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A Study on the Operational Variables of the UV-TiO$_2$ Based Photocatalytic Air Cleaning System  

Han, Chang-Seok (School of Civil and Environmental Engineering, Yeungnam University)
Chang, Hyuk-Sang (School of Civil and Environmental Engineering, Yeungnam University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.30, no.3, 2008 , pp. 293-301 More about this Journal
Abstract
A study on the operational variables of the UV-TiO$_2$ based photocatalytic air cleaning system was tried. In this study, to examine effects as various air cleaning system conditions, a duct-type reactor was made, and TiO$_2$ was immobilized on a stainless mesh. Benzene was chosen as a target compound. Removal experiments for benzene were done under different initial benzene concentration, air velocity, TiO$_2$ loading, area coated TiO$_2$ as the same TiO$_2$ loading, and UV light intensity conditions. During the experiments, relative humidity was 55%, and reactor temperature was 45$^{\circ}C$. As a result, the photocatalytic degradation of benzene decreased as the inlet concentration increased. But the photocatalytic degradation increased as the concentration boundary layer thickness, amount of TiO$_2$, area coated TiO$_2$ as the same amount of TiO$_2$, and UV light intensity increased. Based on results of current study, they can be applied to the design of air cleaning system over low level VOCs in the indoor air.
Keywords
Benzene; UV; TiO$_2$; Photocatalytic Reaction; Volatile Organic Compounds(VOCs); Boundary Layer;
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Times Cited By KSCI : 3  (Citation Analysis)
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