title: Removal dynamics of nitric oxide (NO) pollutant gas by pulse-discharged plasma technique.
abstract: Nonthermal plasma technique has drawn extensive attentions for removal of air pollutants such as NO x and SO2. The NO removal mechanism in pulse discharged plasma is discussed in this paper. Emission spectra diagnosis indicates that the higher the discharge voltage is, the more the NO are removed and transformed into O, N, N2, NO2, and so forth. Plasma electron temperature T(e) is ranged from 6400 K at 2.4 kV discharge voltage to 9500 K at 4.8 kV. After establishing a zero-dimensional chemical reaction kinetic model, the major reaction paths are clarified as the electron collision dissociation of NO into N and O during discharge and followed by single substitution of N on NO to form N2 during and after discharge, compared with the small fraction of NO2 formed by oxidizing NO. The reaction directions can be adjusted by N2 additive, and the optimal N2/NO mixing ratio is 2 : 1. Such a ratio not only compensates the disadvantage of electron competitive consumption by the mixed N2, but also heightens the total NO removal extent through accelerating the NO oxidization process.
authors.affiliation: College of Physics Science and Technology, Hebei University, Baoding, Hebei Province 071002, China.
authors.forename: Lianshui
authors.initials: L
authors.lastname: Zhang
authors.affiliation: College of Physics Science and Technology, Hebei University, Baoding, Hebei Province 071002, China.
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Wang
authors.affiliation: College of Physics Science and Technology, Hebei University, Baoding, Hebei Province 071002, China.
authors.forename: Weidong
authors.initials: W
authors.lastname: Lai
authors.affiliation: College of Physics Science and Technology, Hebei University, Baoding, Hebei Province 071002, China.
authors.forename: Xueliang
authors.initials: X
authors.lastname: Cheng
authors.affiliation: College of Physics Science and Technology, Hebei University, Baoding, Hebei Province 071002, China.
authors.forename: Kuifang
authors.initials: K
authors.lastname: Zhao
mesh_terms: D000393:Air Pollutants / Q000737:chemistry*; D009569:Nitric Oxide / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry; D013696:Temperature
chemical_list: D000393:Air Pollutants; D009569:Nitric Oxide; D009584:Nitrogen; D010100:Oxygen
references.citation: ScientificWorldJournal. 2013 Jul 16;2013:463160
references.pmid: 23970835
references.citation: J Hazard Mater. 2007 May 8;143(1-2):409-14
references.pmid: 17049159
references.citation: Chemosphere. 2005 Jan;58(2):163-75
references.pmid: 15571748
references.citation: J Environ Sci (China). 2005;17(3):445-7
references.pmid: 16083121
references.citation: Environ Sci Technol. 2003 Jun 1;37(11):2563-7
references.pmid: 12831044
references.citation: J Phys Chem A. 2005 Jun 9;109(22):4930-8
references.pmid: 16833840
references.citation: Chem Commun (Camb). 2013 Oct 18;49(81):9353-5
references.pmid: 24003442
references.citation: J Hazard Mater. 2011 Dec 15;197:220-8
references.pmid: 21982539
references.citation: J Phys Chem A. 2005 Jul 21;109(28):6255-63
references.pmid: 16833966