Pulsed periodic corona discharges for biological decontamination

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

The present paper explores the possibilities of using impulsive and steady-state corona discharges for bio-decontamination operations. A high tension tubular corona electrode was stressed with positive or negative DC voltage with magnitude up to 26 kV, and a grounded mesh was used as an opposite electrode. Different operational regimes of this corona generator were investigated for the production of ozone in air flow and the inactivation of microorganisms. The test microorganism used in this work was E. coli. The results show that corona-generated ozone, and potentially other chemical species, have a strong bactericidal effect, for example positive flashing corona discharges were able to reduce populations of the test microorganism by ~95% within a 30-60 sec time interval. The bactericidal efficiency of different corona discharge modes and its correlation with ozone levels is discussed. The results obtained in this work will help in the design and development of compact plasma systems for environmental applications.
Original languageEnglish
Title of host publicationIEEE conference record PPC2011
Subtitle of host publicationpulsed power conference 2011
Place of PublicationNew York
PublisherIEEE
Pages1155-1159
Number of pages5
ISBN (Print)9781457706295
DOIs
Publication statusPublished - 2011
Event18th IEEE International Pulsed Power Conference - Chicago, United States
Duration: 19 Jun 201123 Jun 2011

Conference

Conference18th IEEE International Pulsed Power Conference
CountryUnited States
CityChicago
Period19/06/1123/06/11

Keywords

  • corona discharges
  • biological decontamination
  • impulsive
  • steady-state
  • tubular corona electrode
  • DC voltage
  • corona generator
  • compact plasma systems
  • corona-generated ozone

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