Oxidative treatment of cyanide in wastewater using hydrogen peroxide and homogeneous catalyst.J Environ Sci Health A Tox Hazard Subst Environ Eng. 2004; 39(3):787-801.JE
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.