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oai:ojs.www.eurjchem.com:article/1736 2018-12-31T07:23:25Z eurjchem:ART driver

Removal of Methylene Blue in aqueous solutions by Electrocoagulation process: Adsorption, Kinetics, studies Assémian, Alain Stéphane Kouassi, Konan Edmond Adouby, Kopoin Drogui, Patrick Boa, David Kinetic Removal Adsorption Methylene blue Electrocoagulation Monopolar configuration The purpose of this study is to understand the mechanism driving the removal of methylene blue through electrocoagulation process. Experiments were carried out using iron as anode and cathode in a batch electrochemical cell operated in a monopolar configuration. The effects of operating parameters (initial pH, current density, initial dye concentration and energy consumption) on the removal of methylene blue from solution were investigated. The results showed that the optimum removal efficiency of 93.2% was achieved for a current density of 9.66 mA/cm2, optimal pH of 8±0.01 with a specific energy consumption of 7.451 kWh/m3. Afterwards, first and second-order rate equations were successively applied to study adsorption kinetics models. On top of usual correlation coefficients (r2), statistical test Chi-square (χ2) were applied to evaluate goodness of fit and consequently find out the best kinetic model. Results showed that MB adsorption process onto iron hydroxides formed in aqueous solution during electrocoagulation treatment followed a second-order kinetic. Atlanta Publishing House LLC 2018-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://www.eurjchem.com/index.php/eurjchem/article/view/1736 10.5155/eurjchem.9.4.311-316.1736 European Journal of Chemistry; Vol. 9 No. 4 (2018): December 2018; 311-316 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/1736/pdf_1736 Copyright (c) 2018 Authors