NOx Removal Using a Non-thermal Surface Plasma Discharge Powered by a Modulated Voltage

J. Jolibois1, K. Takashima1, G. Touchard1, 2, and A. Mizuno1

1Department of Environmental and Life Sciences, Toyohashi University of Technology, Japan
2Pprime Institute, CNRS, University of Poitiers-ENSMA, France

Abstract— This paper deals with the NOx removal with the help of a non-thermal surface plasma discharge powered by a modulated high voltage waveform. The underlying idea is the use of an unsteady actuation in order to reduce the electrical power consumption of the cleaning device. To achieve this, the effect of amplitude and burst modulation on NOx remediation is analyzed. These experiments show an important decrease of the electric power in both cases. In addition, NOx removal is enhanced with the burst modulation (BM) with a duty cycle ranging between 0.3-0.6. So the energy efficiency is 2.5 time higher than the standard case and reaches 4.5 g/kWh. In the case of amplitude modulation (AM), the modulated voltage has no effect on the gas exhaust treatment.

Keywords— Non-thermal plasma, surface discharge, gas treatment, pollution control, NOx removal



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