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Achieving Better $NO_x$ Removal in Discharge Plasma Reactor by Field Enhancement

Rajanikanth, BS and Sinha, Dipanwita (2008) Achieving Better $NO_x$ Removal in Discharge Plasma Reactor by Field Enhancement. In: Plasma Science and Technology, 10 (2). pp. 198-202.

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Abstract

Application of plasma chemistry for gas cleaning is gaining prominence in recent years, mainly from an energy efficiency point of view. In this paper we conducted a comparative study of $NO/NO_x$ removal using two different types of dielectric barrier discharge electrodes, wire-cylinder reactor, pipe-cylinder reactor. Investigations were first carried out with synthetic gases to obtain the baseline information on the $NO/NO_x$ removal with respect to the two geometries studied. Further, experiments were carried out with raw diesel exhaust under loaded condition. A high $NO_x$ removal efficiency of 90% was observed for the pipe-cylinder reactor as compared to that of 53.4% for the wire-cylinder reactor. Furthermore, for the same energy consumed per NO molecule (about 73 eV/NO molecule), the removal efficiency increased from 67% for the wire-cylinder to about 98% for the pipe-cylinder which was quite appreciable.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Institute of Physics.
Keywords: NOx removal,engine exhaust,plasma treatment,barrier discharge electrodes
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 08 May 2008
Last Modified: 19 Sep 2010 04:44
URI: http://eprints.iisc.ernet.in/id/eprint/13866

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