Volatile Organic Compounds (VOCs) Removal by Using Dielectric Barrier Discharge
An experimental study on volatile organic compounds (VOCs) removal with non-thermal plasma generated by dielectric barrier discharge (DBD) in a coaxial cylindrical reactor was carried out at atmospheric pressure and room temperature. During plasma processing to decompose toluene, electrical parameters such as discharge power, equivalent capacitance of the gap (Cg) and the dielectric barrier (Cd), were analyzed using the Q -V Lissajous diagram. In order to optimize the geometry of the DBD reactor, the removal efficiency of toluene was compared for various inner electrode diameters (1.20mm, 1.65mm, 2.0mm) and different reactor materials (ceramic and PMMA). It suggested that, the specific input energy (SIE) depended linearly on the voltage in all cases, and Cg decreased with increasing voltage and gap length. However, with the voltage increasing, Cd increased initially and stabilized at about 700 pF. With respect to toluene conversion, 2.0mm electrode appeared to be superior to 1.20mm and 1.65mm electrodes. In contrast to PMMA reactor, abatement of toluene was enhanced by ceramic reactor possessing high permittivity, especially in the high input energy condition, 73％ for ceramic and 62％ for PMMA at 660J/l. The energy efficiency for toluene removal stabilized at 5 g/kWh approximately with removal ratio exceeding 50％.
dielectric barrier discharge volatile organnic compounds Lissajous diagram discharge parametes toluene removal
Baojuan Dou Jian Li Wenjun Liang Tao Zhu Yili Li Yuquan Jin Lijuan He
College of Environmental and Energy Engineering Beijing University of Technology Beijing, China
国际会议
上海
英文
3945-3948
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）