Photocatalytic Degradation of Humic Acid by Fe-TiO2 Supported on Spherical Activated Carbon with Enhanced Activity

Fe-TiO2 supported on spherical activated carbon (Fe-TiO2/SAC) with different Fe contents was prepared by heat treatment process after ion exchange method. The prepared Fe-TiO2/SAC was characterized by SEM, EDS, and BET. Batch experiments for photocatalytic degradation of humic acid by Fe-TiO2/SAC we...

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Published inInternational journal of photoenergy Vol. 2013; no. 2013; pp. 1 - 5
Main Authors Suh, Jeong-Kwon, Yoon, Ji-Won, Hong, Ji-Sook, Baek, Mi-Hwa
Format Journal Article
LanguageEnglish
Published Cairo, Egypt Hindawi Puplishing Corporation 01.01.2013
Hindawi Publishing Corporation
Hindawi Limited
Subjects
Acids
Activated carbon
Aqueous solutions
Carbon
Chemical oxygen demand
Degradation
Fluidized beds
Humic acids
Iron
Light
Optimization
Photocatalysis
Porous materials
Scanning electron microscopy
Solar energy
Wavelengths
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Summary:Fe-TiO2 supported on spherical activated carbon (Fe-TiO2/SAC) with different Fe contents was prepared by heat treatment process after ion exchange method. The prepared Fe-TiO2/SAC was characterized by SEM, EDS, and BET. Batch experiments for photocatalytic degradation of humic acid by Fe-TiO2/SAC were carried out in the fluidized bed photoreactor. It was found that 0 wt% Fe-TiO2/SAC had high photocatalytic activity in the wavelength range of 100~280 nm. However, Fe-TiO2/SAC with Fe contents of 0.4, 0.6, and 0.8 wt% exhibited higher photocatalytic activity than 0 wt% Fe-TiO2/SAC in the wavelength range of 315~400 nm compared to that of 100~280 nm. The optimum Fe content was 0.6 wt% for maximum photocatalytic degradation of humic acid. Moreover, Fe-TiO2/SAC does not require an additional process step for separation of photocatalyst from treated water after photocatalysis.
Bibliography:ObjectType-Article-2
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ISSN:1110-662X
1687-529X
DOI:10.1155/2013/296821