Demonstration of a hermetic airborne ozone disinfection system: Studies on E. Coli

W. J. Kowalski, William P. Bahnfleth, B. A. Striebig, T. S. Whittam

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

An enclosed flow-through system using airborne ozone for disinfection and which removes the ozone with a catalytic converter was tested with a strain of Escherichia coli. Petri dishes containing the microorganisms were inserted in a chamber and exposed for 10–480 min to ozone concentrations between 4 and 20 ppm. Death rates in excess of 99.99% were achieved. Survival data is fitted to a two-stage curve with a shoulder based on the multihit target model. Ozone was removed from the exhaust air to nondetectable levels using a metal oxide based catalyst. The possibility of using ozone as an airborne disinfectant for internal building surfaces and catalytically removing the ozone on exhaust is demonstrated to be feasible. A model for the decay of Bacillus cereus under ozone exposure is proposed as an example for predicting the sterilization of buildings contaminated with anthrax. The potential for disinfecting airstreams and removing ozone to create breathable air is also implied by the results of this experiment.

Original languageEnglish (US)
Pages (from-to)222-227
Number of pages6
JournalAmerican Industrial Hygiene Association Journal
Volume64
Issue number2
DOIs
StatePublished - Mar 1 2003

Fingerprint

Ozone
Disinfection
Escherichia coli
Air
Anthrax
Bacillus cereus
Hermetic
Disinfectants
Oxides
Metals
Mortality

All Science Journal Classification (ASJC) codes

  • Public Health, Environmental and Occupational Health

Cite this

@article{2caaa2a2636443e295e81c7105a15e3b,
title = "Demonstration of a hermetic airborne ozone disinfection system: Studies on E. Coli",
abstract = "An enclosed flow-through system using airborne ozone for disinfection and which removes the ozone with a catalytic converter was tested with a strain of Escherichia coli. Petri dishes containing the microorganisms were inserted in a chamber and exposed for 10–480 min to ozone concentrations between 4 and 20 ppm. Death rates in excess of 99.99{\%} were achieved. Survival data is fitted to a two-stage curve with a shoulder based on the multihit target model. Ozone was removed from the exhaust air to nondetectable levels using a metal oxide based catalyst. The possibility of using ozone as an airborne disinfectant for internal building surfaces and catalytically removing the ozone on exhaust is demonstrated to be feasible. A model for the decay of Bacillus cereus under ozone exposure is proposed as an example for predicting the sterilization of buildings contaminated with anthrax. The potential for disinfecting airstreams and removing ozone to create breathable air is also implied by the results of this experiment.",
author = "Kowalski, {W. J.} and Bahnfleth, {William P.} and Striebig, {B. A.} and Whittam, {T. S.}",
year = "2003",
month = "3",
day = "1",
doi = "10.1080/15428110308984811",
language = "English (US)",
volume = "64",
pages = "222--227",
journal = "Journal of Occupational and Environmental Hygiene",
issn = "1545-9624",
publisher = "Taylor and Francis Ltd.",
number = "2",

}

Demonstration of a hermetic airborne ozone disinfection system : Studies on E. Coli. / Kowalski, W. J.; Bahnfleth, William P.; Striebig, B. A.; Whittam, T. S.

In: American Industrial Hygiene Association Journal, Vol. 64, No. 2, 01.03.2003, p. 222-227.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Demonstration of a hermetic airborne ozone disinfection system

T2 - Studies on E. Coli

AU - Kowalski, W. J.

AU - Bahnfleth, William P.

AU - Striebig, B. A.

AU - Whittam, T. S.

PY - 2003/3/1

Y1 - 2003/3/1

N2 - An enclosed flow-through system using airborne ozone for disinfection and which removes the ozone with a catalytic converter was tested with a strain of Escherichia coli. Petri dishes containing the microorganisms were inserted in a chamber and exposed for 10–480 min to ozone concentrations between 4 and 20 ppm. Death rates in excess of 99.99% were achieved. Survival data is fitted to a two-stage curve with a shoulder based on the multihit target model. Ozone was removed from the exhaust air to nondetectable levels using a metal oxide based catalyst. The possibility of using ozone as an airborne disinfectant for internal building surfaces and catalytically removing the ozone on exhaust is demonstrated to be feasible. A model for the decay of Bacillus cereus under ozone exposure is proposed as an example for predicting the sterilization of buildings contaminated with anthrax. The potential for disinfecting airstreams and removing ozone to create breathable air is also implied by the results of this experiment.

AB - An enclosed flow-through system using airborne ozone for disinfection and which removes the ozone with a catalytic converter was tested with a strain of Escherichia coli. Petri dishes containing the microorganisms were inserted in a chamber and exposed for 10–480 min to ozone concentrations between 4 and 20 ppm. Death rates in excess of 99.99% were achieved. Survival data is fitted to a two-stage curve with a shoulder based on the multihit target model. Ozone was removed from the exhaust air to nondetectable levels using a metal oxide based catalyst. The possibility of using ozone as an airborne disinfectant for internal building surfaces and catalytically removing the ozone on exhaust is demonstrated to be feasible. A model for the decay of Bacillus cereus under ozone exposure is proposed as an example for predicting the sterilization of buildings contaminated with anthrax. The potential for disinfecting airstreams and removing ozone to create breathable air is also implied by the results of this experiment.

UR - http://www.scopus.com/inward/record.url?scp=0038340258&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0038340258&partnerID=8YFLogxK

U2 - 10.1080/15428110308984811

DO - 10.1080/15428110308984811

M3 - Article

C2 - 12688846

AN - SCOPUS:0038340258

VL - 64

SP - 222

EP - 227

JO - Journal of Occupational and Environmental Hygiene

JF - Journal of Occupational and Environmental Hygiene

SN - 1545-9624

IS - 2

ER -