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Environmental Science and Pollution Research

, Volume 21, Issue 4, pp 2397–2413 | Cite as

Treatment of wastewater by electrocoagulation: a review

  • Omprakash SahuEmail author
  • Bidyut Mazumdar
  • P. K. ChaudhariEmail author
Review Article

Abstract

The electrocoagulation (EC) process is an electrochemical means of introducing coagulants and removing suspended solids, colloidal material, and metals, as well as other dissolved solids from water and wastewaters. The EC process has been successfully employed in removing pollutants, pesticides, and radionuclides. This process also removes harmful microorganisms. More often during EC operation, direct current is applied and electrode plates are sacrificed (dissolved into solution). The dissolution causes an increased metal concentration in the solution that finally precipitates as oxide precipitates. Due to improved process design and material of construction, the EC process is being widely accepted over other physicochemical processes. Presently, this process has gained attention due to its ability to treat large volume and for its low cost. The aim of this study is to review the mechanism, affecting factors, process, and application of the electrocoagulation process.

Keywords

Current density Electrocoagulation Electroflotation Electrochemical reactor Wastewater treatment 

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© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Department of Chemical EngineeringNIT Raipur (C.G.)RaipurIndia

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