Application of an atmospheric dielectric barrier discharge for inactivation of bacteria

Chin, Oi Hoong and Lai, K.L. and Thong, Kwai Lin and Wong, Chiow San (2014) Application of an atmospheric dielectric barrier discharge for inactivation of bacteria. Journal of Science and Technology in the Tropics, 10 (2). pp. 123-129. ISSN 1823-5034 (print version)

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Abstract

An atmospheric pressure dielectric barrier discharge (DBD) system capable of operating under both positively biased voltage pulses at 500 Hz and sinusoidal AC voltage at 8.5 kHz was constructed. The 500 Hz operation produced DBD plasma that was visually more uniform, whilst optical emission from DBD at 8.5 kHz operation was more intense. Though the inactivation of Gram-positive bacteria, Bacillus cereus took longer time than the Gram-negative bacteria, Escherichia coli ATCC 25922 and Salmonella enteritidis, complete sterilization was generally achieved in about 1 minute of DBD plasma treatment.

Item Type: Article
Uncontrolled Keywords: Dielectric barrier discharge; Inactivation of bacteria; Atmospheric pressure discharge
Subjects: Q Science > QC Physics
Q Science > QR Microbiology
Divisions: Faculty of Science > Dept of Physics
Depositing User: Dr Chin Oi Hoong
Date Deposited: 22 Aug 2016 06:12
Last Modified: 06 Dec 2019 06:18
URI: http://eprints.um.edu.my/id/eprint/16273

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