Optimization of the Photo-Fenton Process for Removal of Chemical Oxygen Demand from Sanitary Landfill Leachate by Response Surface Methodology

• Main Authors: Heng, G. C., Elmolla, E. S., Chaudhuri, M.
• Format: Conference or Workshop Item
• Published: 2010
• Subjects: TD Environmental technology. Sanitary engineering
• Online Access: http://eprints.utp.edu.my/2321/1/Optimization_of_the_Photo-Fenton_Process_for_Removal_of_Chemical_Oxygen_Demand_from_Sanitary_Landfill_Leachate_by_Response_Surface_Methodology.pdf; http://eprints.utp.edu.my/2321/

Satisfactory prediction equation was derived using central composite design (CCD) and response surface methodology (RSM) to optimize the photo-Fenton process for removal of chemical oxygen demand (COD) from a sanitary landfill leachate. The optimum conditions for maximum value of the response were attributed to H2O2/COD ratio, H2O2/Fe2+ ratio and reaction time in the design space. The optimum points were at about H2O2/COD ratio 3.75, H2O2/Fe2+ ratio 10.0 and 1.5 h reaction time for 70% COD removal. This study reveals that RSM is an effective tool to optimize treatment process and photo-Fenton appeared to be an effective pretreatment for landfill leachate.