Inderscience Publishers

Electrochemical treatment of semi-aerobic landfill leachate using Response Surface Methodology (RSM)

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This research investigated the effectiveness of electrochemical treatment in treating semi-aerobic landfill leachate. The electrolytic reactor assembly included a pair of aluminium electrodes, a power supply and NaCl as electrolyte. The interactive effects of initial COD, current density and reaction time on treated leachate quality were studied. Regression equations were developed using design-expert software and results were analysed using response surface methodology. At optimum conditions (2000 mg/L initial COD, about 17 mA/cm² current density, 4 h reaction time and 1 g/l NaCl), SCOD removal, BOD removal and colour removal were estimated to be 82.2, 81.5 and 95%, respectively.

Keywords: electrochemical treatment, electrolyte, aluminium electrodes, current density, semi-aerobic landfill leachate, RSM, response surface methodology, COD, chamical oxygen demand, BOD, biochemical oxygen demand, pH, colour, environmental pollution

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