Efficient degradation of gaseous benzene by VUV photolysis combined with ozone-assisted catalytic oxidation: Performance and mechanism

Huang, Huiling; Huang, Haibao; Zhan, Yanhui; Liu, Gaoyuan; Wang, Xuemei; Lu, Haoxian; Liang, Xiao; Feng, Qiuyu; Leung, Dennis Y.C.

doi:10.1016/j.apcatb.2015.12.055

Cited by 96 publications

(22 citation statements)

References 41 publications

(39 reference statements)

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“…This is because ODC powder is embedded in the polyolefin fiber to immobilize it. Therefore, to use the nonwoven ODC, it is necessary to consider the saturation of VOC gas adsorption on the ODC surface (Rezaei et al, 2013;Huang et al, 2016). However, covering the fiber completely protects it from oxidative destruction by O 3 and active species generated from O 3 so the fabric is durable and reusable.…”

Section: Nonwoven Odcmentioning

confidence: 99%

“…Using these adsorbents for OZCO allows VOCs to be decomposed and mineralized to CO and CO 2 , even under wet conditions (Einaga and Futamura, 2006;Einaga et al, 2013), but only a small percentage of VOCs reacted. UV irradiation of ODC powder increases the amount of VOCs decomposed CO 2 by OZCO (Sekiguchi et al, 2003;Huang et al, 2016). This is because UV irradiation generates OH radicals effectively from O 3 , which is concentrated around the ODC surface, according to the following equations (Reisz et al, 2003;Cuiping et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Ozone Catalytic Oxidation of Gaseous Toluene over MnO2-Based Ozone Decomposition Catalysts Immobilized on a Nonwoven Fabric

Sekiguchi

Kurita

Sankoda

et al. 2017

Aerosol Air Qual. Res.

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Degradation of toluene gas by ozone catalytic oxidation (OZCO) by using a MnO 2 -based ozone decomposition catalyst (ODC) was investigated to clarify the reactive site of ODC material with O 3 . An optimum structure for the ODC to remove O 3 and toluene were proposed. For honeycomb ODC, toluene degradation by OZCO occurred only around the entrance of the honeycomb ODC, and we expected that a thinner ODC would increase the toluene degradation efficiency. A nonwoven fabric on which ODC was immobilized was developed to decompose O 3 and volatile organic compounds simultaneously. The toluene degradation ratio and the mineralization of toluene to CO 2 were determined to evaluate the performance of the fabric. Furthermore, the effects of relative humidity and O 3 concentration on the decomposition and mineralization ratios were also investigated with or without 254 nm UV irradiation (UV 254 ). The fabric decomposed and mineralized toluene to CO 2 , even at low O 3 concentrations. Although high humidity reduced the degradation ratio of toluene, UV 254 irradiation improved the recovery of the degradation ratio and increased the mineralization ratio.

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Section: Nonwoven Odcmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ozone Catalytic Oxidation of Gaseous Toluene over MnO2-Based Ozone Decomposition Catalysts Immobilized on a Nonwoven Fabric

Sekiguchi

Kurita

Sankoda

et al. 2017

Aerosol Air Qual. Res.

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“…General VUV-based processes include the VUV photolysis (Alapi and Dombi, 2007a), VUV-PCO , VUV combined with Ozone-assisted Catalytic Oxidation (VUV-OZCO) (Huang, 2015). The sections below will focus on the oxidants generated from these three processes.…”

Section: Generation Of the Oxidantsmentioning

confidence: 99%

“…Huang et al (Huang, 2015) firstly developed this system to degrade VOCs and studied its performance and mechanism. The results show that both benzene and O 3 are completely removed by VUV-OZCO with Mn/ZSM-5 catalysts.…”

Section: Vuv Photolysis-ozone Catalytic Oxidation (Vuv-ozco)mentioning

confidence: 99%

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Recent Development of VUV-Based Processes for Air Pollutant Degradation

Huang

et al. 2016

Front. Environ. Sci.

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As air pollution poses a great challenge around the globe, it is essential to fashion out a way of efficiently degrading the air pollutants. Vacuum Ultraviolet (VUV)-based processes are an emerging and promising technology for environmental remediation such as air cleaning, wastewater treatment, and air/water disinfection. When VUV irradiation, photolysis, photocatalysis, and ozone-assisted oxidation are involved at the same time, it results in the fast degradation of air pollutants because of their strong oxidizing capacity. The mechanisms of how the oxidants are produced and how they react are discussed in this review. This paper focuses mainly on the three VUV-based oxidation processes including VUV photolysis, VUV combined with ozone-assisted oxidation, and VUV-PCO with emphasis on their mechanisms and applications. Also, the outlook of these processes are proposed in this paper.

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Degradation of Gaseous VOCs by Ultrasonication: Effect of Water Recirculation and Ozone Addition

Comia

Oliva

Zarra

et al. 2019

Frontiers in Water-Energy-Nexus—Nature-Based Solutions, Advanced Technologies and Best Practices for Environmental Sustainabili

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Efficient degradation of gaseous benzene by VUV photolysis combined with ozone-assisted catalytic oxidation: Performance and mechanism

Cited by 96 publications

References 41 publications

Ozone Catalytic Oxidation of Gaseous Toluene over MnO2-Based Ozone Decomposition Catalysts Immobilized on a Nonwoven Fabric

Ozone Catalytic Oxidation of Gaseous Toluene over MnO2-Based Ozone Decomposition Catalysts Immobilized on a Nonwoven Fabric

Recent Development of VUV-Based Processes for Air Pollutant Degradation

Degradation of Gaseous VOCs by Ultrasonication: Effect of Water Recirculation and Ozone Addition

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