title: Parametric and energy consumption optimization of Basic Red 2 removal by electrocoagulation/egg shell adsorption coupling using response surface methodology in a batch system.
abstract: In this study, response surface methodology (RSM) model was applied for optimization of Basic Red 2 (BR2) removal using electrocoagulation/eggshell (ES) coupling process in a batch system. Central composite design was used to evaluate the effects and interactions of process parameters including current density, reaction time, initial pH and ES dosage on the BR2 removal efficiency and energy consumption. The analysis of variance revealed high R(2) values (≥85%) indicating that the predictions of RSM models are adequately applicable for both responses. The optimum conditions when the dye removal efficiency of 93.18% and energy consumption of 0.840 kWh/kg were observed were 11.40 mA/cm(2) current density, 5 min and 3 s reaction time, 6.5 initial pH and 10.91 g/L ES dosage.
authors.affiliation: Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130026, China E-mail: helarc2008@gmail.com.
authors.forename: Helder Pereira
authors.initials: HP
authors.lastname: de Carvalho
authors.affiliation: Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130026, China E-mail: helarc2008@gmail.com.
authors.forename: Jiguo
authors.initials: J
authors.lastname: Huang
authors.affiliation: Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130026, China E-mail: helarc2008@gmail.com.
authors.forename: Meixia
authors.initials: M
authors.lastname: Zhao
authors.affiliation: Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130026, China E-mail: helarc2008@gmail.com.
authors.forename: Gang
authors.initials: G
authors.lastname: Liu
authors.affiliation: Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130026, China E-mail: helarc2008@gmail.com.
authors.forename: Xinyu
authors.initials: X
authors.lastname: Yang
authors.affiliation: Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun 130118, China and School of Environment, Northeast Normal University, Changchun 130117, China.
authors.forename: Lili
authors.initials: L
authors.lastname: Dong
authors.affiliation: Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130026, China E-mail: helarc2008@gmail.com.
authors.forename: Xingjuan
authors.initials: X
authors.lastname: Liu
mesh_terms: D000327:Adsorption; D000818:Animals; D004528:Egg Shell / Q000737:chemistry*; D004564:Electrocoagulation; D008962:Models, Theoretical; D015394:Molecular Structure; D010619:Phenazines / Q000302:isolation & purification*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D010619:Phenazines; D014874:Water Pollutants, Chemical; C009195:safranine T