Catalytic ozonation of PCE by clay from tidal flat sediments

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

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Clay from tidal flat sediments showed an efficient catalytic activity in the decomposition of PCE by ozonation where the thermal treatment of clay enhanced the catalytic activity. No changes in XRD patterns of clays by the thermal treatment were observed, while EPR spectra were significantly changed. The intensity of the EPR signal that arises from natural radiation defect was decreased with increasing thermal treatment temperature, which enhanced the PCE removal efficiency. Contrary to ozonation alone, superoxide radicals were detected from ozonation in the presence of clay. This suggests that the superoxide radicals further increase PCE decomposition.

Original languageEnglish
Pages (from-to)77-79
Number of pages3
JournalCatalysis Letters
Volume78
Issue number1-4
DOIs
Publication statusPublished - 2002 Mar
Externally publishedYes

Keywords

  • Catalyst
  • Clay
  • EPR
  • Ozonation
  • PCE

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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