Electrolysis Remediation of Heavy Metals By Using 2d Hexagonal Electrode on The Leachate From Final Disposal (Landfill) Sitimulyo Piyungan Yogyakarta

Leachate is liquid that permeated through rubbish heap that contained of organic/inorganic substances and heavy metals which influence human health if it accumulated in human body. Some types and number of heavy metal ions contained in leachate determine rate of pollution in the leachate-s original place. To eliminate content of heavy metal ions of leachate, this research used Electrolysis Remediation method using 2-D hexagonal electrode. It was expected that, after the electrolysis remediation process, content of heavy metal ions of leachate could be reduced, so that it existed under threshold. Leachate analysis used electrolysis remediation observing pH, resistivity and concentration of heavy metals, such as Hg, Cu, Cr, and Cd of leachate before, during and after processing the electrolysis. Results of research indicated that contents of leachate in Hg metal ions were 2.149 ppm, Cu, 0.074 ppm, Cr, 0.272 ppm, Pb, 0.161 ppm, and Zn = 0.340 ppm. For Cd was not detected in the leachate but existed in cathode deposit as much as 1.907 ppm However, concentration of the metal ions was different to each time because rubbish in TPA was also different. Process efficiencies for Hg were 93 %, Cu, 0 %, Cr, -1266 %, Pb, -19 % and Zn, 48 %. Efficiency process of electrolysis remediation was highly influence by distance of cathode and duration of remediation process. Closer distance from cathode, time taken for remediation process was longer, also, farer distance from cathode, the efficient remediation process would take longer time.