A series of experiments was performed for toluene removal from a gaseous influent at the normal temperature and atmospheric pressure by decomposition due to dielectric barrier discharge generated non-thermal plasma, by using MnO2/gamma-Al2O3 as catalyst. The removal efficiency of toluene was significantly increased by combining MnO2/gamma-Al2O3 With NTP. At the same time, the goal of improving energy efficiency and decreasing O-3 from exhaust as treatment was accomplished (c) 2008 Elsevier B.V. All rights reserved.