Characteristics of nonequilibrium plasma flow and its sterilization efficacy in a tube at atmospheric pressure

Takehiko Sato, Osamu Furuya, Tatsuyuki Nakatani

研究成果: Article査読

4 被引用数 (Scopus)

抄録

A nonequilibrium plasma flow produced uniformly in a tube was developed in this paper. The plasma was generated in polyvinyl chloride tube, 3 mm in inner diameter and 100 mm in length, between a wire electrode, 0.2 mm in diameter, and a grounded flat electrode located at the bottom of the tube. We investigated the spectrum, temperature, and ozone concentration of this plasma flow and its sterilization efficacy against Geobacillus stearothermophilus. The temperature in the tube showed uniformity along the wire electrode and increases as applied voltage was increased. With a wire electrode temperature of 337 K at a peak-to-peak applied voltage of 10 kV in the sine wave and a frequency of 6 kHz, sterilization of 105 cells was obtained. This result suggests the potential of the application of plasma flow rather than ethylene oxide for sterilization of the inner wall of tubes, such as catheters and artificial blood vessels.

本文言語English
ページ(範囲)44-49
ページ数6
ジャーナルIEEE Transactions on Industry Applications
45
1
DOI
出版ステータスPublished - 2009

ASJC Scopus subject areas

  • 制御およびシステム工学
  • 産業および生産工学
  • 電子工学および電気工学

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