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Abstrakt: Generation of dissolved ozone (O3) and hydrogen peroxide (H2O2) in water, bubbling
and foaming systems by a pulse powered electric discharge was studied. The concentrations
of the species in the systems increased with operation time and a pulse repetition rate. In
the foaming column generation of more than 70 mg/l H2O2 was observed after 20 minutes
of discharge operation. The concentration of H2O2 was an order of the magnitude bigger
than in the case of the bubbling column and two orders of the magnitude bigger than in
the case of still water. The highest concentration of dissolved O3 (2.17 mg/l) was obtained
in the bubbling system, after 20 minutes of discharge operation at 90 Hz pulse repetition
rate. Similar results were achieved also in the foaming column. However, the amount of
dissolved ozone in still water was only 0.97 mg/l. Due to the effective overall generation of
the oxidants, the system of foaming column provided the best results also in indigo blue
treatment.
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Citácie: | 1.) | H. E. Delgado, G. H. Brown, D. M. Bartels, P. Rumbach, D. Go: The scaling of kinetic and transport behaviors in the solution-phase chemistry of a plasma–liquid interface, J. Appl. Phys. 129, 083303 (2021), citation no. 21, WoS
(2021)
------------- | | 2.) | D. T. Elg, H. E. Delgado, D. C. Martin, R. M. Sankaran, P. Rumbach, D. M. Bartels, D. B. Go: Recent advances in understanding the role of solvated electrons at the plasma-liquid interface of solution-based gas discharges, Spectrochimica Acta Part B: Atomic Spectrosc. 186, 106307 (2021), citation no. 34, INDEX
(2021)
------------- | | 3.) | N. Kashapov, R. Kashapov, L. Kashapov: Influence of the electrolytic cathode temperature on the self-sustaining mechanism of plasma-electrolyte discharge, J. Phys. D. Appl. Phys. 51 (49), 494003 (2018), citation no. 28, WoS/SCOPUS
(2018)
------------- | | 4.) | V. V. Rybkin, D. A. Shutov: Atmospheric-pressure electric discharge as an instrument of chemical activation of water solutions, Plasma Physics Reports, 43 (11), 1089-1113 (2017), citation no. 35, WoS/SCOPUS
(2017)
------------- | | 5.) | P. Lukeš, B. R. Locke, J. L. Brisset: Aqueous-phase chemistry of electrical discharge plasma in water and in gas-liquid environments in Plasma Chemistry and Catalysis in Gases and Liquids (edited by V. I. Parvulescu, M. Magureanu, P. Lukeš), Wiley, Weinheim, Germany, 241 (2012), citation no. 183, SCOPUS
(2012)
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