Electrocoagulation Technique For Arsenic Removal From Water-A review

Arsenic is deemed highly toxic to human beings. Over 296 million people residing in more than 100 countries have already been reported to be affected by arsenic rich groundwater. Upon long term exposure it can cause severe health issues, even short term chronic intake can cause health problems at higher concentrations. In terms of oxidation states, it exists in two common forms viz., Arsenite As (lll) and arsenate As (V) in water. Not all treatment methods can remove both forms of arsenic from water effectively. Electrocoagulation is an effective technique used for arsenic removal. This review focuses on important aspects of EC reactor such as effect of operating parameters and conditions to achieve optimal performance. It also discusses factors influencing energy consumption and efficiency of the process based on recent developments