Authors : Chandini M. K.; Adarsh Shetty H. N.

Volume/Issue : Volume 10 - 2025, Issue 12 - December

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DOI : https://doi.org/10.38124/ijisrt/25dec816

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Abstract : The rapid growth of industrial activities has significantly increased the generation of highly polluted wastewater, particularly from oil processing industries. Oil industry wastewater is characterized by high concentrations of chemical oxygen demand (COD), total suspended solids (TSS), total dissolved solids (TDS), and oil and grease, posing serious environmental threats if discharged untreated. In the present study, the effectiveness of the electrocoagulation (EC) process for the treatment of oil industry wastewater was investigated using iron and aluminium electrodes under various operating conditions. Batch experiments were conducted by varying electrical potential (10–30 V), electrolysis time (15–120 min), inter-electrode spacing (1.5–3.0 cm), and initial pH (4.2–7). The performance of the EC process was evaluated based on the removal efficiencies of COD, TSS, TDS, and oil and grease. Experimental results revealed that optimum operating conditions were achieved at 30 V, 90 min electrolysis time, 1.5 cm electrode spacing, and initial pH in the range of 4–8. Under these conditions, removal efficiencies exceeding 85% for COD, 95% for TSS and TDS, and 98% for oil and grease were obtained. Aluminium electrodes consistently exhibited superior removal performance compared to iron electrodes, although higher sludge production and electrode consumption were observed. The study confirms that electrocoagulation using aluminium electrodes is an efficient and reliable technique for the treatment of oil industry wastewater.

Keywords : Electrocoagulation; Oil Industry Wastewater; COD; TSS; TDS; Aluminium Electrode; Iron Electrode.

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