The science of electrocoagulation is similar to an electrolysis. Here the anode continuously disintegrates due to the electrical current flowing though it produces cations which attract the pollutants in the wastewater. The cations released in water are produced in situ and acts as the electrocoagulant in this case. The dyes attached to the electrocoagulant either precipitates or flocculates, thereby separated. This is perhaps one of the advanced technologies where the system is very robust, efficient, and easily controllable requiring minimal maintenance. The chapter presents the details of the electrochemical science behind the electrocoagulation technique and further explains the engineering considerations in dealing with practical implementation.
KeywordsElectrocoagulation Electrochemical reaction Electrolysis Sacrificial anode Flocculation
- Novikova SP, Shkorbatova TL, Sokol EY (1982) Purification of effluents from the production of synthetic detergents by electrocoagulation. Soviet J Water Chem Technol 4:353–357Google Scholar
- Pouet MF, Grasmick A (1995) Urban wastewater treatment by electrocoagulation and flotation. Water Sci Technol 31:275–283Google Scholar
- Pourbaix M (1974) Atlas of electrochemical equilibria in aqueous solutions. National Association of Corrosion Engineers Science, HoustonGoogle Scholar