title: Oxidative treatment of cyanide in wastewater using hydrogen peroxide and homogeneous catalyst.
abstract: Batch kinetic tests were conducted to determine the effects of experimental conditions and catalysts on cyanide degradation. Cyanide degradation by hydrogen peroxide was found to follow first-order kinetics. Reaction rates increased with increasing pH and decreasing temperature. The activation energy for cyanide degradation by hydrogen peroxide was found to be -13.81 kJ/mol. The addition of Cu2+ or Cd2+ as catalysts resulted in increasing reaction rates. In alkaline conditions, the catalytic effects of Cu2+ or Cd2+ were accelerated and Cu2+ was found to be a more effective catalyst than Cd2+. The practical relevance of the laboratory oxidation method of cyanide was demonstrated for actual industrial wastewater.
authors.affiliation: Department of Environmental Science and Engineering, Ewha Womans University, Seoul, Korea.
authors.forename: Tae-Yoon
authors.initials: TY
authors.lastname: Lee
authors.forename: Young-Shik
authors.initials: YS
authors.lastname: Kwon
authors.forename: Dong-Su
authors.initials: DS
authors.lastname: Kim
mesh_terms: D002384:Catalysis; D003486:Cyanides / Q000737:chemistry*; D006801:Humans; D006861:Hydrogen Peroxide / Q000737:chemistry*; D010084:Oxidation-Reduction; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical
chemical_list: D003486:Cyanides; D014874:Water Pollutants, Chemical; D006861:Hydrogen Peroxide