Removal of COD and colour from old-landfill leachate by Advanced Oxidation Processes
by Chavalit Ratanatamskul, Parinya Auesuntrachun
International Journal of Environment and Waste Management (IJEWM), Vol. 4, No. 3/4, 2009

Abstract: This research aims to apply Advanced Oxidation Processes (AOPs) using ozonation, combined O3/H2O2 and Fenton reaction for simultaneous COD and colour removal from old-landfill leachate. The efficiencies of the AOPs for both COD and colour removal could be ranked in this order; Fenton reaction > O3/H2O2 > O3. The Fenton reaction, operated at pH 3 could significantly remove more than 85% of colour and 80% of COD from the leachate. Fenton reaction could also enhance biodegradability of the old-landfill leachate. Moreover, the reaction rates of these AOP processes for COD and colour removal were found to follow the second-order kinetics.

Online publication date: Wed, 22-Jul-2009

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