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http://dx.doi.org/10.9713/kcer.2011.49.6.835

Discharge Properties of Torch-Type Atmospheric Pressure Plasma and Its Local Disinfection of Microorganism  

Son, Hyang-Ho (Department of Chemical Engineering, Kangwon National University)
Lee, Won-Gyu (Department of Chemical Engineering, Kangwon National University)
Publication Information
Korean Chemical Engineering Research / v.49, no.6, 2011 , pp. 835-839 More about this Journal
Abstract
The characteristics of torch-type atmospheric pressure plasma and its sterilization effects have been analyzed. The length of plasma flame was varied with the level of applied voltage and the mixture gases composed of argon and oxygen. The effect of plasma flame on the temperature increase of surface treated was limited to $43^{\circ}C$ as a maximum temperature under exposing time of 10 min. The sterilization for E. coli was strongly affected by the applied voltage, the oxygen ratio in the mixture gas and the treatment time. At a high concentration of ozone, the increase of treatment time under the direct contact with plasma flame yields to maximize the effect of the sterilization on E. coli.
Keywords
Torch-type Atmospheric Pressure Plasma; Sterilization; Ozone; Dielectric Barrier Discharge; E. coli;
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