AU - mahvi, amir hossein AU - meserghani, maryam AU - agharezaei, zhila AU - shirjian, mina TI - Performance of electrocoagulation process for the removal of heavy metals (copper, zinc, cobalt) from landfill leachate in Tehran PT - JOURNAL ARTICLE TA - sjimu JN - sjimu VO - 21 VI - 6 IP - 6 4099 - http://sjimu.medilam.ac.ir/article-1-419-en.html 4100 - http://sjimu.medilam.ac.ir/article-1-419-en.pdf SO - sjimu 6 ABĀ  - Abstract Introduction: Heavy metal from municipal waste landfill leachate has caused many environmental problems . The purpose this study was investigate the efficiency of Ec process in removal of heavy metal (Cu,Zn,Co) of landfill leachate of Tehran on the economic performance. Materials and Methods: This study was conducted as a pilot plant. using a Plexiglas tank glass with an effective size 0.7 liters containing 9 aluminum electrode was a page. In order to convert alternating current to direct the electrodes to the monopolar power supply were connected with a parallel arrangement. tank was filled with landfill leachate Tehran. Percent removal of heavy metals (Cu, Zn, Co) in the range of current density (50, 70, 90, 110 mA/cm2), reaction time (5, 10, 15, 20, 25, 30, 35 and 40 min) and pH values (4, 7, 9) was determined . Findings: In this study, the optimal efficiency of removal of heavy metals in the leachate flow density 110 mA/cm2 after 25 time exposure (time optimal) in leachate pH, respectively88.2, 88.6 and 93.1 per cent respectively. Under these conditions the amount of electrical energy and electrode consumption, respectively, 3.7 kilowatt hours per cubic meter leachate and 1.26 gram aluminum. per liter of leachate was . Discussion &Conclusion: This research study showed that electrocoagulation is an efficient technique for treatment of heavy metal(Cu, Zn, Co) landfill leachate Tehran. CP - IRAN IN - Tehran LG - eng PB - sjimu PG - 71 PT - Research YR - 2013