Determination and risk assessment of by-products resulting from photocatalytic oxidation of toluene

Mo, Jinhan; Zhang, Yinping; Xu, Qiujian; Zhu, Yongfa; Lamson, Jennifer Joaquin; Zhao, Rongyi

doi:10.1016/j.apcatb.2009.01.015

Cited by 209 publications

(116 citation statements)

References 25 publications

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“…Hence, a simple model of assessment non-carcinogenic risk based on occupational exposure limit is characterized in terms of a HRI, which is defined as [34]:…”

Section: Calculation Of the Removal Efficiency Loading Rate And Elimmentioning

confidence: 99%

Treatment of organic waste gas in a paint plant by combined technique of biotrickling filtration with photocatalytic oxidation

Zhao

Chen

et al. 2012

Chemical Engineering Journal

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“…Hence, a simple model of assessment non-carcinogenic risk based on occupational exposure limit is characterized in terms of a HRI, which is defined as [34]:…”

Section: Calculation Of the Removal Efficiency Loading Rate And Elimmentioning

confidence: 99%

Treatment of organic waste gas in a paint plant by combined technique of biotrickling filtration with photocatalytic oxidation

Zhao

Chen

et al. 2012

Chemical Engineering Journal

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“…Degradation of sample D-1 resulted in similar byproducts namely formaldehyde, acetaldehyde, acetic acid, formic acid and traces of octenal (Table 4). Formaldehyde, acetaldehyde, formic acid and acetic acid are already literature known byproducts of photocatalytic toluene degradation [19]. The same applies to the formed byproducts of limonene [20].…”

Section: Results Of the Experiments In A 1 M 3 Emission Test Chambermentioning

confidence: 99%

Photocatalytic Degradation of Toluene, Butyl Acetate and Limonene under UV and Visible Light with Titanium Dioxide-Graphene Oxide as Photocatalyst

2017

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Abstract:Photocatalysis is a promising technique to reduce volatile organic compounds indoors. Titanium dioxide (TiO 2 ) is a frequently-used UV active photocatalyst. Because of the lack of UV light indoors, TiO 2 has to be modified to get its working range shifted into the visible light spectrum. In this study, the photocatalytic degradation of toluene, butyl acetate and limonene was investigated under UV LED light and blue LED light in emission test chambers with catalysts either made of pure TiO 2 or TiO 2 modified with graphene oxide (GO). TiO 2 coated with different GO amounts (0.75%-14%) were investigated to find an optimum ratio for the photocatalytic degradation of VOC in real indoor air concentrations. Most experiments were performed at a relative humidity of 0% in 20 L emission test chambers. Experiments at 40% relative humidity were done in a 1 m 3 emission test chamber to determine potential byproducts. Degradation under UV LED light could be achieved for all three compounds with almost all tested catalyst samples up to more than 95%. Limonene had the highest degradation of the three selected volatile organic compounds under blue LED light with all investigated catalyst samples.

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“…It is well known that conventional PCO has some disadvantages, such as catalyst deactivation (Peral and Ollis, 1997;Cao et al, 2000), low degradation rate (Mo et al, 2009), formation of toxic byproducts , recombination of electron-hole pair, and low efficiency (Mo et al, 2009;. It has proven that VUV-PCO can obviously improve the efficiency and stability performance of PCO of pollutants and reduce the generation of intermediates (Zhang and Liu, 2004;Yu and Lee, 2007;Huang et al, 2009;.…”

Section: Vuv-pco Without Ozone Oxidationmentioning

confidence: 99%

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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Determination and risk assessment of by-products resulting from photocatalytic oxidation of toluene

Cited by 209 publications

References 25 publications

Treatment of organic waste gas in a paint plant by combined technique of biotrickling filtration with photocatalytic oxidation

Treatment of organic waste gas in a paint plant by combined technique of biotrickling filtration with photocatalytic oxidation

Photocatalytic Degradation of Toluene, Butyl Acetate and Limonene under UV and Visible Light with Titanium Dioxide-Graphene Oxide as Photocatalyst

Recent Development of VUV-Based Processes for Air Pollutant Degradation

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