title: Use of Fenton reaction for the treatment of leachate from composting of different wastes.
abstract: The oxidation of leachate coming from the composting of two organic wastes (wastewater sludge and organic fraction of municipal solid wastes) using the Fenton's reagent was studied using different ratios [Fe(2+)]/[COD](0) and maintaining a ratio [H(2)O(2)]/[COD](0) equal to 1. The optimal conditions for Fenton reaction were found at a ratio [Fe(2+)]/[COD](0) equal to 0.1. Both leachates were significantly oxidized under these conditions in terms of COD removal (77 and 75% for leachate from wastewater sludge composting and leachate from organic fraction of municipal solid wastes, respectively) and BOD(5) removal (90 and 98% for leachate from wastewater sludge composting and leachate from organic fraction of municipal solid wastes, respectively). Fenton's reagent was found to oxidize preferably biodegradable organic matter of leachate. In consequence, a decrease in the biodegradability of leachates was observed after Fenton treatment for both leachates. Nevertheless, Fenton reaction proved to be a feasible technique for the oxidation of the leachate under study, and it can be considered a suitable treatment for this type of wastewaters.
authors.affiliation: Composting Research Group, Chemical Engineering Department, Escola Tècnica Superior d'Enginyeria, Edifici Q, Universitat Autònoma de Barcelona, Bellaterra, Cerdanyola, 08193 Barcelona, Spain.
authors.forename: Daniel
authors.initials: D
authors.lastname: Trujillo
authors.forename: Xavier
authors.initials: X
authors.lastname: Font
authors.forename: Antoni
authors.initials: A
authors.lastname: Sánchez
mesh_terms: D001673:Biodegradation, Environmental; D002947:Cities; D004785:Environmental Pollutants / Q000302:isolation & purification* / Q000378:metabolism; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D007501:Iron / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry / Q000378:metabolism; D012037:Refuse Disposal / Q000379:methods*; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D004785:Environmental Pollutants; C045076:Fenton's reagent; D007220:Industrial Waste; D006861:Hydrogen Peroxide; D007501:Iron; D010100:Oxygen