The rate improvement and modeling of trichloroethene photodegradation by acetone sensitizer in surfactant solution

W. K. Choy, Wei Chu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

6 Citations (Scopus)

Abstract

The photodecay of trichloroethene (TCE) in surfactant solution by the help of photosensitizer (acetone, ACE) was investigated and modeled. Apart from the direct photodegradation, photosensitization is presumed to be one of the major mechanisms contributing to overall decay. Quantum yields of TCE photodecay in solution with surfactant Brij 35 and optimal ACE dosage are about 25 times higher than in Brij 35 alone. However, with an excess ACE dosage, ACE will act as a light barrier and attenuate the light intensity available for TCE photodegradation. TCE photodegradation follows a two-stage kinetics, in which a lag phase is followed by a fast decay. Mathematical models were developed for the prediction of the two-stage photodegradation, in which the remaining fraction of TCE (C/C0) in the system becomes predictable.
Original languageEnglish
Pages (from-to)943-947
Number of pages5
JournalChemosphere
Volume44
Issue number5
DOIs
Publication statusPublished - 20 Aug 2001

Keywords

  • Acetone
  • Modeling
  • Photosensitization
  • Surfactant
  • Trichloroethene

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry

Cite this