(234y) Effect of MnO2 Catalyst on Nonthermal Plasma Reactor Combined with Ceramic Filter for Trichloroethylene Decomposition

Yasuda, Y., Soka University
Ida, J., Soka University
Matsuyama, T., Soka University
Ochi, M., Soka University
This paper attempts to improve the energy efficiency and to reduce by-products generation of the authorsâ?? nonthermal plasma reactor for VOC treatment by combining with MnO2 catalyst. In the experiments, trichloroethylene is used as a model VOC and two location of setting the MnO2 catalyst as â??inside the reactorâ? and â??downstream of the reactorâ? was tried. The results demonstrated that energy efficiency to decompose TCE was improved by combining with the MnO2 catalyst for both location conditions of â??insideâ? and â??downstreamâ? of the reactor. As to by-product reduction, although without catalyst case, small amount of phosgene, dichloroacetylchloride (DCAC), pentachloroethane (PCE), tetrachloroethane (TCE) generation was observed, tetrachloroethane generation was under the detection limit and other by-products generation was also reduced with the MnO2 catalyst for â??downstreamâ? case. Moreover, when the catalyst was placed â??insideâ? the reactor, phosgene and DCAC was also under the detection limit. These results indicated the significant effect of MnO2 catalyst to our nonthermal reactor for VOC treatment.