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Role of UV radiation, solution conductivity and pulse repetition frequency in the bactericidal effects during pulse corona discharge in water
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SYSNO ASEP 0352872 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Role of UV radiation, solution conductivity and pulse repetition frequency in the bactericidal effects during pulse corona discharge in water Author(s) Špetlíková, E. (CZ)
Janda, V. (CZ)
Lukeš, Petr (UFP-V) RID, ORCID
Člupek, Martin (UFP-V) RIDSource Title WDS’10 Proceedings of Contributed Papers: Part II – Physics of Plasmas and Ionized Media, Part II – Physics of Plasmas and Ionized Media. - Prague : MATFYZPRESS, 2010 / Šafránková J. ; Pavlů J. - ISBN 978-80-7378-140-8 Pages s. 96-100 Number of pages 5 s. Publication form web - web Action Annual Student Conference Week of Doctoral Students 2010/19th./ Event date 01.06.2010-04.06.2010 VEvent location Prague Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords corona discharge ; ultraviolet radiation ; E.coli ; E. faecalis Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects GD104/09/H080 GA ČR - Czech Science Foundation (CSF) IAAX00430802 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20430508 - UFP-V (2005-2011) Annotation Inactivation of bacteria Escherichia coli and Enterococcus faecalis by the pulsed corona discharge in liquid phase has been investigated. The reactor with point to plate geometry of electrodes was used for generation of the discharge in liquid phase. The effects of the solution conductivity and the pulse repetition frequency on the bacterial inactivation have been determined. Better efficiency of inactivation was observed for both types of bacteria with the increasing solution conductivity and the pulse repetition frequency since E. faecalis was more sensitive to these changes then E. coli. The role of UV radiation emitted by the electrical discharge in the overall bacterial efficiency was evaluated in dependence on the solution conductivity using UV light transparent spectrometric cell. It was determined that UV radiation contributes about 40% to the overall inactivation of bacteria by the discharge. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2011
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