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RSC Adv

Title:		Characteristics and mechanism of toluene removal by double dielectric barrier discharge combined with an Fe(2)O(3)/TiO(2)/gamma-Al(2)O(3) catalyst
Author(s):		Wang R; Ren J; Wu J; Wu L;
Address:		"State Key Laboratory of Safety and Health for Metal Mines Maanshan 243000 China 564044540@qq.com. Sinosteel Maanshan General Institute of Mining Research Co., Ltd. Maanshan 243000 China. Huawei National Engineering Research Center of efficient recycling for Metal Mineral Resources Co., Ltd. Maanshan 243000 China"
Journal Title:		RSC Adv
Year:		2020
Volume:		20201113
Issue:		68
Page Number:		41511 - 41522
DOI:		10.1039/d0ra07938c
ISSN/ISBN:		2046-2069 (Electronic) 2046-2069 (Linking)
Abstract:		"Removal of volatile organic compounds (VOCs) by non-thermal plasma technology produced by dielectric barrier discharge has become a hotspot due to its rapid reaction at room temperature, convenience without preheating and high removal efficiency of VOCs. Ways to improve the removal efficiency of mixed VOCs and the control of by-products in the discharge process are urgently needed. In view of the above shortcomings, the research progress of catalysts to improve the removal efficiency of VOCs by dielectric barrier discharge in recent years was reviewed; in this research, we conducted experiments on the removal efficiency of toluene under high flow rate experimental conditions (input voltage 10-70 V, mixed gas flow rate 1 m(3) h(-1), inlet concentration 1000 mg m(-3)). The research used gamma-Al(2)O(3), TiO(2)/gamma-Al(2)O(3) and Fe(2)O(3)/TiO(2)/gamma-Al(2)O(3) as catalysts in a reactor with a discharge gap of 6 mm, and a 99.7% removal efficiency of toluene was achieved when the SIE was 183.4 J L(-1). The added catalyst significantly reduced the concentration of by-products. At the same time, experiments with multiple catalysts to improve the removal efficiency and the performance of the discharge effect under different humidity levels were analyzed. The removal efficiency of toluene was optimized and recyclable, the formation of by-products was effectively suppressed when the catalysts in the reactor were Fe(2)O(3)/TiO(2)/gamma-Al(2)O(3), TiO(2)/gamma-Al(2)O(3) and gamma-Al(2)O(3), and the discharge length was 1 : 2 : 2"
Keywords:
Notes:		"PubMed-not-MEDLINEWang, Rui Ren, Jiaze Wu, Jiangyou Wu, Lanlan eng England 2020/11/13 RSC Adv. 2020 Nov 13; 10(68):41511-41522. doi: 10.1039/d0ra07938c. eCollection 2020 Nov 11"