title: [Degradation kinetics of ozone oxidation on high concentration of humic substances].
abstract: Humic substance oxidation (HS) degradation by ozone was kinetically investigated. The effects of O3 dosage, initial pH, temperature and initial concentration of HS were studied. Under the conditions of 3.46 g x h(-1) ozone dosage, 1 000 mg x L(-1) initial HS, 8.0 initial pH and 303 K temperature, the removal efficiencies of HS achieved 89.04% at 30 min. The empirical kinetic equation of ozonation degradation for landfill leachate under the conditions of 1.52-6.10 g x h(-1) ozone dosage, 250-1 000 mg x L(-1) initial HS, 2.0-10.0 initial pH, 283-323 K temperature fitted well with the experimental data (average relative error is 7.62%), with low activation energy E(a) = 1.43 x 10(4)J x mol(-1).
authors.affiliation: College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, China. easonzk@126.com
authors.forename: Ke
authors.initials: K
authors.lastname: Zheng
authors.forename: Shao-Qi
authors.initials: SQ
authors.lastname: Zhou
authors.forename: Mei-Mei
authors.initials: MM
authors.lastname: Yang
mesh_terms: D006812:Humic Substances / Q000032:analysis*; D017665:Hydroxyl Radical / Q000737:chemistry; D007700:Kinetics; D010084:Oxidation-Reduction; D010126:Ozone / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry*
chemical_list: D006812:Humic Substances; D017665:Hydroxyl Radical; D010126:Ozone; D062065:Wastewater