Generation of reactive species by gas-phase dielectric barrier discharges / Qiong Tang in Industrial & engineering chemistry research, Vol. 50 N° 17 (Septembre 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 17 (Septembre 2011) . - pp. 9839–9846 Titre : Generation of reactive species by gas-phase dielectric barrier discharges Type de document : texte imprimé Auteurs : Qiong Tang, Auteur ; Wenju Jiang, Auteur ; Ying Cheng, Auteur Année de publication : 2011 Article en page(s) : pp. 9839–9846 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Gas phase Dielectric barrier Résumé : This work presents a study of discharge characteristics and generation of reactive species such as OH• radical, hydrogen peroxide, and ozone by a gas-phase dielectric barrier discharge (DBD) process. A series of experiments were performed to investigate the effects of various parameters such as input energy density, feeding gas, gas flow rate, and electrode gap on the formation of OH• radical, hydrogen peroxide, and ozone in solution. The pH and N-containing products (NO2– and NO3–) in solution were also determined. The experimental data show that formation rates of OH• radical, hydrogen peroxide, and ozone in solution were found to depend on the input energy density, feeding gas, gas flow rate, and electrode gap. When pure oxygen was used as the feeding gas, O3 was the major reactive species. The OH• radical was observed to be the major reactive species generated and its concentration was approximately 12 times higher than that of O3 when air with 100% relative humidity (RH) was used as the feeding gas. NO3– byproducts formed in the solution were partly responsible for the pH decrease. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie200039w [article] Generation of reactive species by gas-phase dielectric barrier discharges [texte imprimé] / Qiong Tang, Auteur ; Wenju Jiang, Auteur ; Ying Cheng, Auteur . - 2011 . - pp. 9839–9846. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 17 (Septembre 2011) . - pp. 9839–9846 Mots-clés : Gas phase Dielectric barrier Résumé : This work presents a study of discharge characteristics and generation of reactive species such as OH• radical, hydrogen peroxide, and ozone by a gas-phase dielectric barrier discharge (DBD) process. A series of experiments were performed to investigate the effects of various parameters such as input energy density, feeding gas, gas flow rate, and electrode gap on the formation of OH• radical, hydrogen peroxide, and ozone in solution. The pH and N-containing products (NO2– and NO3–) in solution were also determined. The experimental data show that formation rates of OH• radical, hydrogen peroxide, and ozone in solution were found to depend on the input energy density, feeding gas, gas flow rate, and electrode gap. When pure oxygen was used as the feeding gas, O3 was the major reactive species. The OH• radical was observed to be the major reactive species generated and its concentration was approximately 12 times higher than that of O3 when air with 100% relative humidity (RH) was used as the feeding gas. NO3– byproducts formed in the solution were partly responsible for the pH decrease. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie200039w

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