of the main electrochemical technologies are presented. Different kinds of electrode materials utilized are summarized, especially anode materials. The effect of important operating parameters is discussed in the context of swine wastewater remediation, such as current density, electrolysis time, pH values, and others. Finally, several leading issues which could determine the practical adoption of the electrochemical option, namely combined processes, hydrogen production and utilization, electrocatalyts, and reactor design are briefly discussed providing an outlook of novel developments and future research.t