Bactericidal effects of high airborne ozone concentrations on Escherichia coli and Staphylococcus aureus

W. J. Kowalski, W. P. Bahnfleth, T. S. Whittam

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62 Scopus citations

Abstract

The bactericidal effects of high concentrations of airborne ozone were tested against Escherichia coli and Staphylococcus aureus. Petri dishes containing the microorganisms were inserted in a chamber and exposed for 10-480 seconds to ozone concentrations between 300 and 1500 ppm. Death rates in excess of 99.99% were achieved for both species. The mechanism of inactivation accorded with the predictions of first- and second-order kinetics, suggesting that the disinfection action of ozone in air parallels the action of ozone in water.

Original languageEnglish (US)
Pages (from-to)205-221
Number of pages17
JournalOzone: Science and Engineering
Volume20
Issue number3
DOIs
StatePublished - Jan 1 1998

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry

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