中国物理B ›› 2008, Vol. 17 ›› Issue (12): 4568-4573.doi: 10.1088/1674-1056/17/12/039

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A cold plasma plume with a highly conductive liquid electrode

杨思泽1, 陈仕华2, 陈文兴3, 陈光良4   

  1. (1)Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; (2)Department of Civil and Environmental Engineering, Syracuse University, Syracuse, NY 13210, USA; (3)Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China; (4)Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China;Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sci
  • 收稿日期:2008-03-28 修回日期:2008-06-29 出版日期:2008-12-20 发布日期:2008-12-20
  • 基金资助:
    Project supported by the Science and Technology Programme of Beijing Municipal Science and Technology Commission, China (Granted No Y0604002040731).

A cold plasma plume with a highly conductive liquid electrode

Chen Guang-Liang (陈光良)ac, Chen Shi-Hua (陈仕华)b, Chen Wen-Xing (陈文兴)a,  Yang Si-Ze(杨思泽)c   

  1. a Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China; b Department of Civil and Environmental Engineering, Syracuse University, Syracuse, NY 13210, USA; c Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2008-03-28 Revised:2008-06-29 Online:2008-12-20 Published:2008-12-20
  • Supported by:
    Project supported by the Science and Technology Programme of Beijing Municipal Science and Technology Commission, China (Granted No Y0604002040731).

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摘要： A cold dielectric barrier discharge (DBD) plasma plume with one highly conductive liquid electrode has been developed to treat thermally sensitive materials, and its preliminary discharging characteristics have been studied. The averaged electron temperature and density is estimated to be 0.6eV and 1011/cm3, respectively. The length of plasma plume can reach 5cm with helium gas (He), and the conductivity of the outer electrode affects the plume length obviously. This plasma plume could be touched by bare hand without causing any burning or painful sensation, which may provide potential application for safe aseptic skin care. Moreover, the oxidative particles (e.g., OH, O*, O3) in the downstream oxygen (O2) gas of the plume have been applied to treat the landfill leachate. The results show that the activated O2 gas can degrade the landfill leachate effectively, and the chemical oxygen demand (COD), conductivity, biochemical oxygen demand (BOD), and suspended solid (SS) can be decreased by 52%，57%，76% and 92%, respectively.

关键词: plasma plume, liquid electrode, degradation, landfill leachate

Abstract: A cold dielectric barrier discharge (DBD) plasma plume with one highly conductive liquid electrode has been developed to treat thermally sensitive materials, and its preliminary discharging characteristics have been studied. The averaged electron temperature and density is estimated to be 0.6eV and 1011/cm3, respectively. The length of plasma plume can reach 5cm with helium gas (He), and the conductivity of the outer electrode affects the plume length obviously. This plasma plume could be touched by bare hand without causing any burning or painful sensation, which may provide potential application for safe aseptic skin care. Moreover, the oxidative particles (e.g., OH, O*, O3) in the downstream oxygen (O2) gas of the plume have been applied to treat the landfill leachate. The results show that the activated O2 gas can degrade the landfill leachate effectively, and the chemical oxygen demand (COD), conductivity, biochemical oxygen demand (BOD), and suspended solid (SS) can be decreased by 52%，57%，76% and 92%, respectively.

Key words: plasma plume, liquid electrode, degradation, landfill leachate

中图分类号:  (Glow; corona)

  • 52.80.Hc
52.25.-b (Plasma properties) 52.50.Dg (Plasma sources) 52.80.Wq (Discharge in liquids and solids)