scholarly journals Characteristics and mechanism of toluene removal by double dielectric barrier discharge combined with an Fe2O3/TiO2/γ-Al2O3 catalyst

RSC Advances ◽  
2020 ◽  
Vol 10 (68) ◽  
pp. 41511-41522
Author(s):  
Rui Wang ◽  
Jiaze Ren ◽  
Jiangyou Wu ◽  
Lanlan Wu
Keyword(s):  
Dielectric Barrier Discharge ◽  
Removal Efficiency ◽  
Barrier Discharge ◽  
Dielectric Barrier ◽  
Toluene Removal ◽  
Al2o3 Catalyst

The removal efficiency of toluene and CO2 selectivity were improved and the production of O3 and NOx was reduced by using DBD combined with different catalysts.

Dielectric barrier discharge coupled with Fe2+, Mn2+ and Cu2+ scrubbing for toluene removal

Chemosphere ◽  
2021 ◽  
pp. 133306
Author(s):  
Caihong Qin ◽  
Chaochao Jiang ◽  
Mengke Guo ◽  
Rongrong Liu ◽  
Rui Yu ◽  
...  
Keyword(s):  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Dielectric Barrier ◽  
Toluene Removal

Synthesis gas production via dielectric barrier discharge over Ni/γ-Al2O3 catalyst

2004 ◽  
Vol 89 (1-2) ◽  
pp. 27-33 ◽  
Author(s):  
Hyung Keun Song ◽  
Jae-Wook Choi ◽  
Sung Hoon Yue ◽  
Hwaung Lee ◽  
Byung-Ki Na
Keyword(s):  
Dielectric Barrier Discharge ◽  
Synthesis Gas ◽  
Barrier Discharge ◽  
Gas Production ◽  
Dielectric Barrier ◽  
Al2o3 Catalyst

The Characteristics of NO Reduction in the Reactor With Dielectric Barrier Discharge

2009 ◽  
Author(s):  
Bao-Ming Sun ◽  
Shui-E Yin
Keyword(s):  
Dielectric Barrier Discharge ◽  
Oxygen Content ◽  
Removal Efficiency ◽  
Barrier Discharge ◽  
Nitrogen Atmosphere ◽  
Discharge Power ◽  
Gas Velocity ◽  
Dielectric Barrier ◽  
No Removal ◽  
Removal Efficiencies

The conventional techniques, which are being used to clean the flue gases such as catalytic reduction method for NO removal, wet and dry scrubbers for SO2 removal and ESP for particulate removal, are becoming more expensive and less suitable for small plants and mobile emission sources. Non-thermal plasma (NTP) techniques utilizing electrical discharges give an innovative approach for economical solution of gas cleaning. The studies present recent work on applying the electrical discharge plasma technology for treating gaseous pollutants, in general, and nitric oxide, in particular, as this is one of the major contributors to air pollution. The present works focuses attention on dielectric barrier discharge technique for nitric oxide removal from simulated gas compositions and investigate the effect of various operating parameters on the NO removal efficiencies at room temperature. The effects of various parameters, viz. discharge power, gas velocity, initial NO concentration (ppm), gas mixture composition, etc., on NO removal efficiency are discussed. Studies are divided into two parts: in the nitrogen atmosphere and argon atmosphere respectively, in order to investigate the effect of various operating parameters on the NO removal efficiencies at room temperature. The results in nitrogen atmosphere indicate that the influence of the discharge power, oxygen content and different initial concentration on NO removal efficiency are also studied. Conclusion that increasing discharge power is in favor of the NO removal. Adding oxygen reduce the NO removal efficiency significantly, and changing the NO initial concentration effected on NO removal efficiency but nor as good as the factors of discharge power, oxygen content. In the argon atmosphere, the dielectric barrier discharge require lower voltage level. The effect of the discharge power, gas velocity and oxygen content on NO removal efficiencies are studied and some conclusions be obtained, increasing discharge power and lowing flue gas velocity would conducive to removal, adding oxygen would hinder the removal of NO. Further result and comparative study of various cases be presented in this paper.

scholarly journals Studies on the Electrical Behaviour and Removal of Toluene with a Dielectric Barrier Discharge

2014 ◽  
Vol 13 (1) ◽  
Author(s):  
Michael Schmidt ◽  
Milko Schiorlin ◽  
Ronny Brandenburg
Keyword(s):  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Plasma Reactor ◽  
Power Input ◽  
Operating Voltage ◽  
Electrical Behaviour ◽  
Total Removal ◽  
Dielectric Barrier ◽  
Toluene Removal ◽  
Dry Conditions

AbstractThis contribution attempts to establish an easy-to-apply non-thermal plasma reactor for efficient toluene removal. Derived from the already established knowledge of the so called Dielectric Barrier Discharge (DBD) Stack Reactor a new model reactor was used in this work. The DBD Stack Reactor is a multi-elements reactor but in this work only one stack element was used to investigate the efficiency and efficacy of toluene removal. In case of reliable results the scalability process for industrial application is already well known. Therefore, laboratory experiments were conducted in dry and wet synthetic air with an admixture of 50 ppm toluene. Along with the toluene removal process the electrical behaviour of the discharge configuration was investigated. It was found that the electrical capacitance of the dielectric barrier changes with variations of the operating voltage. This could be due to the changes in the area of the dielectric barrier which is covered with plasma. Additionally, it was found that the power input into the plasma, at a fixed operating voltage, is proportional to the frequency, which is in agreement with the literature.Regarding the decomposition process, the total removal of toluene was achieved at specific input energy densities of 55 J L-1 under dry conditions and 110 J L-1 under wet conditions. The toluene removal was accompanied by the production of nitric acid (dry conditions) and formic acid (wet conditions). The latter suggested a combination of the plasma reactor with a water scrubber as an approach for total removal of pollutant molecules.

scholarly journals In Plasma Catalytic Oxidation of Toluene Using Monolith CuO Foam as a Catalyst in a Wedged High Voltage Electrode Dielectric Barrier Discharge Reactor: Influence of Reaction Parameters and Byproduct Control

2019 ◽  
Vol 16 (5) ◽  
pp. 711 ◽  
Author(s):  
Juexiu Li ◽  
Hongbo Zhang ◽  
Diwen Ying ◽  
Yalin Wang ◽  
Tonghua Sun ◽  
...  
Keyword(s):  
Dielectric Barrier Discharge ◽  
Removal Efficiency ◽  
High Voltage ◽  
Barrier Discharge ◽  
Degradation Mechanism ◽  
Anthropogenic Sources ◽  
Substantial Contribution ◽  
High Voltage Electrode ◽  
Dielectric Barrier ◽  
Dbd Reactor

Volatile organic compounds (VOCs) emission from anthropogenic sources has becoming increasingly serious in recent decades owing to the substantial contribution to haze formation and adverse health impact. To tackle this issue, various physical and chemical techniques are applied to eliminate VOC emissions so as to reduce atmospheric pollution. Among these methods, non-thermal plasma (NTP) is receiving increasing attention for the higher removal efficiency, non-selectivity, and moderate operation, whereas the unwanted producing of NO2 and O3 remains important drawback. In this study, a dielectric barrier discharge (DBD) reactor with wedged high voltage electrode coupled CuO foam in an in plasma catalytic (IPC) system was developed to remove toluene as the target VOC. The monolith CuO foam exhibits advantages of easy installation and controllable of IPC length. The influencing factors of IPC reaction were studied. Results showed stronger and more stable plasma discharge in the presence of CuO foam in DBD reactor. Enhanced performance was observed in IPC reaction for both of toluene conversion rate and CO2 selectivity compared to the sole NTP process at the same input energy. The longer the contributed IPC length, the higher the toluene removal efficiency. The toluene degradation mechanism under IPC condition was speculated. The producing of NO2 and O3 under IPC process were effectively removed using Na2SO3 bubble absorption.

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