Influence of Relative Humidity on Non-thermal Surface Discharge Plasma Processing of gas-phase Toluene
The performance of gas-phase toluene decomposition was studied by using a surface discharge plasma reactor with or without photo-catalyst under different relative humidity: 0％, 25％ and 50％ at room temperature and atmospheric pressure.The main purpose of this work is to investigate the effect of relative humidity on the discharge character and toluene oxidation. It was found that the electrical charge and energy density decreased when the percentage of water in air increased. The performance of the plasma became better in humidified air compared with that in the dry air (RH=0％).It was observed that toluene removal rate, the selectivity to CO2 and COx in the decomposition products and energy efficiency increased with the relative humidity increasing. However, it was noticed that humidity had some adverse influence on photo-catalysts activity. It was found that compared with the plasma alone system, plasma-photocatalysis system had higher removal efficiency and CO2 selectivity in moderate and low relative humidity (RH=25％,RH=0％).But with continuing increase of relative humidity(RH=50％), the catalyst activity was suppressed and energy efficiency decreased in the plasma-photocatalysis system.
Toluene ozidation Surface discharges Relative Humidity (RH) Energy efficiency
Jianfang Zhang Zhipeng Bai Wenxia Zhao Bin Lu Min Ji
College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China School of Environmental Science & Engineering, Tianjin University, Tianjin 300072, China
国际会议
上海
英文
3753-3757
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）