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Investigation of water treatment using dielectric barrier discharge

Wang, Tao and Zhao, Yiyi and MacLean, Michelle and MacGregor, Scott and Huang, Guangming and Wilson, Mark (2012) Investigation of water treatment using dielectric barrier discharge. In: Proceedings of the XIX International Conference on Gas Discharges and Their Applications. High Voltage Engineering, Beijing, pp. 654-657.

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Abstract

The gas discharge was investigated for its degradation of methylene blue in aqueous solutions as an alternative to the advanced oxidation process. This, together with the microbial inactivation of Escherichia coli (E. coli) bacteria, was used to identify the potential reactive species produced. A tailor-made barrier discharge water reactor was made which incorporated micro-discharges and the gas diffusion technology to enable direct interaction between gas discharge and aqueous solutions. The barrier discharge properties and corresponding ozone production prior to and after exposure to aqueous solutions were investigated. Experimental results indicate that besides ozone, other reactive species were produced and played an important role in methylene blue degradation and E. coli inactivation. Their contribution to the methylene blue degradation increases with solution concentration and could reach more than 50% for a sample concentration of 600 mg/l. Corresponding energy efficiency as high as 0.33 µmol/J was achieved using oxygen as the source gas.

Item type: Book Section
ID code: 41620
Keywords: dielectric barrier discharge , water treatment , gas discharges, Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 22 Oct 2012 11:00
    Last modified: 06 Sep 2014 08:51
    URI: http://strathprints.strath.ac.uk/id/eprint/41620

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