Pulsed corona and dielectric-barrier discharge processing of NO in N2

Abstract

Experimental results on pulsed corona and dielectric-barrier discharge processing of very dilute concentrations of NO in N2 are presented. These NO reduction experiments measure the G value for electron-impact dissociation of N2 and are used to infer the effective electron mean energy in an N2 discharge plasma at atmospheric pressure. The data have been obtained from three different laboratories using widely differing electrode structures, voltage wave forms, power measurements, and chemical analyses. The NO reduction yields from the discharge reactors tested are all similar, corresponding to an electron mean energy of 4.0±0.5 eV.

Removal of NO by simultaneous action of dielectric-barrier discharge and TiO2photocatalyst

“…2a) and not separately on the parameters counted above. Thus, similarly to earlier studies [2], SIE is a relevant parameter controlling the NO removal. As expected, at the same SIE, the concentration of untreated NO was higher for higher initial concentrations of NO.…”

“…Non-thermal plasma sources, such as corona discharge or dielectric barrier discharge (DBD) are considered as an efficient method for the treatment of NO x [1][2][3][4][5][6]. Another possibility for the treatment of NO x is to use photocatalysts, such as TiO 2 [6][7][8].…”

Sulfur Tolerance of Selective Partial Oxidation of NO to NO2 in a Plasma

“…All electrical discharge plasma reactors accomplish essentially the same gas-phase plasma chemistry under the same gas conditions [17][18][19][20].…”

“…Details of the plasma chemistry model used here are discussed by Penetrante et al [16][17][18][19][20][21]. Electron-impact processes in the plasma produces ions and radicals.…”

Industrial Applications of Pulsed Power Technology

“…Nonthermal plasmas have many kinds of chemically activate radicals, such as O, O 3 , N, N * , N 2 + and OH, which are generated by the dissociation and ionization of the ambient gases caused by the impact of energetic electrons. Using pulsed power technology, nonthermal plasmas have been generated by a pulsed electron beam [29] or a pulsed streamer discharge [30], and have been used to treat nitric oxides (NO X ) [31][32][33][34], sulfur dioxide (SO 2 ) [35][36][37], carbon dioxide (CO 2 ) [38] and volatile organic compounds (VOCs) [39,40], and to generate ozone [41][42][43][44][45][46]. Particularly, the treatment of exhaust gases (NO X and SO 2 ) using a pulsed streamer discharge has been studied for the past decade.…”