Degradation characteristics of carbon disulfide in the dielectric barrier discharge reactor

作者：Li, Yun Xia; Zhu, Cheng Zhu; Chen, Tian Hu^*; Song, Lei; Li, Dong Ni

来源：环境科学研究, 2013, 26(2): 188-193.

• Applied voltages
• Degradation characteristics
• Dielectric barrier discharge reactors
• Dielectric barrier discharges
• Dielectric layer
• High relative humidities
• Removal rate
• Stainless steel wires

In order to reveal the degradation characteristics of CS2 in dielectric barrier discharge (DBD) reactors and improve its removal rate, coaxial cylinder-tube DBD reactors were designed to study the effect of several factors on removal rate of CS2 in DBD plasma. The factors include the number of dielectric layer, applied voltage, material and diameter of center electrode, type and relative humidity of background atmosphere. The experimental results showed that the removal rate of CS2 in the singer-dielectric-layer reactor was higher than that in the double-dielectric-layer reactor when the applied voltage was low (4.0-6.5 kV). However, there was a higher removal rate of CS2 in the double-dielectric-layer reactor, when the applied voltage was higher (6.5-9.0 kV). Higher applied voltage was helpful for the removal of CS2. As a center electrode of the reactor, brass wire was superior to the stainless steel wire. The removal rate of CS2can be improved from 63% to 75% by increasing the diameter of the center electrode, while the average energy consumption increased from 510 kJ/mg to 611 kJ/mg. Under the same conditions, the average removal rate of CS2was the greatest in oxygen (74%), the second in the air (59%) and the smallest in nitrogen (48%). Appropriate relative humidity (26%) in the background atmosphere contributed to the improvement of the removal rate of CS2, however, the high relative humidity (more than 50%) reduced the removal rate of CS2.

• 出版日期2013
• 单位合肥工业大学