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The automobile sectors are an essential field of the service provider circle. The principal eminent impact identified with the vehicle service workshops, is the discharge of used surfactant, engine oil, and washed water into the surface and water bodies. In this context, this study’s objective is to treat the automobile wastewater by unified/combined electrocoagulation-adsorption (ECA) to achieve the permissible removal limits of COD and surfactant. ECA treatment experiments were conducted by varying adsorbent dose, mixing time, and electrolysis time using Box Behnken design model. By performing experiments, the optimum conditions were statistically obtained at ECA time of 25 min, mixing speed of 465 rpm, and adsorbent dosage of 1.81 mg/L for 71.58% COD removal and 77.91% surfactant removal. The outcomes show that the experimental results of this investigation were in good agreement with the model predictions.

Unification electrocoagulation-adsorption treatment for removal of COD and surfactant from automobile wastewater