Inactivation of Bioaerosol in Indoor Air by DC Corona Discharge

Y. Kang; H.C. Ying; W.W. Shao; Z.C. Wu

doi:10.4028/www.scientific.net/AMM.496-500.2955

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 496-500Inactivation of Bioaerosol in Indoor Air by DC...

Inactivation of Bioaerosol in Indoor Air by DC Corona Discharge

Abstract:

A novel DC corona discharge technology was applied on inactivation of bioaerosol in indoor air. A wide range of initial concentration of microorganisms (from 35×10⁴ CFU/m³ to 3×10⁶ CFU/m³) was tested to show excellent germicidal properties for its high inactivation efficiency. Over 99.997% of microbe into the reactor were inactivated at t=150s, E_P 2kV/cm and initial population was 3.0×10⁶ CFU/m³. The effects of active species produced by a DC corona discharge on the inactivation of a mixture of bacteria in flowing aerosol were proved. The active radicals like OH radical which acted on microbes in the way of direct oxidation were the most significant factors influencing the microbe inactive efficiency through the assessment of heat variety, ultraviolet emission and ozones generation. The active radicals generation in the process of sterilization can be simply controlled by regulating applied voltage before ozone generated. The results indicate that use DC corona discharge technology in the future application of indoor air decontamination.

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Periodical:

Applied Mechanics and Materials (Volumes 496-500)

Pages:

2955-2958

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https://doi.org/10.4028/www.scientific.net/AMM.496-500.2955

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Online since:

January 2014

Authors:

Y. Kang, H.C. Ying, W.W. Shao, Z.C. Wu

Keywords:

Bioaerosol, DC Corona Discharge, Inactivation

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