Removal of Toluene by Dielectric Barrier Discharge Combined with Modified Photocatalyst

2015 ◽  
Vol 737 ◽  
pp. 561-564
Author(s):  
Jing Xin Li ◽  
Bao Hui Li ◽  
Zhi Yong Li
Keyword(s):  
Energy Efficiency ◽  
Dielectric Barrier Discharge ◽  
Flow Rate ◽  
Gas Flow ◽  
Barrier Discharge ◽  
Gas Flow Rate ◽  
Dielectric Barrier ◽  
Optimal Doping ◽  
Initial Concentration ◽  
Doping Ratio

The toluene being removed by dielectric barrier discharge (DBD) combined with modified photocatalyst was studied in the paper. Transition metal manganese was doped into crystal lattice of TiO2 in order to improve the activity of photocatalyst, and the optimal doping ratio was confirmed in the study. As one of main factors, the influence on toluene removal efficiency of gas flow rate, initial concentration and electric field intensity was analyzed in the study. Furthermore, the energy efficiency was another important index which had been compared amongγ-Al2O3, TiO2/γ-Al2O3 and Mn-TiO2/γ-Al2O3. The result of study showed that DBD combined with Mn-TiO2/γ-Al2O3 had the best buffer action against increasing of gas flow rate and initial concentration, the energy efficiency had the tendency as Mn-TiO2/γ-Al2O3 > TiO2/γ-Al2O3>γ-Al2O3, and the optimal doping ratio of manganese was 0.01.

Oligomerization of Carbon Monoxide in Plasma of the Dielectric Barrier Discharge

2016 ◽  
Vol 685 ◽  
pp. 635-638
Author(s):  
E. Litvishko ◽  
M. Goreshnev ◽  
Larisa Maletina
Keyword(s):  
Carbon Monoxide ◽  
Dielectric Barrier Discharge ◽  
Flow Rate ◽  
Gas Flow ◽  
Barrier Discharge ◽  
Methane Formation ◽  
Gas Flow Rate ◽  
Dielectric Barrier

Influence of plasma dielectric barrier discharge on oligomerization of carbon monoxide was shown. The ratio of CO and H2 was equal to 2: 1. Gas flow-rate was 3 cm3/s for H2 and 6 sm3/s for CO. It was found that methane formation is 1.2% at parameters of dielectric barrier discharge of 0.1 J. per pulse, up to 2000 pulse per second.

Simultaneous Decomposition of Diesel Particulate Material and NOx Using Dielectric Barrier Discharge

2006 ◽  
Vol 9 (2) ◽  
Author(s):  
Yukihiko Yamagata ◽  
Koichiro Niho ◽  
Toshifumi Jono ◽  
Yozo Kawagashira ◽  
Katsunori Muraoka
Keyword(s):  
Dielectric Barrier Discharge ◽  
Gas Flow ◽  
Barrier Discharge ◽  
Particulate Material ◽  
Nitric Oxides ◽  
Closed Space ◽  
Gas Flow Rate ◽  
Diesel Particulate ◽  
Dielectric Barrier ◽  
A New Technique

AbstractWe propose a new technique for simultaneous decomposition of diesel particulate material (DPM) and nitric oxides (NOx) exhausted from a diesel engine. DPM and NOx are collected in a reactor using an electrostatic precipitation and a honeycomb-shaped adsorbent, respectively. After the sufficient collections, a dielectric barrier discharge (DBD) is generated in the closed space to condense and decompose DPM and NOx. DPM and NOx were decomposed simultaneously and effectively by the DBD, which act as the oxidant and reductant, respectively. It is considered that this technique is the most suitable for the decomposition of DPM and NOx with small concentration and high gas flow rate.

Products Yield and Energy Efficiency of Dielectric Barrier Discharge for NO Conversion: Effect of O2 Content, NO Concentration, and Flow Rate

2017 ◽  
Vol 31 (9) ◽  
pp. 9675-9683 ◽  
Author(s):  
Jiangen Wang ◽  
Honghong Yi ◽  
Xiaolong Tang ◽  
Shunzheng Zhao ◽  
Fengyu Gao ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Dielectric Barrier Discharge ◽  
Flow Rate ◽  
Barrier Discharge ◽  
Dielectric Barrier ◽  
No Conversion

Abatement of Toluene by Non-Thermal Plasma Combined with Photocatalyst

2014 ◽  
Vol 955-959 ◽  
pp. 2147-2150
Author(s):  
Jing Xin Li ◽  
Yan Cheng Peng ◽  
Xin Zhang
Keyword(s):  
Energy Efficiency ◽  
Flow Rate ◽  
Thermal Plasma ◽  
Electric Field Intensity ◽  
Gas Flow ◽  
Gas Flow Rate ◽  
Initial Concentration ◽  
Important Index ◽  
Non Thermal Plasma ◽  
Main Factors

The toluene being abatement by non-thermal plasma combined with photocatalyst was studied in the paper. As one of main factors, the influence on toluene abatement efficiency of gas flow rate, initial concentration and electric field intensity was analyzed in the study. Furthermore, the energy efficiency was another important index which had been compared among the different padding including of no padding, γ-Al2O3 padding and TiO2/γ-Al2O3 padding. The result of study showed that the technology of non-thermal plasma combined with photocatalyst had better buffer action against increasing of gas flow rate and initial concentration. When the abatement efficiency was more than 52%, the energy efficiency values had the tendency as TiO2/γ-Al2O3 >γ-Al2O3 padding > no padding.

Degradation of Organophosphorus Pesticide in a Packed-Bed Plasma Reactor: Effects of Operating Parameters and Kinetics Study

2013 ◽  
Vol 781-784 ◽  
pp. 1637-1645 ◽  
Author(s):  
Ting Jun Ma ◽  
Yi Qing Xu
Keyword(s):  
Removal Efficiency ◽  
Flow Rate ◽  
Gas Flow ◽  
Plasma Reactor ◽  
Organophosphorus Pesticide ◽  
Packed Bed ◽  
Pulse Frequency ◽  
Gas Flow Rate ◽  
Peak Voltage ◽  
Initial Concentration

The degradation effectiveness and reaction kinetics of representative organophosphorus (OP) pesticide in a packed-bed plasma reactor have been studied. Important parameters, including peak voltage, pulse frequency, gas-flow rate, initial concentration, diameter of catalyst particles, and thickness of catalyst bed which influences the removal efficiency, were investigated. Experimental results indicated that rogor removal efficiency as high as 80% can be achieved at 35 kV with the gas flow rate of 800 mL/min and initial concentration of 11.2 mg/m3.The removal efficiency increased with the increase of pulsed high voltage, and pulse frequency, the decrease of the diameter of catalyst particles and the thickness of catalyst bed. Finally, a model was established to predict the degradation of the rogor, which generally can simulate the experimental measurements to some degree.

Degradation of Sarin Simulant DFP by Dielectric Barrier Discharge Plasma

2013 ◽  
Vol 781-784 ◽  
pp. 55-58 ◽  
Author(s):  
Hong Jie Zhao ◽  
Zhen Hu ◽  
Zhan Guo Li
Keyword(s):  
Gas Flow ◽  
Discharge Plasma ◽  
Barrier Discharge ◽  
Degradation Efficiency ◽  
Dielectric Barrier Discharge Plasma ◽  
Dielectric Barrier ◽  
Initial Concentration ◽  
Barrier Discharge Plasma ◽  
Carrier Gas Flow ◽  
Gas Flow Velocity

The Dielectric Barrier Discharge plasma (DBD) plasma was used to treat Diisopropyl fluorophosphate (DFP, a stimulant of sarin) in the air. The influence factors of degradation efficiency, including power, carrier gas flow velocity and initial concentration of DFP were investigated. As a result, the degradation efficiency increased with the power increasing. The degradation efficiency increased fastly when the power less than 105W, but slowly when the power more than 105W. The degradation efficiency decreased obviously with the carrier gas flow velocity increasing, because the time of DFP stayed in plasma reactor decreased and the concentration of DFP increased. The degradation efficiency rose firstly and then fell with the initial DFP increasing, when the initial concentration was less than 80 mg/m3, but decreased with the the initial concentration increasing, when the initial concentration was more than 80 mg/m3. The main products were acetone, isopropanol, phosphoric acid, pyrophosphoric acid, carbon dioxide and water, analyzed by GC-MS. Reaction mechanism was discussed according to degradation products.

The effects of gas flow pattern on the generation of ozone in surface dielectric barrier discharge

2019 ◽  
Vol 21 (5) ◽  
pp. 055505 ◽  
Author(s):  
Songru XIE ◽  
Yong HE ◽  
Dingkun YUAN ◽  
Zhihua WANG ◽  
Sunel KUMAR ◽  
...  
Keyword(s):  
Flow Pattern ◽  
Dielectric Barrier Discharge ◽  
Gas Flow ◽  
Barrier Discharge ◽  
Dielectric Barrier ◽  
Surface Dielectric Barrier Discharge
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