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The Effect of Initial pH and Dose of $TiO_2$ on Chloroform Removal in Photocatalytic Process using Compound Parabolic Concentrator Reactor System  

Cho, Sang-Hyun (School of Civil, Environmental and Architectural Engineering, Korea University)
Cui, Mingcan (School of Civil, Environmental and Architectural Engineering, Korea University)
Nam, Sang-Geon (School of Civil, Environmental and Architectural Engineering, Korea University)
Jung, Hee-Suk (Center for Environmental Technology Research, Korea Institute of Science and Technology)
Khim, Jee-Hyeong (School of Civil, Environmental and Architectural Engineering, Korea University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.32, no.12, 2010 , pp. 1147-1153 More about this Journal
Abstract
To evaluate the solar photocatalytic degradation efficiency of chloroform in a real solar-light driven compound parabolic concentrators (CPCs) system, $TiO_2$ was irradiated with a metalhalide lamp (1000 W), which has a similar wavelength to sunlight. The results were applied to a pilot scale reactor system by converting the data to a standardized illumination time. In addition, the effects of initial pH and the $TiO_2$ dose on the photocatalytic degradation of chloroform were investigated. The results were compared with the specific surface area (S.S.A) and particle size of $TiO_2$, which changed according to the pH, to determine the relationship between the S.S.A, particle size and the photocatalytic degradation of chloroform. The experiment was carried out at pH 4~7 using 0.1, 0.2, 0.4 g/L of $TiO_2$. The particle size and specific surface area of $TiO_2$ were measured. There was no significant difference between the variables. However, pH affects the particle size distribution and specific surface area of $TiO_2$. Inaddition, the activation of a photocatalyst did not show a linear relationship with the specific surface area of $TiO_2$ in the photocatalytic degradation of chloroform.
Keywords
Chloroform; CPCs; Photocatalysis; pH; Dose; $TiO_2$;
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Times Cited By KSCI : 1  (Citation Analysis)
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