title: Post-treatment of coking industry wastewater by the electro-Fenton process.
abstract: Effluents of the coking industry cannot be effectively treated in biological treatment units because of non-biodegradable organic matters and phenolic compounds present in the wastewater. In this study, post-treatment of biologically treated coking wastewater via the electro-Fenton process was investigated to minimize the effects of discharge of this kind of wastewater on the environment. The electro-Fenton experiments were performed using cast iron electrodes. Chemical oxygen demand (COD) and phenol were selected as the target parameters. The optimum operating conditions were as follows: reaction time = 10 minutes, pH = 3.0, electrical current = 1.0 A, and [H2O2] = 2000 mg/L. Under these conditions, COD and phenol removal efficiencies were 67.8% and 98.0%, respectively. In addition, it was determined that COD removal followed first-order reaction kinetics. Consequently, the electro-Fenton process was determined as an effective alternative post-treatment method for coking industry effluents.
authors.affiliation: Selçuk University, Department of Environmental Engineering, Campus, 42075, Selcuklu, Konya, Turkey. bguclu@selcuk.edu.tr
authors.forename: Dünyamin
authors.initials: D
authors.lastname: Güçlü
authors.forename: Serkan
authors.initials: S
authors.lastname: Sahinkaya
authors.forename: Nazan
authors.initials: N
authors.lastname: Sirin
mesh_terms: D019149:Bioreactors; D003077:Coke; D055664:Electrochemical Techniques / Q000379:methods*; D006861:Hydrogen Peroxide; D007220:Industrial Waste / Q000032:analysis*; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification
chemical_list: D003077:Coke; D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D006861:Hydrogen Peroxide