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Nanosecond pulse discharge based nitrogen oxides treatment using different electrode configurations

Mohapatro, Sankarsan and Allamsetty, Srikanth and Madhukar, Apeksha and Sharma, Nikhil Kumar (2017) Nanosecond pulse discharge based nitrogen oxides treatment using different electrode configurations. In: High Voltage, 2 (2). pp. 60-68. ISSN 2397-7264

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Official URL: https://doi.org/10.1049/hve.2017.0011


Nowadays, the intensity of air pollution, due to the industries and automobiles, has been increasing continuously. Nitrogen oxides (NOX) are one of the most harmful pollutants, which are getting released from both automobile and stationary diesel engines. They essentially need to be removed from the exhaust using after treatment systems. However, the energy required to remove these pollutants is one of the major considerations in selecting the technology for pollutant removal from diesel engine exhaust. A study has been carried out on the non-thermal plasma-based NOX removal technique using various combinations of power supply units and electrode configurations. Three different electrode configurations are tested, in which two are cylindrical electrodes with diameters 3 and 5 mm, and the other one is a square electrode with a diagonal of 5 mm. A comparison is made between the results with two different pulse power supply units, PS-I: high-voltage direct current test set based and PS-II: DC-DC converter based. The square electrode with PS-II has been found to be the optimal combination, which has removed 85% of NOX from the exhaust at an energy density of 55.5 J/L, when the initial NOX concentration in the exhaust is 388 ppm.

Item Type: Journal Article
Publication: High Voltage
Publisher: Institution of Engineering and Technology
Additional Information: The Copyright of this article belongs to the authors
Keywords: Automobile engines; DC-DC converters; Diesel engines; Electrodes; Exhaust systems (engine); HVDC power transmission; Nitrogen oxides; Pollution; Cylindrical electrodes; Electrode configurations; High voltage direct current; Optimal combination; Pollutant removal; Power supply unit; Pulse power supply; Stationary diesel engines; Electric discharges
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 01 Jun 2022 05:46
Last Modified: 01 Jun 2022 05:46
URI: https://eprints.iisc.ac.in/id/eprint/72990

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