Abatement of perfluorocompounds with microwave plasma in atmospheric pressure environment

作者：Xie Hongduan; Sun Bing^*; Zhu Xiaomei

来源：Journal of Hazardous Materials, 2009, 168(2-3): 765-769.

DOI：10.1016/j.jhazmat.2009.02.081

• Perfluorocomounds
• Microwave plasma
• Removal efficiency
• Emission spectrum

Perfluorocompounds emitted by the semiconductor industry are global warming gases. These gases need to be removed efficiently because of their strong absorption of infrared radiation and long atmospheric lifetimes which cause the global warming effect. In this study, microwave argon plasma operating at atmospheric pressure was investigated experimentally for various operating conditions including microwave power, total gas flow rate, initial concentration, and additive gas. The mechanisms of perfluorocompounds decomposition were studied by the plasma emission spectrum. Under the optimum condition, the destruction and removal efficiency of CF(4) Could reach up to 98.4%. The emission spectrum analysis indicated that the existence of the O or OH radicals could enhance the CF(4) decomposition by adding suitable volume of O(2) or H(2)O. The mechanisms of CF(4) decomposition are that the electron, O and OH radicals all associated with CF(4) conversion, it has the sequence

• 出版日期2009-9-15
• 单位大连海事大学