Destruction rate of volatile organochlorine compounds in water by ozonation with ultraviolet radiation

Katsuki Kusakabe, Shinji Aso, Toshiya Wada, Jun Ichiro Hayashi, Shigeharu Morooka, Kazuaki Isomura

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Rates of ozonation of 1,1,1-trichloroethane, trichloroethylene and tetrachloroethylene were measured in a rectangular thin channel reactor with a continuous flow of reactants under u.v. irradiation. These substances were chosen as model compounds of pollutants in groundwaters. The solution was buffered with KH2PO4-Na2HPO4 at pH = 6.9. The destruction rates were proportional to the dissolved ozone concentration and the u.v. intensity in the reactor. The u.v. irradiation of 8 W m-2 at 253.7 nm enhanced the destruction rate of the organochlorine compounds by more than ten times that of the ozonation without u.v. irradiation. The activation energy for the decomposition of 1,1,1-trichloroethane decreased with increasing u.v. intensity. No volatile organochlorine compounds were newly formed in these reactions.

Original languageEnglish
Pages (from-to)1199-1203
Number of pages5
JournalWater Research
Volume25
Issue number10
DOIs
Publication statusPublished - Oct 1991

All Science Journal Classification (ASJC) codes

  • Ecological Modelling
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution

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