Removal of Ammonical Nitrogen & COD by Electrocoagulation Process from Wastewater

Abstract

Electrocoagulation is a very unique process that has the great ability to remove wastes from water due to
its high decolourization efficiency, economically attractive and relatively little sludge formation compared with
other tradition processes such as biological, physical, chemical, adsorption and advanced oxidation processes.
Electrocoagulation process is effective for removing a wide range of impurities like color, COD, BOD, turbidity,
and metal ions removal from wastewater. This paper focuses on various studies on treatment of industrial
wastewater by Electrocoagulation method depending on the mechanisms and several affected factors such as pH,
current density, applied voltage, agitation speed, type, size and number of electrodes, inter electrode distance, initial
concentration and electrolysis time which have been published in journals. The aim of the review is to explain the
basics and up to date advancement of electrocoagulation process for the improvements in the pollutant removal
efficiency. In this paper, the overview of electrocoagulation method with effect of key operational parameters on it
is provided. Limitations of this method are also represented for the better understanding of the mechanism of
pollutant removal and its optimization.