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Decolorization of Dye Using Immobilized Photocatalyst onto Sponge  

Kim, Dong-Seog (Department of Environmental Science, Catholig University of Daegu)
Park, Young-Seek (Division of Health Science, Daegu University)
Publication Information
Journal of Environmental Health Sciences / v.31, no.5, 2005 , pp. 415-422 More about this Journal
Abstract
The photocatalytic decolorization of Reactive Red 2B(RR2B) was studied using immobilized photocatalyst/UV System. Two pairs of 20 W UV-B and UV-C lamps were employed as the light source. Immobilization of $TiO_2$ was carried out using sponge (as the photocatalyst body) and silicone sealant(as the binder). The effects of parameters such as the thickness, pore size of sponge photocatalyst and attached material on the reactor bottom were investigated. The results showed that the optimum thickness of sponge photocatalyst was 1 cm. Decolorization of reactor which had the bottom coated $TiO_2$ was higher than that of reactor attached aluminum plate. Decolorization of photocatalyst with large pore size(mean pore size, 3.8 mm) was higher than that of the small(mean pore size, 1.75 mm). Initial decolorization of RR2B could be descrived using the Langmuir-Hinshelwood(L-H) model and gave constant values of $0.55mg/l{\cdot}min(k)\;and\;2.65{\times}10^{-2}l/mg(K)$, respectively.
Keywords
$UV/TiO_2$; sponge photocatalyst; light intensity; dye; thickness; immobilization;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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