Application of a non-thermal surface plasma discharge in wet condition for gas exhaust treatment: NOx removal

Jolibois, J.; Takashima, Kazunori; Mizuno, Akira

doi:10.1016/j.elstat.2012.03.011

Cited by 64 publications

(22 citation statements)

References 28 publications

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“…In recent years, streamer discharge has been widely researched as an efficient technology for gas treatment processes such as exhaust gas treatment and ozone generation [1][2][3]. However these processes are edge closer to practical use, some obstacles still remain.…”

Section: Introductionmentioning

confidence: 99%

Influence of gas heating and product molecules on discharge characteristics in dry-air-fed ozonizer

Inada

Kijima

Matsumoto

et al. 2013

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

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Influences of gas heating and product molecules on discharge characteristics in dry-air-fed ozonizer was investigated. Especially, the dependence of gas temperature in streamer channel on occurrence frequency of streamer discharge was investigated in detail. In the experiment, repetitive positive or negative impulse streamer was generated respectively between needle-plane electrodes in synthetic air at atmospheric pressure. The repetition rate of the applied pulse voltage was controlled from 0.1 to 7.0 kilo-pulse/sec (kpps). The temperature of streamer channel was estimated from the emission spectrum of N 2 2nd positive system band (0-0). As a result, the gas temperature increased with increasing the pulse repetition rate in both polarities. In the case of positive polarity, the gas temperature increased from 341 to 383 K in response to the increase of repetition rate (0.1 to 6.0 kpps). Eventually, sparkover occurred at 7.0 kpps due to the increase of reduced electric field (E/N) caused by gas heating. The product ozone concentration was saturated with increasing the pulse repetition.

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Section: Introductionmentioning

confidence: 99%

Influence of gas heating and product molecules on discharge characteristics in dry-air-fed ozonizer

Inada

Kijima

Matsumoto

et al. 2013

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

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“…This creates a quasi‐neutral environment containing neutrals, ions, radicals, and electrons. These latter species are responsible for the oxidation of VOC molecules, although ionic reactions are also possible …”

Section: Introductionmentioning

confidence: 99%

“…These latter species are responsible for the oxidation of VOC molecules, although ionic reactions are also possible. [12] Numerous studies [19,20,[31][32][33][34][35] have explored oxidation with different catalysts such as Pt/g-Al 2 O 3, [32] ZrO 2 -Supported Pd Catalysts, [35] TiO 2, [8,22] CeO 2 , ZrO 2 , and MgO. [34] Moreover, several studies have been conducted to show the application of catalytic oxidation for NH 3 removal [31] and for SO 2 oxidation.…”

Section: Introductionmentioning

confidence: 99%

Acceleration of Trimethylamine Removal Process Under Synergistic Effect of Photocatalytic Oxidation and Surface Discharge Plasma Reactor

et al. 2015

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Removal of trimethylamine (TMA) from the air is experimentally investigated by combining photocatalysis with a DBD plasma reactor, at ambient temperature and atmospheric pressure. Many parameters are investigated in this work, such as flowrate, inlet concentration, relative humidity of effluent, and specific energy of discharge. By combining non‐thermal plasma and photocatalysis, a synergy effect on the removal efficiency of TMA has been observed under different experimental conditions. Moreover, we note that adding a photocatalyst in the zone of plasma inhibits ozone formation. The formation of by‐products due to TMA removal is also studied. The identified and analyzed by‐products are classified into four groups: intermediary products, carbon monoxide, carbon dioxide, and ozone and nitrogen oxides.

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“…Furthermore, the more important effect of such collision is that the SO 2 would be decomposed into radicals. Such radicals also can be excited [30]. Then, the irradiation emitted from the wide-range energy upstates of the excited molecules and radicals can be observed and collected.…”

Section: Emission Spectra Diagnosismentioning

confidence: 99%

SO₂Gas Physicochemical Removal through Pulse Streamer Discharge Technique Assisted by Vapor Additive

Wang

Zhang

2015

Journal of Chemistry

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SO2removal has drawn extensive attentions for air pollution treatment. In this paper, the pulse streamer discharge technique is investigated. Emission spectra diagnosis experimentally indicates that the SO2molecule has been physically dissociated into SO and O radicals by electron collision and can be remediated through further chemical reactions during and after discharge. In order to quantitatively analyze the removal physical chemistry kinetics, a zero-dimensional physicochemical reaction model is established. Without H2O vapor additive, the SO2removal efficiency is leanly low and only 0.296% has been achieved under pulse discharge duration of 0.5 μs. Through increasing the electrical concentration six times, the removal efficiency has been slightly heightened to 1.796% at pulse duration of 3 μs. Contrarily, vapor additive can effectively improve the removal kinetics, and removal efficiency has been remarkably heightened to 13.0195% at pulse duration of 0.5 μs with H2O/SO2initial concentration ratio of 0.1 : 1. OH radicals decomposed from H2O through electron collision are the essential factor to achieve such improvement, which have effectively adjusted the chemical removal process to the favorite directions. The major productions have been transformed from HSO3and HOSO2to H2SO4when vapor ratio increased above 1.27 : 1.

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Application of a non-thermal surface plasma discharge in wet condition for gas exhaust treatment: NOx removal

Cited by 64 publications

References 28 publications

Influence of gas heating and product molecules on discharge characteristics in dry-air-fed ozonizer

Influence of gas heating and product molecules on discharge characteristics in dry-air-fed ozonizer

Acceleration of Trimethylamine Removal Process Under Synergistic Effect of Photocatalytic Oxidation and Surface Discharge Plasma Reactor

SO₂Gas Physicochemical Removal through Pulse Streamer Discharge Technique Assisted by Vapor Additive

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Application of a non-thermal surface plasma discharge in wet condition for gas exhaust treatment: NOx removal

Cited by 64 publications

References 28 publications

Influence of gas heating and product molecules on discharge characteristics in dry-air-fed ozonizer

Influence of gas heating and product molecules on discharge characteristics in dry-air-fed ozonizer

Acceleration of Trimethylamine Removal Process Under Synergistic Effect of Photocatalytic Oxidation and Surface Discharge Plasma Reactor

SO2Gas Physicochemical Removal through Pulse Streamer Discharge Technique Assisted by Vapor Additive

Contact Info

Product

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SO₂Gas Physicochemical Removal through Pulse Streamer Discharge Technique Assisted by Vapor Additive