Plasma agents in water and surface decontamination(NATO ,Jasná 2011)

0369923 - ÚFP 2012 RIV SK eng O - Ostatní výsledky
Machala, Z. - Tarabová, B. - Pelach, M. - Hensel, K. - Janda, M. - Špetlíková, E. - Lukeš, Petr
Plasma agents in water and surface decontamination(NATO ,Jasná 2011).
2011
Grant CEP: GA MŠMT(CZ) MEB0810116
Výzkumný záměr: CEZ:AV0Z20430508
Klíčová slova: discharge in air * bacteria * water treatment * electrospraying
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech

Předneseno:NATO Advanced Research Workshop on "Plasma for bio-decontamination, medicine and food security",Jasná,15-18.03.2011,str.45-46; Bio-decontamination of water and surfaces contaminated by bacteria (Salmonella typhimurium, Bacillus cereus, Escherichia coli) was investigated in two types of positive DC discharges in atmospheric pressure air, in needle-to-plane geometry: the streamer corona and the transient spark with short high current pulses of limited energy. Both generate cold non-equilibrium plasma. Electro-spraying of the treated water through the needle electrode resulted in fast bio-decontamination. Experiments providing separation of various biocidal plasma agents, the emission spectra, oxidation stress measurements in the cell membranes, and chemical changes induced in the treated water helped better understanding of the plasma agents responsible for microbial inactivation. Radicals and reactive oxygen species seem to be dominant biocidal agents, although understandin
Trvalý link: http://hdl.handle.net/11104/0203871