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Analysis of sterilization effect by pulsed dielectric barrier discharge

Authors
 Jai Hyuk Choi  ;  Inho Hana  ;  Hong Koo Baik  ;  Mi Hee Lee  ;  Dong-Wook Han  ;  Jong-Chul Park  ;  In-Seob Lee  ;  Kie Moon Song  ;  Yong Sik Lim 
Citation
 JOURNAL OF ELECTROSTATICS, Vol.64(1) : 17-22, 2006 
Journal Title
 JOURNAL OF ELECTROSTATICS 
ISSN
 0304-3886 
Issue Date
2006
Keywords
Plasma ; Sterilization ; Dielectric barrier discharge
Abstract
Atmospheric pressure (AP) plasmas can sterilize against almost all kinds of bacteria because many ions and reactive species, such as oxygen atoms and ozone, etc., are generated during AP plasmas. So AP plasmas are proper processes for application to air cleaners and sterilizers. The aim of this paper is to evaluate a germicidal effect caused by pulsed plasma system in air utilizing a dielectric barrier discharge (DBD) type reactor incorporating alumina, glass, etc. Escherichia coli, Bacillus subtilis and Pseudomonas aeruginosa bacteria were used for this sterilization experiment. For analysis of the relationship between sterilization results and chemical species generated in the discharge, we used optical emission spectroscopy and we checked emission spectra by atomic oxygen (394.2 and 436.8 nm) and second positive system of nitrogen (337.1 nm). Experimental results showed that DBD treatment during 70 s sterilized E. coli with 99.99% effectively and ozone molecules were the dominant germicidal species. From these results we concluded that the pulsed DBD system is very effective for sterilization.
Full Text
http://www.sciencedirect.com/science/article/pii/S0304388605001476
DOI
10.1016/j.elstat.2005.04.001
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Medical Engineering (의학공학교실) > 1. Journal Papers
Yonsei Authors
Park, Jong Chul(박종철) ORCID logo https://orcid.org/0000-0003-0083-5991
Lee, Mi Hee(이미희) ORCID logo https://orcid.org/0000-0002-9630-7044
Han, Dong Wook(한동욱)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/110844
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