Development of an electron-beam treatment system of a practical scale VOC gas stream

Hakoda, Teruyuki; Shimada, Akihiko; Kimura, Atsushi; Taguchi, Mitsumasa; Araki, Koshi*; Hirota, Koichi

An electron-beam treatment system was developed for the purification of VOC gas stream under a practical gas flow condition. This system consists of a compact-sized electron accelerator and a MnO catalyst bed. The decomposition and mineralization of toluene and/or xylene were examined with and without a catalytic treatment for gas stream at a flow rate of 500 m/h. The EB/catalyst system accelerated the decomposition and the mineralization. For example, the mineralization ratio increased from 42% by EB irradiation to 100% by the combination treatment at 9.3 kGy. Furthermore, the yield of CO relative to CO increased from 59% to 85% by this catalytic treatment.