LIF Observation of Ground-State OH Radicals in DC Nozzle-to-Plane Positive Streamer Corona

2006 ◽  
Vol 9 (2) ◽  
Author(s):  
M. Kocik ◽  
J. Mizeraczyk ◽  
S. Kanazawa ◽  
T. Ohkubo
Keyword(s):  
Steady State ◽  
Corona Discharge ◽  
Ground State ◽  
Atmospheric Pressure ◽  
Electrode System ◽  
Oh Radicals ◽  
Two Dimensional ◽  
Electrode Gap ◽  
Streamer Corona ◽  
Positive Streamer

AbstractIn this study, the planar LIF detection of the hydroxyl (OH) radicals was performed in a nozzle-to-plane electrode system having an electrode gap of 30 mm during the steady-state positive streamer corona discharge at atmospheric pressure. For monitoring the ground-state OH radicals, OH transition at 282 nm was used. The two-dimensional OH distribution in the DC corona discharge in air/H

Characteristics of laser-induced streamer corona discharge in a needle-to-plate electrode system

2002 ◽  
Vol 55 (3-4) ◽  
pp. 343-350 ◽  
Author(s):  
Seiji Kanazawa ◽  
Takeshi Ito ◽  
Yasuyuki Shuto ◽  
Toshikazu Ohkubo ◽  
Yukiharu Nomoto ◽  
...  
Keyword(s):  
Corona Discharge ◽  
Electrode System ◽  
Plate Electrode ◽  
Streamer Corona

Decomposition of VOC in Air Using a Streamer Corona Discharge Reactor Combined with Catalyst

2003 ◽  
Vol 6 (1) ◽  
Author(s):  
Toshikazu Ohkubo ◽  
Duan Li ◽  
Daisuke Yakushiji ◽  
Seiji Kanazawa ◽  
Yukiharu Nomoto
Keyword(s):  
Corona Discharge ◽  
Catalyst Layer ◽  
Type A ◽  
Electrode System ◽  
Plasma Reactors ◽  
Type B ◽  
Type D ◽  
Streamer Corona ◽  
Type C ◽  
Basic Configuration

AbstractIn this study, the improvement in the decomposition of volatile organic compounds (VOCs) was investigated by combining discharge plasma with catalyst. DC streamer corona plasma reactors combined with a catalyst were developed. The basic configuration of the reactors is a multineedle-to-plane mesh electrode system. By changing the position of catalyst against the plasma region, several reactors were developed and compared with each other. As a catalyst, a honeycomb catalyst (Mn type) was tested. A catalyst layer was located between the needles and plane mesh electrodes (type A reactor), or the catalyst layer was placed just behind the mesh electrode (type B reactor). In other reactors, the catalyst layer was followed by the needles-to- plane mesh electrode system (type C reactor) or the catalyst layer was removed (type D reactor). The needles- to-plane mesh electrode system produced the stable streamer corona discharge. The streamers covered the surface of the catalyst layer in the type A and type B reactors. However, the characteristics of the streamer were different for the type A and type B reactors. Toluene (C

Characteristics of Ring-to-Cylinder Type Electrode System on Pulsed Discharge in Water

2002 ◽  
Vol 5 (2) ◽  
Author(s):  
Anto Tri Sugiarto ◽  
Masayuki Sato ◽  
Takayuki Ohshima ◽  
Jan D. Skalny
Keyword(s):  
Corona Discharge ◽  
Organic Contaminants ◽  
Treatment Time ◽  
Water Solution ◽  
Electrode System ◽  
Ring Electrode ◽  
Pulsed Discharge ◽  
Negative Pulse ◽  
Water Conductivity ◽  
Streamer Corona

AbstractThe pulsed streamer corona discharge in water has been investigated for oxidation of organic contaminants in water solution. The reactor with ring-to-cylinder electrode system has been designed and tested in this investigation. It was found that the insulation method of the ring electrode was the most important factor to lower streamer initiation voltage. A large volume of streamer corona discharge was generated around the ring electrode and the streamer corona discharge formations are greatly dependent on the electrode geometry, polarity and the water conductivity. The degradation of phenol was also tested by this electrode system. It was found that the degradation rate of phenol was higher for the positive pulse than that of negative pulse, and the intermediate products were removed when the treatment time increased.

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