Photocatalytic oxidation of trimethylamine and isovaleraldehyde in an annular reactor: Influence of the mass transfer and the relative humidity

Assadi, Aymen Amine; Bouzaza, Abdelkrim; Wolbert, Dominique

doi:10.1016/j.jphotochem.2012.03.020

Cited by 64 publications

(61 citation statements)

References 38 publications

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“…It is therefore necessary to reduce emissions, or if reduction is not possible, treatment with economically and environmentally-sustainable technologies. For this purpose, photocatalytic and dielectric barrier discharge (DBD) treatments are innovative techniques that have advantages (such as a reduced environmental impact) over conventional techniques, however more studies are necessary to develop/implement their industrial applications to make them viable alternatives to existing treatment technologies [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Isovaleraldehyde degradation using UV photocatalytic and dielectric barrier discharge reactors, and their combinations

Palau¹,

Assadi

Penya-Roja³

et al. 2015

Journal of Photochemistry and Photobiology A: Chemistry

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Section: Introductionmentioning

confidence: 99%

Isovaleraldehyde degradation using UV photocatalytic and dielectric barrier discharge reactors, and their combinations

Palau¹,

Assadi

Penya-Roja³

et al. 2015

Journal of Photochemistry and Photobiology A: Chemistry

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“…In these photocatalytic mechanisms, and NO 3 -can be detected as the by-products of NH 3 decomposition on the catalyst surface [37,38]. Methanol, acetone, NO, and NO 2 were also reported to be intermediates of TMA during photodegradation [39]. In the case of sulfur compounds (such as H 2 S and DMS), SO 4…”

Section: Removal Efficiency Of Photocatalytic System For Volatile Odomentioning

confidence: 99%

Deodorization of food-related nuisances from a refrigerator: The feasibility test of photocatalytic system

Kim

et al. 2015

Chemical Engineering Journal

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“…This result implied that the quantity of generated intermediates is extremely important. The competitive adsorption effect between intermediates and reactants became more significant with increasing initial concentrations (Assadi et al, 2012). Some oxidation intermediates could not be reduced easily and occupied available active sites on the TiO 2 surface, thus leading to effective reduction in the number of active sites.…”

Section: Gas-phase Reaction Intermediatesmentioning

confidence: 99%

Photocatalytic Degradation of Volatile Organic Compounds in an Annular Reactor Under Realistic Indoor Conditions

Zhengjie¹,

LiuPeng²,

HuangFeng³

2015

Environmental Engineering Science

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This article presents an experimental investigation of the photocatalytic oxidation of several volatile organic compounds (formaldehyde, benzene, and toluene) under realistic indoor conditions. A novel annular reactor coated with TiO 2 was designed to perform kinetic studies on (1) pollutant removal, (2) mineralization by CO 2 formation, and (3) intermediate formation and removal in the gas phase. The pollutant(s) was/were injected at a constant rate in a 1.95-m 3 environmental chamber ventilated at a constant rate between 3.8 and 4.2 m 3 /h. The annular reactor was installed on an external recirculation loop, and processed air was reintroduced into the chamber. Recirculation rates were set at 25-200 m 3 /h, corresponding to recycle ratios between 6 and 50. Reaction area and residence time were greatly increased when fins were added in the annular reactor, and the removal efficiency and mineralization rate were, therefore, obviously improved. The pressure drop produced by the fins was insignificant and increased as a function of the recirculation rate. Intermediates were identified by using the GC-MS instrument, and GC-FID was used for the CO 2 measurements. Benzaldehyde, benzyl alcohol, benzene, phenol, and acetone (or propionaldehyde) were the main intermediates in the gas phase. Increase in residence time for a reactor operating in a high face velocity regime was an important factor that led to the complete oxidation of primary and secondary pollutants. For mixture oxidation, selectivity toward benzene and toluene blocked the elimination of formaldehyde. A simple model was developed to predict removal efficiency by the recycle ratio. Model predictions showed good agreement with the experimental results.

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Photocatalytic oxidation of trimethylamine and isovaleraldehyde in an annular reactor: Influence of the mass transfer and the relative humidity

Cited by 64 publications

References 38 publications

Isovaleraldehyde degradation using UV photocatalytic and dielectric barrier discharge reactors, and their combinations

Isovaleraldehyde degradation using UV photocatalytic and dielectric barrier discharge reactors, and their combinations

Deodorization of food-related nuisances from a refrigerator: The feasibility test of photocatalytic system

Photocatalytic Degradation of Volatile Organic Compounds in an Annular Reactor Under Realistic Indoor Conditions

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