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Hybrid Plasma-Catalyst System for the Removal of Trichloroethylene in Air

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Abstract:

Non-thermal plasmas are innovative and promising tools with respect to end-of-pipe treatment of waste gases. Among other features, they allow decomposition of low concentrations of volatile organic compounds in air streams at atmospheric pressure. In this paper, a plasma-catalytic hybrid system for the removal of trichloroethylene (TCE) in dry air is discussed. A pin-to-mesh electrode concept is used to obtain a positive corona discharge. A packed bed of TiO2 photocatalyst partially fills the gap between the pin(s) and the mesh. TCE destruction performances of the system with and without the photocatalyst are compared. It is shown that the presence of the catalyst enhances the TCE decomposition with a maximum removal fraction of 85% at an energy density of 600 J/l for a total air flow rate of 1.5 slm with 100 ppm TCE at the inlet.

Document Type: Research Article

Affiliations: 1: Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering Ghent University, Rozier 44, B-9000 Ghent, Belgium 2: Research Group Environmental Organic Chemistry and Technology ENVOC, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium

Publication date: January 1, 2006

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stn/jaots/2006/00000009/00000001/art00009
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