Microwave-assisted photocatalytic degradation of trichloroethylene using titanium dioxide

Chih Ju G. Jou; Chien Li Lee; Cheng Hsien Tsai; H. Paul Wang

doi:10.1089/ees.2007.0155

Microwave-assisted photocatalytic degradation of trichloroethylene using titanium dioxide

Chih Ju G. Jou, Chien Li Lee, Cheng Hsien Tsai, H. Paul Wang

Department of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Microwave (MW) energy was used to enhance the photocatalytic degradation of trichloroethylene (TCE) using titanium dioxide (TiO₂) as the catalyst. The reaction rate constant was determined using the Langmuir-Hinshelwood equation kinetic model. Additionally, the influence of the microwave energy level and application method, and TiO 2 dosage on TCE removal were studied. Higher microwave energy level and higher photocatalyst concentration lead to better TCE removal. However, when the TiO₂ dosage exceeds 4 mg/mL, the TCE removal efficiency is not obviously enhanced, demonstrating that the TCE removal is caused more by photocatalyses than microwave heat. Hence, major photo-oxidative reactions induced by microwave radiation to reduce TCE at the TiO₂ particle surface are mostly nonthermal.

Original language	English
Pages (from-to)	975-979
Number of pages	5
Journal	Environmental Engineering Science
Volume	25
Issue number	7
DOIs	https://doi.org/10.1089/ees.2007.0155
Publication status	Published - 2008 Sept 1

All Science Journal Classification (ASJC) codes

Environmental Chemistry
Waste Management and Disposal
Pollution

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abstract = "Microwave (MW) energy was used to enhance the photocatalytic degradation of trichloroethylene (TCE) using titanium dioxide (TiO2) as the catalyst. The reaction rate constant was determined using the Langmuir-Hinshelwood equation kinetic model. Additionally, the influence of the microwave energy level and application method, and TiO 2 dosage on TCE removal were studied. Higher microwave energy level and higher photocatalyst concentration lead to better TCE removal. However, when the TiO2 dosage exceeds 4 mg/mL, the TCE removal efficiency is not obviously enhanced, demonstrating that the TCE removal is caused more by photocatalyses than microwave heat. Hence, major photo-oxidative reactions induced by microwave radiation to reduce TCE at the TiO2 particle surface are mostly nonthermal.",

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AU - Jou, Chih Ju G.

AU - Lee, Chien Li

AU - Tsai, Cheng Hsien

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N2 - Microwave (MW) energy was used to enhance the photocatalytic degradation of trichloroethylene (TCE) using titanium dioxide (TiO2) as the catalyst. The reaction rate constant was determined using the Langmuir-Hinshelwood equation kinetic model. Additionally, the influence of the microwave energy level and application method, and TiO 2 dosage on TCE removal were studied. Higher microwave energy level and higher photocatalyst concentration lead to better TCE removal. However, when the TiO2 dosage exceeds 4 mg/mL, the TCE removal efficiency is not obviously enhanced, demonstrating that the TCE removal is caused more by photocatalyses than microwave heat. Hence, major photo-oxidative reactions induced by microwave radiation to reduce TCE at the TiO2 particle surface are mostly nonthermal.

AB - Microwave (MW) energy was used to enhance the photocatalytic degradation of trichloroethylene (TCE) using titanium dioxide (TiO2) as the catalyst. The reaction rate constant was determined using the Langmuir-Hinshelwood equation kinetic model. Additionally, the influence of the microwave energy level and application method, and TiO 2 dosage on TCE removal were studied. Higher microwave energy level and higher photocatalyst concentration lead to better TCE removal. However, when the TiO2 dosage exceeds 4 mg/mL, the TCE removal efficiency is not obviously enhanced, demonstrating that the TCE removal is caused more by photocatalyses than microwave heat. Hence, major photo-oxidative reactions induced by microwave radiation to reduce TCE at the TiO2 particle surface are mostly nonthermal.

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Microwave-assisted photocatalytic degradation of trichloroethylene using titanium dioxide

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