Oxidative Treatment of Cyanide in Wastewater Using Hydrogen Peroxide and Homogeneous Catalyst

Tae Yoon Lee, Young Shik Kwon, Dong Su Kim

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

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 Cu 2+ 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.

Original languageEnglish
Pages (from-to)787-801
Number of pages15
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume39
Issue number3
DOIs
StatePublished - Mar 2004

Keywords

  • Catalysts
  • Cyanide
  • Hydrogen peroxide
  • Oxidation
  • Wastewater

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