Different electrochemical methods such as electrocoagulation, electro-oxidation, and electroreduction
have been found effective for the removal of various anionic pollutants from water and wastewater.
Electrochemical processes can transform contaminants directly or manipulate the redox condition of
the environmental matrix to achieve adaptive condition. This review focuses on the removal of different
anions, including cyanide, fluoride, nitrate, nitrite, phosphate, and sulfate, from water by electrocoagulation,
electro-oxidation, and electroreduction methods. Optimum treatment conditions for studied anions
in each electrochemical method are discussed. An overview of electrochemical methods used for anions
removal together with specific applications and experimental results are presented and discussed. It is
evident from the literature reviewed that these methods have shown considerable potential for the
removal of anionic pollutants from water. However, the most challenging issue in this research area is
to find out the practical application of these methods on commercial scale, leading to the improvement
of pollution control.
2014 Elsevier B.V. All rights reserved.
Different electrochemical methods such as electrocoagulation, electro-oxidation, and electroreduction
have been found effective for the removal of various anionic pollutants from water and wastewater.
Electrochemical processes can transform contaminants directly or manipulate the redox condition of
the environmental matrix to achieve adaptive condition. This review focuses on the removal of different
anions, including cyanide, fluoride, nitrate, nitrite, phosphate, and sulfate, from water by electrocoagulation,
electro-oxidation, and electroreduction methods. Optimum treatment conditions for studied anions
in each electrochemical method are discussed. An overview of electrochemical methods used for anions
removal together with specific applications and experimental results are presented and discussed. It is
evident from the literature reviewed that these methods have shown considerable potential for the
removal of anionic pollutants from water. However, the most challenging issue in this research area is
to find out the practical application of these methods on commercial scale, leading to the improvement
of pollution control.
2014 Elsevier B.V. All rights reserved.
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