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Article

Oxidation of Airborne m-Xylene in Pulsed Corona Discharge: Impact of Water Sprinkling

by
Kristen Altof
*,
Marina Krichevskaya
,
Sergei Preis
and
Juri Bolobajev
*
Laboratory of Environmental Technology, Department of Materials and Environmental Technology, Tallinn University of Technology, 5 Ehitajate Tee, 19086 Tallinn, Estonia
*
Authors to whom correspondence should be addressed.
ChemEngineering 2024, 8(5), 99; https://doi.org/10.3390/chemengineering8050099
Submission received: 6 August 2024 / Revised: 17 September 2024 / Accepted: 24 September 2024 / Published: 1 October 2024

Abstract

Plasma from electric discharges can be used in the abatement of volatile organic compounds (VOCs). The application of gas-phase pulsed corona discharge (PCD) in air–water mixtures provides favorable conditions for the oxidation of VOCs at unsurpassed energy efficiency. This research investigates the impact of water sprinkling on PCD performance in the oxidation of m-xylene as a model compound. Experimental research into the plasma treatment of continuous air flow was undertaken using the PCD reactor in dry and water-sprinkled modes. Water sprinkling more than doubled the m-xylene oxidation rate, which can be attributed to abundant OH-radicals produced at the plasma–water interface. Water sprinkling substantially reduced the formation of nitrous oxide, which is considered to be a secondary pollutant in the outlet air. Ozone is considered a by-product helping the subsequent photocatalytic oxidation of potential residues and photocatalyst maintenance. The use of water-sprinkled PCD is a promising approach to energy-efficient abatement of VOCs.
Keywords: AOP; plug flow plasma reactor; water sprinkled plasma; air purification; nitrous oxide; non-thermal plasma; ozone; VOCs; ROS AOP; plug flow plasma reactor; water sprinkled plasma; air purification; nitrous oxide; non-thermal plasma; ozone; VOCs; ROS
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MDPI and ACS Style

Altof, K.; Krichevskaya, M.; Preis, S.; Bolobajev, J. Oxidation of Airborne m-Xylene in Pulsed Corona Discharge: Impact of Water Sprinkling. ChemEngineering 2024, 8, 99. https://doi.org/10.3390/chemengineering8050099

AMA Style

Altof K, Krichevskaya M, Preis S, Bolobajev J. Oxidation of Airborne m-Xylene in Pulsed Corona Discharge: Impact of Water Sprinkling. ChemEngineering. 2024; 8(5):99. https://doi.org/10.3390/chemengineering8050099

Chicago/Turabian Style

Altof, Kristen, Marina Krichevskaya, Sergei Preis, and Juri Bolobajev. 2024. "Oxidation of Airborne m-Xylene in Pulsed Corona Discharge: Impact of Water Sprinkling" ChemEngineering 8, no. 5: 99. https://doi.org/10.3390/chemengineering8050099

APA Style

Altof, K., Krichevskaya, M., Preis, S., & Bolobajev, J. (2024). Oxidation of Airborne m-Xylene in Pulsed Corona Discharge: Impact of Water Sprinkling. ChemEngineering, 8(5), 99. https://doi.org/10.3390/chemengineering8050099

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