A ceramic-based ozonizer using high-frequency discharge

Masuda, S.; Akutsu, Katsumi; Kuroda, Masayuki; Awatsu, Y.; Shibuya, Yuki

doi:10.1109/28.2860

Cited by 160 publications

(58 citation statements)

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“…It is also used as a plasma-based chemical reactor in many environmental applications, such as ozone production [8][9][10], NOx conversion [11], decomposition of VOCs [12,13], inactivation of microorganisms, and killing bacteria [14][15][16][17]. The reasons for growing the interest in SDBD and making it more efficient than conventional dielectric barrier discharge (DBD), wherein the plasma is generated in the volume between the discharge and the grounded electrodes, could be as follows: (1) the reduction of the applied voltage and the increase in the power efficiency [18]; (2) the availability of the free space over the plasma zone that allows the ozone to accumulate without destructing it by a high temperature of the plasma channels or the collisions with reactive species in the plasma zone, [19]; (3) high energy efficiency to produce reactive species, which exceeds that of volume DBD [9,20]; and (4) operation in ambient air without requiring a noble gas admixture [21].…”

Section: Introductionmentioning

confidence: 99%

Characterization of surface dielectric barrier discharge influenced by intermediate frequency for ozone production

Abdelaziz

Ishijima

Seto

et al. 2016

Plasma Sources Sci. Technol.

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The aim of this study is to investigate the effect of the intermediate frequency (1-10 kHz) of the sinusoidal driving voltage on the characteristics of a developed surface dielectric barrier discharge (SDBD)-based reactor having spikes on its discharge electrode. Moreover, its influence on the production of ozone and nitrogen oxide byproducts is evaluated. The results show that SDBD is operated in the filamentary mode at all the frequencies. Nevertheless, the pulses of the discharge current at high frequencies are much denser and have higher amplitudes than those at low frequencies. The analysis of the power consumed in the reactor shows that a small portion of the input power is dissipated in the dielectric material of SDBD source, whereas the major part of the power is consumed in the plasma discharge. The results of the ozone production show that higher frequencies have a slightly adverse effect on the ozone production at relatively high energy density values, where the ozone concentration is slightly decreased when the frequency is increased at the same energy density. The temperature of the discharge channels and gas is not a crucial factor for the decomposition of ozone in this reactor, while the results of the measurements of nitrogen oxides characteristics 2 indicate that the formation of NO and NO 2 has a significant adverse effect on the production efficiency of ozone due to their oxidation to another nitrogen oxides and their catalytic effect.

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Section: Introductionmentioning

confidence: 99%

Characterization of surface dielectric barrier discharge influenced by intermediate frequency for ozone production

Abdelaziz

Ishijima

Seto

et al. 2016

Plasma Sources Sci. Technol.

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show abstract

“…In efficient ozonizers with dry air this NO, concentration is about one percent that of ozone [3]. Though total NO, and ozone formation are reportedly insensitive to humidity, [3] and [4], we observed significant nitric acid and NO, formation, and reduced ozone production, in our ozonizer discharge after steam and fog were introduced. This may be due to the combined electrical and aqueous chemical effects of water droplets in the discharge.…”

Section: Methodsmentioning

confidence: 68%

Radical oxidation automotive de-NO{sub x}

Chang¹,

Garcı́a²

1995

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“…Using a surface discharge in oxygen at 10 kHz, best result reported by Masuda et al in pure oxygen was a yield of 170 g/kWh [29] with a high level of ozone production of 5 to 10 %. Pietsch in O 2 and in air respectively, using dielectric barrier discharges [30].…”

Section: Ieee Electrical Insulation Magazinementioning

confidence: 98%