Abstract
Advanced oxidative and reductive reactions based on non-thermal plasma have been used to reduce NOx gases emitted from 4kW free load diesel engine exhaust. Coaxial dielectric barrier discharge reactor derived by 50 Hz sinusoidal power supply (0-12kV) has been used. Different parameters including, discharge power, discharge length and applied voltage have been investigated experimentally. The discharge cell has been optimized to provide a maximum NOx removal percentage of about 73 % and a maximum removal efficiency of about 32 gm/kWh have been obtained.