Optimization of Photo-Fenton Treatment of Mature Landfill Leachate

• Main Authors: Heng, G. C., Elmolla, E. S., Chaudhuri, M.
• Format: Article
• Published: Technoscience Publications 2012
• Subjects: TD Environmental technology. Sanitary engineering
• Online Access: http://eprints.utp.edu.my/7630/1/Optimization_of_Photo-Fenton_Treatment_of_Mature_Landfill_Leachate.pdf; http://www.neptjournal.com/; http://eprints.utp.edu.my/7630/

Photo-Fenton treatment of amature landfill leachatewas optimized by using the response surfacemethodology (RSM). The optimum operating variables to achieve 70%removal of COD, 80%removal of colour and 80% removal of NH3-N were: H2O2/CODmolar ratio 3.75, H2O2/Fe2+ molar ratio 10.5 and irradiation time 1.5 h. There was good agreement (< 2%error) between experimental removal efficiency andmodel prediction. The characteristics of the photo-Fenton treated leachate were: NH3-N 112 mg/L, colour 108 Pt-Co Unit, COD350mg/L, BOD5 116mg/L andBOD5/CODratio 0.33, indicating that the treated leachatewas amenable to biological treatment. The study has revealed thatRSMis an effective tool to optimize the treatment process and photo-Fenton is an effective pretreatment ofmature landfill leachate for biological treatment.