Electrocoagulation Application in The Processing of Palm Oil Mill Effluent from Anaerobic Fixed Bed Reactor

The production of Crude Palm Oil (CPO) in Indonesia keep increase following the amount of wastewater that being produced. Therefore laboratory scale research of processing of palm oil mill effluent of anaerobic fixed bed reactor with electrocoagulation technique was conducted. Electrocoagulation is a process of coagulation using a direct current through an electrochemical events are symptoms of electrolyte decomposition. This research aims to determine the influence of voltage in the adaptor to the performance of this electrocoagulation system and to determine the optimum operating time for the liquid waste treatment. The material that being used is palm oil mill effluent with electrocoagulation equipment devices with the discharge of 1.5 liters/minute, the residence time of wastewater at 1 hour, 5 cm electrode spacing, as well as the strong current of 8, 9, 10, and 11 Ampere. The results obtained by the reduction in COD (Chemical Oxygen Demand) at the highest voltage of 9 volts at 120 minutes of operating time 95,76%, the reduction of TS (Total Solid) obtained at the highest voltage of 10 volts at 90 minutes of operating time 24,41%, the reduction of TSS (Total Suspended Solid) the highest obtained at the operating time of 180 minutes and a voltage of 10 volts give the rejection 91,78 %