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Chemosphere

Title:		"Dielectric barrier discharge coupled with Fe(2+), Mn(2+) and Cu(2+) scrubbing for toluene removal"
Author(s):		Qin C; Jiang C; Guo M; Liu R; Yu R; Huang J; Yan D; Li S; Dang X;
Address:		"School of Environment & Municipal Engineering, Xi'an University of Architecture & Technology, Xi'an, 710055, China. Research Center of Air Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China. School of Environment & Municipal Engineering, Xi'an University of Architecture & Technology, Xi'an, 710055, China. Electronic address: xiaoqingdang@hotmail.com"
Journal Title:		Chemosphere
Year:		2022
Volume:		20211216
Issue:
Page Number:		133306 -
DOI:		10.1016/j.chemosphere.2021.133306
ISSN/ISBN:		1879-1298 (Electronic) 0045-6535 (Linking)
Abstract:		"By-product ozone emission is one of the challenges for applying dielectric barrier discharge (DBD) technology for volatile organic compounds (VOCs) removal. In this study, a DBD reactor followed by a wet scrubber (WS) containing a solution of metal ions (Fe(2+)/Mn(2+)/Cu(2+)) was used to reuse ozone for further oxidation of typical VOC toluene. Compared with the degradation effect of the DBD reactor alone, DBD coupled WS/iron system not only improved the toluene removal efficiency but also significantly reduced the ozone emission. The ozone removal efficiency reached as high as 98% in the DBD coupled WS/Fe(2+) system. Electron paramagnetic resonance (EPR) tests showed that ozone was converted into radicals such as hydroxyl radicals in Fe(2+) and Cu(2+) solution, which further oxidized toluene in WS/iron. Quenching experiments showed that the contribution for toluene degradation by radicals was up to 75% and 62% in Fe(2+) and Mn(2+) reactor, respectively. This study demonstrates that the DBD coupled WS system has the potential to be an environmentally friendly technology for gaseous VOCs removal"
Keywords:		Catalysis Oxidation-Reduction *Ozone Toluene *Volatile Organic Compounds Dielectric barrier discharge Ozone Wet scrubber;
Notes:		"MedlineQin, Caihong Jiang, Chaochao Guo, Mengke Liu, Rongrong Yu, Rui Huang, Jiayu Yan, Dongjie Li, Shijie Dang, Xiaoqing eng England 2021/12/20 Chemosphere. 2022 Mar; 290:133306. doi: 10.1016/j.chemosphere.2021.133306. Epub 2021 Dec 16"