Abstract
Leachate can be defined as the liquid resulting from the decomposition of waste and infiltration of rainwater in the landfill. Leachate has unique characteristics, it has a high content of organic, metals, acids, dissolved salts and microorganisms and due to the complex leachate content it requires processing in treating leachate. Electrocoagulation is one of technology that can be applied to remove organic and heavy metal content in leachate. In this study, it was seen how the effect of voltage and contact time using aluminum electrodes on decreasing the concentration of Fe, Cu and Pb in leachate then calculating the reduction efficiency of Fe, Cu and Pb. The treatment of electric voltages given in this study were 4, 8 and 12 volts with a contact time of 15, 30 and 45 minutes. The results showed metal removal reached 0.030 mg/L, 0.007 mg/L and 0.010 mg/L and with efficiencies of 99.476%, 99.364% and 98.214% for Fe, Cu and Pb parameters. The decrease in metal content by 21.8% is influenced by voltage and 3.74% is influenced by the contact time when tested using the Pearson Correlation Test. These results indicate that the leachate treatment process with electrocoagulation processing has great efficiency.
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