Red Mud Packed Surface Discharge Reactor for Nox/THC Removal: Exploring Plasma Catalysis of Diesel Exhaust

Nishanth, K and Rajanikanth, BS (2021) Red Mud Packed Surface Discharge Reactor for Nox/THC Removal: Exploring Plasma Catalysis of Diesel Exhaust. In: Plasma Chemistry and Plasma Processing, 41 (5). pp. 1293-1311.

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Abstract

For the past three decades, electrical discharge-based non-thermal plasma treatment, with or without additional treatment techniques, is being used at the laboratory level for the abatement of various pollutant gases present in diesel exhaust. In the current work, a novel red mud packed surface discharge reactor has been proposed for exploring the possibility of treating the oxides of nitrogen (NOX) and total hydrocarbons (THC) present in diesel exhaust using plasma catalysis. The inexpensive nature and abundant availability of industrial wastes like red mud makes them a feasible alternative to commercially available, expensive catalysts and adsorbents used in conventional exhaust treatment methods. In the current plasma catalysis study, a maximum NOX removal of 96 and THC removal of 43 have been observed. NOX removal studies using plasma-only and plasma-red mud cascade configurations were conducted, and the results were compared with those obtained using plasma catalysis to ascertain the increased contribution of plasma-activated red mud towards NOX removal. The possible reaction mechanisms for NOX/THC removal during plasma catalysis have been identified, and the results have been discussed at length for different engine loads emphasizing the role of plasma activation of red mud towards NOX/THC removal. © 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.

Item Type:	Journal Article
Publication:	Plasma Chemistry and Plasma Processing
Publisher:	Springer
Additional Information:	The copyright for this article belongs to Springer
Keywords:	Catalysis; Diesel engines; Exhaust gases; Industrial waste treatment; Industrial wastes; Nitrogen plasma; Plasma applications, Activated red muds; Additional treatment; Cascade configuration; Electrical discharges; Feasible alternatives; Non-thermal plasma treatment; Oxides of nitrogen; Total hydrocarbons, Electric discharges
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	30 Aug 2021 09:19
Last Modified:	30 Aug 2021 09:19
URI:	http://eprints.iisc.ac.in/id/eprint/69549

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