Application of Electrocoagulation Process for the Removal of Acid Orange 5 in Synthetic Wastewater

Document Type : Research Article


Young Researchers and Elite Club, Arak Branch, Islamic Azad University, Arak, I.R. IRAN


IIn this study, the Electro Coagulation (EC) was used for the removal of acid orange 5 from synthetic wastewater in a batch electrochemical reactor. The impact of the operational variables such as current density, initial pH, time of electrolysis, and initial concentration of the dye was investigated. The results showed that the optimum conditions were obtained at initial pH of 7, current density at 2 mA/cm2, 60 mg/lit of Acid orange 5 and time of reaction at 60 min. At optimum conditions, the removal efficiency of acid orange 5 and Chemical Oxygen Demand (COD) were 99.3 and 85.5%, respectively. The kinetic study showed that the removal reaction was first order and
the rate constant and half-life of reaction were obtained.


Main Subjects

[1] Eren Z., Ultrasound as a Basic and Auxiliary Process for Dye Remediation: A Review, J. Environ. Manage., 104: 127–141(2012).
[2] Wu J., Liu F., Zhang H., Zhang J.H., Li L., Decolorization of CI Reactive Black 8 by Electrochemical Process with/without Ultrasonic Irradiation, Desalin. Water Treat., 44: 36–43(2012).
[4] Shokri A., Removal of Acid red 33 from aqueous solution by Fenton and photo Fenton processes, J. Chem. Health Risks, 7: 119–131(2017).
[5] Khandegar V., Saroha Anil K., Electrocoagulation for the Treatment of Textile Industry Effluent–
A Review,
J. Environ. Manage., 128: 949–963(2013).
 [6] Mollah M.Y.A., Gomes J.A.G., Dasc K.K., Cocke D.L., Electrochemical Treatment of Orange II Dye Solution-Use of Aluminum Sacrificial Electrodes and Floc Characterization. J. Hazard. Mater., 174: 851–858 (2010).
[7] Gourich B.A., Sekki K., Madani M., Chibane, Removal Turbidity and Separation of Heavy Metals Using Electrocoagulation–Electroflotation Technique: A Case Study, J. Hazard. Mater., 164: 215–222 (2009).
[8] Khosravi R., Hossini H., Heidari M., Fazlzadeh M., Biglari H., Taghizadeh, A., Barikbin B., Electrochemical Decolorization of Reactive Dye from Synthetic Wastewater by Mono-Polar Aluminum Electrodes System, Int. J. Electrochem. Sci., 12: 4745–4755(2017).
[11] Shokri A., Degradation of 2-Nitrophenol from Petrochemical Wastewater by Ozone, Russ. J. Appl. Chem., 88: 2038−2043 (2015).
[12] Y─▒lmaz A.E., Boncukcuoglu R., Kocakerim M.M., Kocadagistan E, An Empirical Model for Kinetics of Boron Removal from Boron Containing Wastewaters by the Electrocoagulation Method in a Batch Reactor, Desalination, 230: 288–297(2008).
[13] Bayramoglu M., Eyvaz M., Kobya M., Treatment of the Textile Wastewater by Electro Coagulation: Economical Evaluation, Chem. Eng. J., 128: 155–161 (2007).
[14] Adhoum N., Monser L., Decolourization and Removal of Phenolic Compounds from Olive Mill Wastewater by Electrocoagulation, Chem. Eng. Process., 43:1281–1287(2004).
[15]  Hakizimana J.N., Gourich B., Chafi M., Stiriba Y., Vial C., Drogui P., Naja J., Electrocoagulation Process in Water Treatment: A Review of Electrocoagulation Modeling Approaches,  Desalination, 404 (2017) 1–21(2017).
[16]  Essadki A.H., Bennajah M., Gourich B., Vial C.h., Azzi M., Delmas H., Electrocoagulation/ Electrofloatation in an External-Loop Airlift Reactor—Application to the Decolorization of Textile Dye Wastewater: a Case Study, Chem Eng. Process, 47:1211–1223(2008).
[17] Alizadeh M., Ghahramani E., Zarrabi M., Hashemi S., Efficient De-colorization of Methylene Blue by Electro-coagulation Method: Comparison of Iron and Aluminum Electrode, Iran. J. Chem. Chem. Eng. (IJCCE), 34(1) 39-47 (2015).
[18] Vik E.A., Carlson D.A., Eikum A.S., Gjessing E.T., Electrocoagulation of Potable Water, Water Res., 18: 1355–1360(1984).
[20] Bazrafshan E., Biglari H., Mahvi A.H., Humic Acid Removal from Aqueous Environments by Electrocoagulation Process Using Iron Electrodes, J. Chem., 9: 2453–2461(2012).
[21] Kobya M., Hiz H., Senturk E., Aydiner C., Demirbas E., Treatment of Potato Chips Manufacturing Wastewater by Electrocoagulation, Desalination, 190: 201–211 (2006).
[24] Shokri A., Mahanpoor K., Degradation of Ortho-Toluidine from aqueous solution by the TiO2/O3 process, Int. J. Ind. Chem.,  8:101–108(2017).