Repository of Research and Investigative Information

Repository of Research and Investigative Information

Kurdistan University of Medical Sciences

Decomposition of chlorinated volatile organic compounds (CVOCs) using NTP coupled with TiO2/GAC, ZnO/GAC, and TiO2-ZnO/GAC in a plasma-assisted catalysis system

(2015) Decomposition of chlorinated volatile organic compounds (CVOCs) using NTP coupled with TiO2/GAC, ZnO/GAC, and TiO2-ZnO/GAC in a plasma-assisted catalysis system. Journal of Electrostatics.

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Abstract

No study was found in the literature on the catalytic effect of TiO2/GAC (Granular activated carbon), ZnO/GAC, and TiO2-ZnO/GAC combined with non-thermal plasma (NTP) for the decomposition of chlorinated volatile organic compounds (CVOCs) in gas streams. In the present study, this catalytic NTP process was investigated to examine the effect of specific input energy (SIE), initial concentration, as well as residence time on the removal efficiency (RE) of CVOCs in a corona discharge reactor energized by a high frequency pulsed power supply. A dip-coating sol-gel impregnation technique was used to coat TiO2, ZnO, and mixture of TiO2-ZnO nanoparticles on GAC, which were then combined with NTP in a two-stage configuration. The results revealed that the efficacy of the catalysts was in the order TiO2-ZnO/GACâ� TiO2/GAC>ZnO/GAC with chloroform feeding, while when chlorobenzene introduced, the order changed to TiO2-ZnO/GAC > ZnO/GAC>TiO2/GAC. A significant enhancement was observed with RE as catalysts coupled with NTP in all cases and a RE of 100 was achieved in the presence of both TiO2/GAC and TiO2-ZnO/GAC at SIE of ca. 400JL-1. Considerable improvement was also noticed for coupling TiO2 and ZnO in both efficiency and catalyst life time. © 2014 Elsevier B.V.

Item Type: Article
Keywords: Activated carbon; Catalysis; Catalysts; Electric corona; Electric discharges; Granular materials; Plasma applications; Sol-gels; Volatile organic compounds; Zinc oxide, CVOCs; Granular activated carbons; Nonthermal plasma; TiO; ZnO, Titanium dioxide
Page Range: pp. 80-88
Journal or Publication Title: Journal of Electrostatics
Volume: 73
Publisher: Elsevier
Identification Number: 10.1016/j.elstat.2014.10.008
ISSN: 03043886
Depositing User: مهندس جمال محمودپور
URI: http://eprints.muk.ac.ir/id/eprint/784

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