  It is well known that the non-thermal plasma processes using electrical
discharge or electron beam are effective for the environmental pollutant
removal. Especially, the electron beam can efficiently remove pollutant,
because a lot of radicals which are useful to remove pollutant can be easily
produced by high-energy electrons. We have developed a compact 100kV secondary
emission electron gun to apply NOX removal. The device offers several inherent
advantages such as compact in size, wide and uniform electron beam. Besides,
the device offers good capability in high repetition rate pulsed operation with
easy control compared with glow discharge or field emission control cathode
guns. In present study, the NOX removal characteristics have been studied under
the increased gun voltage, varied pulsed electron beam parameters such as
current density and pulse width as well as gas flow rate. The experimental
results indicate a better NOX removal efficiency comparing to other high-energy
electron beam and electrical discharge processing.
