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Characteristics and mechanism of toluene removal by double dielectric barrier discharge combined with an Fe(2)O(3)/TiO(2)/γ-Al(2)O(3) catalyst

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 mix...

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Autores principales: Wang, Rui, Ren, Jiaze, Wu, Jiangyou, Wu, Lanlan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9057756/
https://www.ncbi.nlm.nih.gov/pubmed/35516553
http://dx.doi.org/10.1039/d0ra07938c
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author Wang, Rui
Ren, Jiaze
Wu, Jiangyou
Wu, Lanlan
author_facet Wang, Rui
Ren, Jiaze
Wu, Jiangyou
Wu, Lanlan
author_sort Wang, Rui
collection PubMed
description 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 γ-Al(2)O(3), TiO(2)/γ-Al(2)O(3) and Fe(2)O(3)/TiO(2)/γ-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)/γ-Al(2)O(3), TiO(2)/γ-Al(2)O(3) and γ-Al(2)O(3), and the discharge length was 1 : 2 : 2.
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spelling pubmed-90577562022-05-04 Characteristics and mechanism of toluene removal by double dielectric barrier discharge combined with an Fe(2)O(3)/TiO(2)/γ-Al(2)O(3) catalyst Wang, Rui Ren, Jiaze Wu, Jiangyou Wu, Lanlan RSC Adv Chemistry 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 γ-Al(2)O(3), TiO(2)/γ-Al(2)O(3) and Fe(2)O(3)/TiO(2)/γ-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)/γ-Al(2)O(3), TiO(2)/γ-Al(2)O(3) and γ-Al(2)O(3), and the discharge length was 1 : 2 : 2. The Royal Society of Chemistry 2020-11-13 /pmc/articles/PMC9057756/ /pubmed/35516553 http://dx.doi.org/10.1039/d0ra07938c Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Wang, Rui
Ren, Jiaze
Wu, Jiangyou
Wu, Lanlan
Characteristics and mechanism of toluene removal by double dielectric barrier discharge combined with an Fe(2)O(3)/TiO(2)/γ-Al(2)O(3) catalyst
title Characteristics and mechanism of toluene removal by double dielectric barrier discharge combined with an Fe(2)O(3)/TiO(2)/γ-Al(2)O(3) catalyst
title_full Characteristics and mechanism of toluene removal by double dielectric barrier discharge combined with an Fe(2)O(3)/TiO(2)/γ-Al(2)O(3) catalyst
title_fullStr Characteristics and mechanism of toluene removal by double dielectric barrier discharge combined with an Fe(2)O(3)/TiO(2)/γ-Al(2)O(3) catalyst
title_full_unstemmed Characteristics and mechanism of toluene removal by double dielectric barrier discharge combined with an Fe(2)O(3)/TiO(2)/γ-Al(2)O(3) catalyst
title_short Characteristics and mechanism of toluene removal by double dielectric barrier discharge combined with an Fe(2)O(3)/TiO(2)/γ-Al(2)O(3) catalyst
title_sort characteristics and mechanism of toluene removal by double dielectric barrier discharge combined with an fe(2)o(3)/tio(2)/γ-al(2)o(3) catalyst
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9057756/
https://www.ncbi.nlm.nih.gov/pubmed/35516553
http://dx.doi.org/10.1039/d0ra07938c
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