Performance of Electrocoagulation Process Using Iron and Aluminum Electrodes with and without Perforations

Mani Divya Konduru1, Meena Vangalapati1, Feroz Shaik2
1 Department of Chemical Engineering, Andhra University, Vizag, India. 2 Department of Mechanical Engineering, Prince Mohammad Bin Fahd University, Al Khobar, Kingdom of Saudi Arabia.,
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Electrocoagulation process is widely used for the removal of pollutants from the industrial wastewater. In the present study, an attempt was made to investigate the performance of electrocoagulation process using alu-minum and iron electrodes to treat the metal ions present in the synthetic galvanic wastewater. The electrodes used are with and without perforations and it was observed that the efficiency of electrodes with perforation (80 %) was higher than without perforations (50 %). The removal efficiency of heavy metal ions increased with retention time and direct current. The optimized values of residence time, voltage, pH, current, electrode spacing were 160 min, 6 V, 5, 0.2 A, and 3 cm, respectively. The maximum removal percentage of nickel and copper ions using perforated iron electrodes was 90.7 % and 86.0 %, respectively, and for chromium using a combination of perforated iron and aluminum electrodes it was 93.1 %. The removal of metal ions followed pseudo second order kinetic model with current dependent parameters.

[1] Jagadal, C.B.; Hiremath, M.N.; Shivayogimath, B. Study of Dairy Wastewater Treatment Using Monopolar Series System of Electrocoagulation Process with Aluminium Electrodes. Int. Res. J. Eng. Technol. 2017, 4, 1223-1227.

[2] 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. Desalina-tion 2017, 404, 1-21.

[3] Moussa, D.T.; El-Naas, M.H.; Nasser, M.; Al-Marri, M.J. A Comprehensive Review of Electrocoagulation for Water Treatment: Potentials and Challenges. J. Environ. Manage. 2017, 186, 24-41.

[4] AlJaberi, Forat Y.; Abdulmajeed, Basma A.; Hassan, Ali A.; Ghadban, Muhib L. Assessment of an Electrocoagulation Reactor for the Removal of Oil Content and Turbidity from Real Oily Wastewater Using Response Surface Method. Recent Innov. Chem. Eng. 2020, 13, 55-71.

[5] García-Morales, M.A.; González Juárez, J.C.; Martínez-Gallegos, S.; Roa-Morales, G.; Peralta, E.; del Campo López, E.M.; Barrera-Díaz, C.; Miranda, V.M.; Blancas, T.T. Pretreatment of Real Wastewater from the Chocolate Manufacturing Industry through an Integrated Process of Electrocoagulation and Sand

Filtration. Int. J. Photoenergy 2018, 3, 2146751.

[6] Hamada, M.; Ghalwa, N.A.; Farhat, N.; Al Mahllawi, K.; Jamee, N. Optimization of Electrocoagulation on Removal of Wastewater Pollutants. Int. J. Environ. Waste Manag. 2018, 8, 1000357.

[7] Muhsun, S.; Basheer, M.I.; Mahdi, M.M. Performance

Evaluation of Electro-Coagulation System for Wastewater Treat-ment. J. Eng. Sustain. Dev. 2017, 21, 101-115.

[8] Li, G.; Yang, C.; Yao, Y.; Zeng, M. Electrocoagulation of Chromium in Tannery Wastewater by a Composite Anode Modified with Titanium: Parametric and Kinetic Study. Desalin. Water Treat. 2019, 171, 294-301.