Catalytic ozonation of PCE by clay from tidal flat sediments

Hung H. Chung, Jinho Jung, Jeong H. Yoon, Myun J. Lee

Research output: Contribution to journalArticle

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 1
Externally publishedYes

Fingerprint

tidal flats
Ozonization
clays
Sediments
Clay
sediments
inorganic peroxides
Heat treatment
Superoxides
Paramagnetic resonance
catalytic activity
Catalyst activity
Decomposition
decomposition
Radiation
Defects
clay
defects
radiation
Temperature

Keywords

  • Catalyst
  • Clay
  • EPR
  • Ozonation
  • PCE

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

Cite this

Catalytic ozonation of PCE by clay from tidal flat sediments. / Chung, Hung H.; Jung, Jinho; Yoon, Jeong H.; Lee, Myun J.

In: Catalysis Letters, Vol. 78, No. 1-4, 01.03.2002, p. 77-79.

Research output: Contribution to journalArticle

Chung, Hung H. ; Jung, Jinho ; Yoon, Jeong H. ; Lee, Myun J. / Catalytic ozonation of PCE by clay from tidal flat sediments. In: Catalysis Letters. 2002 ; Vol. 78, No. 1-4. pp. 77-79.
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