A critical review of state-of-the-art technologies for electroplating wastewater treatment

The discharge of untreated electroplating wastewater could lead to the formation toxic metal-organic complexes that is harmful for environment. There are several processes reported treat such as chemical precipitation, adsorption, coagulation and flocculation, ion exchange, electrocoagulation, membrane filtration, advanced oxidation process biorecovery. These methods provide possibility capture different metals remove organic pollutants. combination together has shown higher efficiencies in removing a wide range contaminants than single treatment systems. main challenge identifying highest performance most cost-efficient process. This review provides an overview technologies describes strengths drawbacks among them. efficiency systems kinds pollutants removed, along with comparison between these have been analysed. When comparing technologies, it hard identify efficient one each method successful certain not recovered from other methods. Therefore, making decision on best technology depends objective targeted Furthermore, cost evaluated based literature brief look at differences technologies. targeting removal heavy metals, around 4.45 $/m3 adsorption employing nano zero valent iron (nZVI). While lowest about 0.35 USD/m3 followed by electrodeposition.