Decomposition of VOC in Air Using a Streamer Corona Discharge Reactor Combined with Catalyst

Abstract

AbstractIn this study, the improvement in the decomposition of volatile organic compounds (VOCs) was investigated by combining discharge plasma with catalyst. DC streamer corona plasma reactors combined with a catalyst were developed. The basic configuration of the reactors is a multineedle-to-plane mesh electrode system. By changing the position of catalyst against the plasma region, several reactors were developed and compared with each other. As a catalyst, a honeycomb catalyst (Mn type) was tested. A catalyst layer was located between the needles and plane mesh electrodes (type A reactor), or the catalyst layer was placed just behind the mesh electrode (type B reactor). In other reactors, the catalyst layer was followed by the needles-to- plane mesh electrode system (type C reactor) or the catalyst layer was removed (type D reactor). The needles- to-plane mesh electrode system produced the stable streamer corona discharge. The streamers covered the surface of the catalyst layer in the type A and type B reactors. However, the characteristics of the streamer were different for the type A and type B reactors. Toluene (C