Recent Trends and Advancement in the Removal of Persistent Organic Pollutants from Wastewater by Hybrid Electrocoagulation Chemical Degradation Processes

EC is an emerging technique used for various applications, due to its benefits, such as coagulation, flocculation and Ec treatment. Emerging pollutants are a real concern, and many researchers have focused on their removal, using EC, due to its several advantages, such as easiness of operation, less space requirements, versatile pollutants removal, lower sludge production, cost effectiveness, lower energy consumption and environment friendliness. Literature has also determined that EC technology is a proven efficient technology for treating various nature industrial effluents. However, those emerging pollutants, such as pesticides, Polyfluoroalkyl substances, cyproflyxin, amoxicillin and surfactants are not efficiently treated by simple EC technology, and their separation is not the solution, since they require degradation and safe disposal. Therefore, waste disposal from this process is a major concern, and the choice of advanced EC-degradation technology depends upon the nature and strength of the pollutant. To address these issues, various processes coupled with EC have been used, such as EF, PDS, EO, ozonation, photochemical degradation, PC, aeration and sonication. Thus, this paper focuses on the basics of EC technology, several degradation systems and application of combined degradation-EC technologies, for treating various WW.