TY - JOUR
T1 - Characteristics of nonequilibrium plasma flow and its sterilization efficacy in a tube at atmospheric pressure
AU - Sato, Takehiko
AU - Furuya, Osamu
AU - Nakatani, Tatsuyuki
N1 - Funding Information:
Paper MSDAD-08-12, presented at the 2006 ESA/IEEE/IEJ/SFE Joint Conference on Electrostatics, Berkeley, CA, June 20–23, and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS by the Electrostatic Processes Committee of the IEEE Industry Applications Society. Manuscript submitted for review October 15, 2006, and released for publication May 5, 2008. Current version published January 21, 2009. This work was supported in part by the Japan Society for the Promotion of Science under Grant-in-Aid for Scientific Research (C) 17560135 and in part by a grant from the Institute of Fluid Science, Tohoku University, Sendai, Japan.
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
KW - Air
KW - Atmospheric pressure
KW - Dielectric barrier discharge (DBD)
KW - Low temperature
KW - Plasma flow
KW - Sterilization
KW - Tube
UR - http://www.scopus.com/inward/record.url?scp=59649085391&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=59649085391&partnerID=8YFLogxK
U2 - 10.1109/TIA.2008.2009660
DO - 10.1109/TIA.2008.2009660
M3 - Article
AN - SCOPUS:59649085391
VL - 45
SP - 44
EP - 49
JO - IEEE Transactions on Applications and Industry
JF - IEEE Transactions on Applications and Industry
SN - 0093-9994
IS - 1
ER -