Catalyzing Industrial Wastes Through Discharge Plasma for Diesel Exhaust Cleaning: A Case Study with Cascaded Corona Reactors

Vijay, S and Rajanikanth, BS (2025) Catalyzing Industrial Wastes Through Discharge Plasma for Diesel Exhaust Cleaning: A Case Study with Cascaded Corona Reactors. In: International Journal of Environmental Research, 19 (1).

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Abstract

Over the past three decades, extensive research has been conducted at the laboratory level to explore various discharge plasma techniques for the removal of gaseous pollutants such as nitrogen oxides (NOX) and total hydrocarbons (THC) from diesel exhaust. Very recently, plasma catalysis employing industrial waste-based pellets has gained significant attention as a comprehensive solution for both solid waste management and pollution control. The purpose of this research is to enhance the removal efficiency of NOX and THC through plasma catalysis in the presence of industrial waste-based pellets. The study involves the application of a double energized cascaded corona reactor technique energized by a common pulse source. The industrial wastes utilized for plasma catalysis include lignite ash, red mud, waste tiles, and oyster shells. When considering only plasma treatment of the exhaust, the NOX and THC removal efficiencies achieved with this novel reactor design were 40 and 46 at 242 J/L, respectively. Significantly, utilizing red mud and lignite ash pellets in plasma catalysis resulted in enhanced THC removal efficiency of 70 and 65 respectively, i.e. about 1.4 to 1.5 times that observed with only plasma, at the same specific energy. Similarly, the NOX removal efficiency was 2.25 to 2.4 times that of plasma alone case at 1/6th the specific energy i.e., 97 at 39 J/L. The studies were also conducted with single reactor case and the results were compared. Double energization technique involving two cascaded reactors performed better than single energized ones in terms of energy and NOX/THC removal efficiency. © University of Tehran 2024.

Item Type:	Journal Article
Publication:	International Journal of Environmental Research
Publisher:	Springer Science and Business Media Deutschland GmbH
Additional Information:	The copyright for this article belongs to Springer Science and Business Media Deutschland GmbH.
Keywords:	ash; bioreactor; catalysis; exhaust emission; hydrocarbon; industrial waste; mud; nitrous oxide; shell; waste management
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	12 Dec 2024 16:52
Last Modified:	12 Dec 2024 16:52
URI:	http://eprints.iisc.ac.in/id/eprint/87005

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