aKey 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
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.
Received: 28 March 2008
Revised: 29 June 2008
Accepted manuscript online:
Fund: Project supported by the Science
and Technology Programme of Beijing Municipal Science and Technology
Commission, China (Granted No Y0604002040731).
Cite this article:
Chen Guang-Liang (陈光良), Chen Shi-Hua (陈仕华), Chen Wen-Xing (陈文兴), Yang Si-Ze(杨思泽) A cold plasma plume with a highly conductive liquid electrode 2008 Chin. Phys. B 17 4568
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