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OH Radicals as Oxidizing Agent for the Abatement of Organic Pollutants in Gas Flows by Dielectric Barrier Discharges

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Plasmas and Polymers

Abstract

OH radicals play an essential role in various plasma-chemical processes aimed at the abatement of organic and inorganic pollutants from off-air flows. We report about the oxidation of carbon monoxide in nonthermal air and nitrogen plasmas in dependence on CO inlet concentration and flow humidity. Thereby the reaction CO + OH → CO2 + H served as a diagnostic tool for OH radical determination in the dielectric barrier discharge at atmospheric pressure. The results were numerically fitted to the equations of a kinetic model allowing the determination of the average OH production efficiency (GOH-value) and OH lifetime (TOH) in dependence on flow humidity. Finally,results on ethyl acetate abatement obtained under similar experimental conditions were modeled by OH radical decomposition.

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Authors and Affiliations

  1. Institut für Umwelttechnologien, Volmerstrasse 9B, D–, 12489, Berlin, Germany

    R. Rudolph & H. Miessner

  2. Dräger Safety, Volmerstrasse 7B, D–, 12489, Berlin, Germany

    K.-P. Francke

Authors
  1. R. Rudolph
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  2. K.-P. Francke
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  3. H. Miessner
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Correspondence to R. Rudolph.

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Rudolph, R., Francke, KP. & Miessner, H. OH Radicals as Oxidizing Agent for the Abatement of Organic Pollutants in Gas Flows by Dielectric Barrier Discharges. Plasmas and Polymers 8, 153–161 (2003). https://doi.org/10.1023/A:1023954629461

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