Bacterial and fungal disinfection via ozonation in air

Emmanuel I. Epelle, Andrew Macfarlane, Michael Cusack, Anthony Burns, Bathini Thissera, William Mackay, Mostafa E. Rateb, Mohammed Yaseen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)
8 Downloads (Pure)

Abstract

Ozone treatment is an eco-friendly and cost-effective approach to achieve material disinfection, and this disinfection method is of utmost importance in the present global pandemic. The efficacy of ozone's oxidative potential on common microorganisms has been extensively studied, particularly in the food and water treatment industries. However, little is still understood regarding its antimicrobial capabilities for the treatment of textile substrates in air. In this study, fabric swatches inoculated with bacterial and fungal suspensions are exposed to ozone for different durations and at different ozone concentrations. Pathogenic bacteria (Escherichia coli, Staphylococcus aureus), and fungi (Aspergillus fumigatus, and Candida albicans), are the microbes utilised in this study. The efficacy of ozone is demonstrated by the complete removal of microbiota on the tested swatches when a concentration and exposure duration of 20 ppm and 4 mins are respectively maintained in a test ozone chamber. We expect the insights from this work to guide the development of new ozonation techniques capable of rapid sterilisation in industrial & public settings.

Original languageEnglish
Article number106431
Number of pages10
JournalJournal of Microbiological Methods
Volume194
Early online date5 Feb 2022
DOIs
Publication statusPublished - 31 Mar 2022

Keywords

  • disinfection
  • ozone concentration
  • treatment duration
  • microbial removal

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