Municipal Leachate Treatment by Fenton Process: Effect of Some Variable and Kinetics

Abstract

Due to complex composition of leachate, the comprehensive leachate treatment methods have been not demonstrated. Moreover, the improper management of leachate can lead to many environmental problems. The aim of this study was application of Fenton process for decreasing the major pollutants of landfill leachate on Kermanshah city. The leachate was collected from Kermanshah landfill site and treated by Fenton process. The effect of various parameters including solution pH, Fe2+ and H2O2 dosage, Fe2+/H2O2 molar ratio, and reaction time was investigated. The result showed that with increasing Fe2+ and H2O2 dosage, Fe2+/H2O2 molar ratio, and reaction time, the COD, TOC, TSS, and color removal increased. The maximum COD, TOC, TSS, and color removal were obtained at low pH (pH: 3). The kinetic data were analyzed in term of zero-order, first-order, and second-order expressions. First-order kinetic model described the removal of COD, TOC, TSS, and color from leachate better than two other kinetic models. In spite of extremely difficulty of leachate treatment, the previous results seem rather encouraging on the application of Fenton's oxidation.

Reduction of Cod in Nam Son Landfill Leachate by Electro-Fenton as Secondary Treatment After Electrocoagulation Pretreatment

“…(2)) [26]. This result is similar to the result obtained by Ozcan et al [27] when COD in landfill leachate of municipal solid waste landfill in Kermanshah city (Iran) was treated by EF. From the above results, the optimal pH 3 was chosen for subsequent experiments.…”

“…(1). This trend is also observed in other studies on landfill leachate [27,32].. However, at current above 0.5 A, increase in current only caused a slight raise in COD reduction efficiency ( Figure 5), while brought many disadvantages such as high electric consumption, eroding the surface of carbon felt electrodes and so reduces their service life.…”

Biogas Production from Combined Irish Potato and Poultry Wastes: Optimization and Kinetic Studies

“…The use of Irish potato waste (IPW) and poultry waste (PW) as raw materials for biogas and bio-fertilizer production will reduce the volume of wastes dumped in solid waste disposal sites (SWDs) and the odour emanating from the poultry farms respectively. There have been many previous studies on the optimization and kinetics of biogas production from anaerobic digestion of agricultural slurries and energy crops or organic wastes [12], [13], [14], [15] & [16]. However, there are publications on the optimization and kinetics of biogas production from anaerobic digestion of IPW and PW is scarce.…”

Phenol degradation by Fenton-like process

“…Among the principal variables studied which influence the reaction, it is mentioned the initial pH, concentrations of the reagents H 2 O 2 and Fe 2+ , and reaction time (Ahmadi et al 2005;Rodrigues et al 2008;Hasan et al 2011;Ahmadian et al 2013). Concerning the entitled Fenton-like processes, there are not many reports.…”