Kinetics of photocatalytic oxidation of trace organic compounds over titanium dioxide

Chen, Paris Honglay; Jenq, Christina H.

doi:10.1016/s0160-4120(98)00077-4

Cited by 31 publications

(10 citation statements)

References 19 publications

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“…At the low TOC level, less than 10 mg/l, TiO 2 -photocatlyzed wastewater oxidation process generally exhibits pseudo first-order kinetics with respect to the dissolved TOC (Figure3); comparable kinetics were observed at relatively high TOC level, 18.9 mg/l (data not shown). This behaviour is consistent with previous observations by Chen et al [5].…”

Section: Wastewater Photooxidation Kineticssupporting

confidence: 94%

Titanium-based photocatalysis as the pretreatment for ultrafiltration of secondary municipal effluent with low concentration of organic matters

Liu¹,

Li²

2007

WIT Transactions on Ecology and the Environment, Vol 103

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Ultrafiltration (UF) has been regarded as a cost-effective option compared to NF and RO for the municipal effluent reclamation process. But the fouling caused by organic matter from the biologically treated sewage effluent is still a serious problem in the process. The photocatalysis was employed as the pretreatment measure for the ultrafiltration of secondary effluents. The fouling potential k was significantly lowered by this pretreatment measure. The effects of catalyst type (anatase, rutile, and Degussa P-25), catalyst dosage, pH value, and UV light intensity on fouling potential variation and dissolved organic carbon (DOC) removal were investigated. The results showed that the presence of UV and TiO 2 improved DOC removal ratio. The effect of photocatalyst type on fouling potential abatement was compared. The pH value and catalyst concentration were optimized to get the highest fouling potential reduction and DOC removal efficiency.

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Section: Wastewater Photooxidation Kineticssupporting

confidence: 94%

Titanium-based photocatalysis as the pretreatment for ultrafiltration of secondary municipal effluent with low concentration of organic matters

Liu¹,

Li²

2007

WIT Transactions on Ecology and the Environment, Vol 103

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“…Many researchers have proposed that the photocatalytic decontamination of a wide range of pollutants by TiO 2 follow the well-known Langmuir-Hinshelwood (L-H) kinetics model [9,10,14,[43][44][45][46]. When this L-H model is applied to the immobilized TiO 2 , some assumptions have to be made considering the possible involvement of the mass transport effects.…”

Section: Kineticsmentioning

confidence: 99%

Preparation and application of nanoglued binary titania–silica aerogel

Luo

Cooper

Fan

2009

Journal of Hazardous Materials

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“…It can be observed from the previous literatures (Bangun and Adesina 1998;Chen and Jenq 1998) that the modified LangmuirHinshelwood (L-H) kinetic expression is successfully applied to analyze the heterogeneous photocatalytic reaction.…”

Section: Photodegradation Kinetics Of Dcfmentioning

confidence: 99%

Aqueous degradation kinetics of pharmaceutical drug diclofenac by photocatalysis using nanostructured titania–zirconia composite catalyst

Das

Barodia

Sengupta

et al. 2014

Int. J. Environ. Sci. Technol.

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Diclofenac (DCF) is an anti-inflammatory pharmaceutical drug, and its presence in a trace amount in waste water makes severe environmental pollution. The degradation of DCF was investigated by a photocatalytic process in presence of ultra violet irradiation at room temperature using titania and titania-zirconia nanocomposite catalysts in a batch reactor. The composite catalyst was prepared by sol-gel method and characterized by X-ray diffraction, transmission electron microscopy as well as BET surface area analyzer. The effect of various process parameters such as catalyst loading, initial concentration of DCF and pH of the experimental solution was observed on the degradation of DCF. The titania-zirconia nanocomposites exhibited reasonably higher photocatalytic activity than that of anatase form of titania without zirconia. The maximum removal of DCF of about 92.41 % was achieved using Zr/Ti mass ratio of 11.8 wt% composite catalyst. A rate equation was proposed for the degradation of DCF using the composite catalyst. The values of rate constant (k c ) and adsorption equilibrium constant (K 1 ) were found to vary with the catalyst content in the reaction mixture.

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Kinetics of photocatalytic oxidation of trace organic compounds over titanium dioxide

Cited by 31 publications

References 19 publications

Titanium-based photocatalysis as the pretreatment for ultrafiltration of secondary municipal effluent with low concentration of organic matters

Titanium-based photocatalysis as the pretreatment for ultrafiltration of secondary municipal effluent with low concentration of organic matters

Preparation and application of nanoglued binary titania–silica aerogel

Aqueous degradation kinetics of pharmaceutical drug diclofenac by photocatalysis using nanostructured titania–zirconia composite catalyst

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