Photolytic properties of a pulsed discharge in water

Plasma Chemical Reactor with Exploding Water Jet

“…The calculations were performed using the dissociation constant of 2.61 -12 mole/l. These results are in a good agreement with measurements [17], where a monotonic increase of M H2O2 from 1 to 4.6 mg/l was obtained using the pulsed discharge in distilled water with the range of specific energy input variation E w from 1 to 11 J/cm 3 .…”

“…Increase of E w to 27 J/cm 3 leads to a monotonic drop of the pH index from 7 to 4.5 (Table 2). Hydrogen peroxide is formed during a photolysis of water [17]. A concentration of hydrogen peroxide can be evaluated using the standard method based on pH measurements.…”

“…Visually the jet can be observed using smoke admixture. The gas flow rate was controlled and metered by a rotameter (17). The processed gas was directed out of the reactor using the tube in the reactor bottom and then collected in a sampling plastic bag (18) for a subsequent analysis.…”

Antimicrobial action of a discharge with a liquid cathode on the electrode liquid

“…Atmospheric pressure plasma is the most promising, since no vacuum instrumentation is required to generate it. Disinfec tion of water by electric discharges is being investi gated, which produce NLP either in the liquid [3][4][5][6] or above its surface; the flow of recombinating plasma as a disinfecting method is also studied [6][7][8]. Different types of discharge are used for generat ing NLP: pulsed arcs, barrier and spark discharges, high frequency discharges, etc.…”

“…Furthermore, DLNE produces a stronger UV radiation [14], unlike discharges in dry air [2,13]. There is still no common opinion on the question which factors produced by electric discharges (waves of compression, UV radia tion, products of erosion of the electrode material) and by the discharge generated NLP (electrically charged particles, chemically active radicals and compounds) possess an antimicrobial effect [3,6]. It is often stated that the antimicrobial effect is a result of synergetic interaction of several of the abovementioned factors.…”