The Effect of Oxygen and Water Vapor on Nitric Oxide Conversion with a Dielectric Barrier Discharge Reactor

Abstract

The effect of O 2 and H 2 O vapor on the Nitric oxide (NO) removal rate, the NO 2 generation rate and the discharge characteristics were investigated using the dielectric barrier discharge (DBD) reactor at 1 atm pressure and at room temperature (20°). The results showed that the O 2 present in the flue gas always hampered the removal of NO and the generation of N 2 O, but that the O 2 could enhance the generation of NO 2 in the NO/N 2 / O 2 mixtures. Furthermore, with the increase of oxygen, the average discharge current gradually decreases in the reactor. The H 2 O present in N 2 /NO hindered the removal of NO and the generation of NO 2 but had no impact on the average discharge current in the reactor in the NO/N 2 /H 2 O mixtures in which the HNO 2 and HNO 3 was detected. The energy efficiency of the DBD used to remove the NO from the flue gas was also estimated.

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“…The maximum peroxynitrite concentration was observed when the energy density reached its peak. Since the dissociation energy level of the O–O bond (4.81 eV) is far less than that of the N–N bond (9.79 eV), [ 55 ] the generation of an oxygen atom is easier than a nitrogen atom via electron impact with the higher energy per area. Likewise, the relatively high oxygen atom concentration is conductive for mode transition according to Kogelschatz and Eliasson's work.…”

Ozone Treatment Is Insufficient to Inactivate SARS-CoV-2 Surrogate under Field Conditions

“…Nevertheless, the presence of high-water content in the air during ozone generation by dielectric barrier discharge has a serious disadvantage since it results in decomposition of nitrogen and formation of nitrogen radicals. Subsequent chemical reactions may result in the by-production of nitric acid, acting as a caustic and corrosive agent for certain materials [ 44 ].…”

Experimental study on the influence of H 2 O vapor and O 2 for desulfurization and denitrification of the diesel exhaust in marine application by non‐thermal plasma

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