Role of UV radiation, solution conductivity and pulse repetition frequency in the bactericidal effects during pulse corona discharge in water

0352872 - ÚFP 2011 RIV CZ eng C - Conference Paper (international conference)
Špetlíková, E. - Janda, V. - Lukeš, Petr - Člupek, Martin
Role of UV radiation, solution conductivity and pulse repetition frequency in the bactericidal effects during pulse corona discharge in water.
WDS’10 Proceedings of Contributed Papers: Part II – Physics of Plasmas and Ionized Media. Prague: MATFYZPRESS, 2010 - (Šafránková, J.; Pavlů, J.), s. 96-100. ISBN 978-80-7378-140-8.
[Annual Student Conference Week of Doctoral Students 2010/19th./. Prague (CZ), 01.06.2010-04.06.2010]
R&D Projects: GA ČR(CZ) GD104/09/H080; GA AV ČR IAAX00430802
Institutional research plan: CEZ:AV0Z20430508
Keywords : corona discharge * ultraviolet radiation * E.coli * E. faecalis
Subject RIV: BL - Plasma and Gas Discharge Physics
http://www.mff.cuni.cz/veda/konference/wds/contents/wds10.htm

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.
Permanent Link: http://hdl.handle.net/11104/0192267