title: Sono assisted electrocoagulation process for the removal of pollutant from pulp and paper industry effluent.
abstract: In the present work, the efficiency of the sonication, electrocoagulation, and sono-electrocoagulation process for removal of pollutants from the industrial effluent of the pulp and paper industry was compared. The experimental results showed that the sono-electrocoagulation process yielded higher pollutant removal percentage compared to the sonication and electrocoagulation process alone. The effect of the operating parameters in the sono-electrocoagulation process such as electrolyte concentration (1-5 g/L), current density (1-5 A/dm2), effluent pH (3-11), COD concentration (1500-6000 mg/L), inter-electrode distance (1-3 cm), and electrode combination (Fe and Al) on the color removal, COD removal, and power consumption were studied. The maximum color and COD removal percentages of 100 and 95 %, respectively, were obtained at the current density of 4 A/dm2, electrolyte concentration of 4 g/L, effluent pH of 7, COD concentration of 3000 mg/L, electrode combination of Fe/Fe, inter-electrode distance of 1 cm, and reaction time of 4 h, respectively. The color and COD removal percentages were analyzed by using an UV/Vis spectrophotometer and closed reflux method. The results showed that the sono-electrocoagulation process could be used as an efficient and environmental friendly technique for complete pollutant removal.
authors.affiliation: Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia. drasaithambi2014@gmail.com.
authors.forename: P
authors.initials: P
authors.lastname: Asaithambi
authors.affiliation: Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia. azizraman@um.edu.my.
authors.forename: Abdul Raman Abdul
authors.initials: ARA
authors.lastname: Aziz
authors.affiliation: Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia.
authors.forename: Baharak
authors.initials: B
authors.lastname: Sajjadi
authors.affiliation: Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia.
authors.forename: Wan Mohd Ashri Bin Wan
authors.initials: WMABW
authors.lastname: Daud
mesh_terms: D003116:Color; D004564:Electrocoagulation / Q000379:methods*; D004566:Electrodes; D004573:Electrolytes; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D010209:Paper; D014865:Waste Disposal, Fluid / Q000379:methods; D018508:Water Purification / Q000379:methods*
chemical_list: D004573:Electrolytes; D007220:Industrial Waste
keywords: Color and COD removal; Electrocoagulation; Kinetics; Power consumption; Pulp and paper effluent; Sonication