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Discharge Plasma Treatment for ${NO}_x$ Reduction from Diesel Engine Exhaust: A Laboratory Investigation

Rajanikanth, BS and Srinivasan, AD and Ravi, V (2005) Discharge Plasma Treatment for ${NO}_x$ Reduction from Diesel Engine Exhaust: A Laboratory Investigation. In: IEEE Transactions on Dielectrics and Electrical Insulation, 12 (1). pp. 72-80.


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A detailed study on the removal of oxides of nitrogen $({NO}_x)$ with and without the presence of carbonaceous soot in a stationary diesel engine exhaust was carried out using pulsed electrical discharges/catalyst/adsorbent processes. The processes were separately studied first and then the cascaded processes namely plasma-catalyst and plasma-adsorbent were examined. To investigate the effect of carbonaceous soot on the plasma treatment process, the filtered and unfiltered exhaust was treated by plasma separately. In the cascaded plasma-catalyst process, the plasma treating filtered exhaust was cascaded with a reduction catalyst $V_2O_3$/$TiO_2$ using ammonia as reducing agent and in the cascaded plasma-adsorbent process, the plasma treating unfiltered (raw) exhaust was cascaded with adsorbents (MS-13X/Activated alumina/Activated charcoal). The enhanced $({NO}_x)$ removal efficiency of plasma process in the presence of soot is identified, possible pathways are summarized and the results of the cascaded processes are discussed in detail.

Item Type: Journal Article
Publication: IEEE Transactions on Dielectrics and Electrical Insulation
Publisher: IEEE
Additional Information: �©2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: pulsed discharges;NOx removal;discharge plasma;non-thermal plasma;engine emission;raw exhaust;plasma-catalyst;plasma-adsorbent;particulate treatment;stationary emission source
Department/Centre: Division of Electrical Sciences > High Voltage Engineering (merged with EE)
Date Deposited: 03 Aug 2005
Last Modified: 19 Sep 2010 04:19
URI: http://eprints.iisc.ac.in/id/eprint/3447

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