Ozone Formation in a Coaxial DC Corona Discharge under Carbon Dioxide Gas Flow

Abstract

Ozone formation has been monitored in DC corona discharges fed by pure carbon dioxide in a flowing regime. Ozone concentrations have been measured for both positive and negative polarities of the discharge. Several different electrical parameters of the discharge have been measured. The onset voltage in the positive corona is approximately 1 kV higher than in a similar negative discharge, however, the maximum ozone concentration and total discharge current were found to be higher in the negative corona discharge. The gas flow rate is shown to influence the CV characteristics within a negative corona but, in contrast, only a marginal effect of flow rate was observed in positive corona. The mobility of both negative and positive charge carriers in the drift region of the discharges have been derived from CV characteristics. magnified image

Experimental investigation and numerical modelling of positive corona discharge: ozone generation

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Soot Oxidation in a Plasma-Catalytic Reactor: A Case Study of Zeolite-Supported Vanadium Catalysts

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4T Analog MOS Control-High Voltage High Frequency (HVHF) Plasma Switching Power Supply for Water Purification in Industrial Applications

“…Plasma requires high voltage high frequency (HVHF) switching power supply as a source. HVHF is being used for many industrial applications [6][7][8], such as water purification, static charge removers, fluorescent tubes, plasma arc welding, plasma cutting, textiles, surface modification [9,10], biomedical applications [11][12][13], plasma displays, radicals, plasma needles [14], corona discharges [15], medical applications, and ozone generators [16]. Medical uses are an exciting new area for plasma applications that can be used in the treatment of diseases and cancer.…”