Generation process and sterilization effect of OH radical in a steam plasma flow at atmospheric pressure for a plasma autoclave

Takehiko Sato, Takeshi Furui

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The reactive flow field and the mechanism of sterilization by steam plasma flow at atmospheric pressure were clarified to develop a new sterilization system by experimental and computational methods. The emission lines of OH, whose intensity increased with increased applied voltage and frequency, were observed in the discharge region. The OH radical finally changed to H2O2 in the condensed water. The OH radical was capable of sterilizing spores of Geobacillus stearothermophilus, although the condensed water did not have such effect. The discharge process was clarified with an axisymmetric, non-Maxwellian model. The OH radical was generated by a wire electrode toward the ground electrode, and the concentration of H2O2 increased after streamer propagation.

Original languageEnglish
Pages (from-to)299-314
Number of pages16
JournalPlasma Medicine
Volume5
Issue number2-4
DOIs
Publication statusPublished - 2015 Jan 1

Keywords

  • Computational analysis
  • Dielectric barrier discharges (DBD)
  • Sterilization

ASJC Scopus subject areas

  • Biomedical Engineering
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Generation process and sterilization effect of OH radical in a steam plasma flow at atmospheric pressure for a plasma autoclave'. Together they form a unique fingerprint.

Cite this