The use of nano materi̇al in electrocoagulation treatment of leachate

Based on the fact that the Chemical Oxygen Demand (COD) value in leachate is very high and cannot be fully treated by many methods in the literature, the performance of using nano materials for pretreatment in electrocoagulation treatment was investigated. Firstly, optimum electrocoagulation conditions were established for COD treatment in leachate and the effect of the addition of Multi Walled Carbon Nanotubes (MWCNT) and Graphene Oxide (GO) on the treatment efficiency was investigated by considering the optimum operating conditions. The highest COD removal was achieved with 1 mg MWCNT at 0.8 A current, Fe-Fe electrode, pH=6, 250 rpm mixing speed and 40 minutes contact time with 32.89% COD removal. 36.5% COD removal was achieved with the addition of 8 mL GO at 240 minutes contact time. It was concluded that the addition of plain carbon nanotubes as pretreatment to the treatment with electrocoagulation in COD removal from leachate does not provide high efficiency, and in the light of the studies carried out, functionalized nano materials will provide higher treatment efficiencies. Keywords: Electrocoagulation, Chemical Oxygen Demand, Carbon Nanotube, Leachate, Graphene Oxide (GO)