(583et) Effect of Electrode Configuration On VOCs Decomposition in Non-Thermal Plasma Reactor

Akai, T., Soka University
Watanabe, S., Soka University
Ida, J., Soka University
Matsuyama, T., Soka University
Yamamoto, H., Soka University

In this study, to improve the energy efficiency of the non-thermal plasma reactor which was developed in our laboratory for gas treatment, the effect of electrode configuration on the energy efficiency of VOCs decomposition was examined. The reactor consists of the tubular ceramic filter, a rod electrode which is inserted into the ceramic filter and a coil electrode which is wound at equal intervals on the surface of the ceramic filter. In the experiment, as a part of the electrode configuration, the diameter of the rod electrode and the pitch of the coil electrode were changed and the effect on VOCs decomposition was examined. As one of the model pollutant VOCs, trichroloethylene (TCE) was used in this study. TCE diluted by air was supplied to the reactor (1000 ppm, 1000 mL/min). By applying high-voltage sine wave (14-32 kVpp, 3.0 kHz), the surface discharge was generated. The TCE concentration was measured by GC-FID (Shimadzu: GC-14A). The net power consumption of the discharge (discharge power) was determined from voltage/charge Lissajous figure. The results showed that TCE decomposition ratio was affected by these electrode configurations.