Fig 1.
Purple color represents the generated non-thermal plasma in the DBD reactor.
Fig 2.
Grid dependency analysis of velocity magnitude.
a) x = 10 cm b) x = 30 cm.
Table 1.
Grid dependency analysis of RTD.
Fig 3.
Image of the screw thread electrodes.
Fig 4.
Schematic of the computational domain for studying the effect of threads on RTD.
Fig 5.
RTD at x = 10 cm and x = 30 cm inside the reactor for the screw thread electrode with 1 mm gap between the threads.
Table 2.
Calculated residence time for various studied electrodes.
Fig 6.
The velocity vector field of flow inside the reactors with different threads.
a) Screw thread electrode with 1 mm thread length, b) Screw thread electrode with 2 mm thread length, c) Screw thread electrode with 3 mm thread length, d) The rod electrode without any threads.
Fig 7.
Velocity vectors of the flow at the middle of the thread for the reactor with the screw thread electrode with 1 mm gap between the threads.
Fig 8.
Effect of electrode configuration on NOx removal efficiency.
a) at 9.9 kVPP and different pulse frequencies b) at 19.2 kHz pulse frequency and different applied voltage.
Fig 9.
The variation of NOx removal efficiency as a function of SED for various studied electrodes at 9.9 kVPP.
Fig 10.
The variation of NOx removal efficiency as a function of NOxE for different electrode configurations.
Fig 11.
An image of the produced plasma for the reactor with screw electrode with 1 mm gap between the threads.