title: Removal of COD and color from livestock wastewater by the Fenton method.
abstract: The Fenton method was applied to the removal of chemical oxygen demand using chromate (CODcr) and color from high-strength livestock wastewater in which the initial CODcr was 5000-5700 mg/L. The optimum ratio of H2O2 (mg/L) to the initial CODcr was 1.05 and the optimum molar ratio of H2O2/Fe2+ was 2. The optimum initial pH and the optimum reaction time were 3.5-4 and 30 min, respectively. Under optimal conditions, the removal ratios of CODcr and color of the supernatant after static precipitation of the produced sludge were 88 and 95.4%, respectively. Addition of Fenton's reagents in several aliquots did not affect the efficiencies of CODcr and color removal.
authors.affiliation: Chemical Resources Laboratory, Tokyo Institute of Technology, R1-29, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
authors.forename: Hyunhee
authors.initials: H
authors.lastname: Lee
authors.forename: Makoto
authors.initials: M
authors.lastname: Shoda
mesh_terms: D000822:Animal Husbandry; D000818:Animals; D000829:Animals, Domestic; D003116:Color; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007501:Iron / Q000737:chemistry*; D016877:Oxidants / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D016877:Oxidants; D006861:Hydrogen Peroxide; D007501:Iron; D010100:Oxygen