Effect of dissolved metal ions on PCE decomposition by gamma-rays

Hung Ho Chung, Jinho Jung, Jeong Ho Yoon, Myun Joo Lee

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This study investigates the effect of initial tetrachloroethylene (PCE) concentration, irradiation dose and dissolved metal ions such as Cr3+, Mn2+, Fe3+, Co2+, Ni2+, Cu2+ and Zn2+ on removal of PCE by gamma irradiation. The amount of removed PCE decreased with increase in initial PCE concentration and increased with increase in irradiation dose. PCE removal reached a maximum in the presence of Fe3+, while Cu2+ strongly hindered PCE decomposition. Except for Cu2+, the amount of removed PCE in the presence of metal ions was linearly dependent on the standard reduction potential of the metal ions. The extraordinary inhibition of Cu2+ in PCE removal was caused by the action of Cu2+ as a strong OH scavenger, that was directly confirmed by electron paramagnetic resonance spectroscopy.

Original languageEnglish
Pages (from-to)977-980
Number of pages4
JournalChemosphere
Volume47
Issue number9
DOIs
Publication statusPublished - 2002 Jun 3

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Keywords

  • EPR
  • Gamma-rays
  • Metal ions
  • Oxidation
  • PCE
  • Water

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis

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