Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering vol. 39, no. 3, pp. 787 - 801
Indexed
SCI; SCIE; SCOPUS
Document Type
Article
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 Cu 2+ or Cd 2+ as catalysts resulted in increasing reaction rates. In alkaline conditions, the catalytic effects of Cu 2+ or Cd 2+ were accelerated and Cu 2+ was found to be a more effective catalyst than Cd 2+. The practical relevance of the laboratory oxidation method of cyanide was demonstrated for actual industrial wastewater.