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

Authors: 
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.