The Influence of Parameters of Stabilized Corona Discharge on its Microbicidal Effect

Abstract

This work presents the study of microbicidal effects of positive flashing corona, negative pulseless corona and glow corona discharges and the comparison of their efficiency in the point-to-plane arrangement in water suspension. The flashing corona seems to be the most effective one, however the interval of optimal parameters is wide. The total inhibition of microorganisms becomes after 75 s or 8-10 min of exposition for bacteria or yeast, respectively. A hypothesis explaining the different sensitivity of various microbes is postulated.

Inactivation of Prions Using Electrical DC Discharges at Atmospheric Pressure and Ambient Temperature

“…Our study does not exclude the effectiveness of positive streamer against prions. It is possible that its ability to inactivate prions may surpass the effect of negative corona discharge, as it did in its effect against bacteria 41. However, to compare these two treatments, another system to detect prion infectivity must be employed.…”

Microbial Inactivation by Electric Discharge with Metallic Grid

“…in [15]; a paragraph devoted to action to bacteria is involved also in [6]; recently, a book devoted to this topic was also edited [7]. The non-thermal plasma for this purpose was mostly produced in air by dielectric barrier discharges, gliding arc, plasma torches and various corona discharges; we compared microbicidal properties of various corona discharges in [8]. In other papers [9,10] we reported a new type of jet-like point-to--point DC electric discharge produced in atmospheric air and named cometary.…”

NanoSIMS50 analyses of Ar/18O2plasma-treatedEscherichia colibacteria

“…Energy dissipation in plasmas leads to the formation of electrical charges, excited neutral species, radicals, photons and gas heating, among others, and all these components can play an important and synergetic role in decontamination processes [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Nevertheless, interaction mechanisms between plasmas and micro-organisms are still not fully understood [1,16,17].…”