Role of adsorption in the photodegradation of a dye, acid-blue 92
- Authors
- Kim, MS[Kim, Moon-Sun]; Lee, JM[Lee, Jong-Min]; Hwang, B[Hwang, Byungho]; Bae, W[Bae, Wookeun]; Kim, BW[Kim, Byung-Woo]
- Issue Date
- 2006
- Publisher
- INDERSCIENCE ENTERPRISES LTD
- Keywords
- acid blue 92; photodegradation; overall adsorption rate; TiO2
- Citation
- INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION, v.27, no.1-3, pp.247 - 258
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION
- Volume
- 27
- Number
- 1-3
- Start Page
- 247
- End Page
- 258
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/88891
- ISSN
- 0957-4352
- Abstract
- The effect of adsorption onto the TiO2 particle surface, on the photodegradation rate of a dye acid-blue 92, was investigated. Overall adsorption rate was estimated by using a differential bed reactor with TiO2 particles and without UV radiation, while photodegradation rate was determined in a TiO2 immobilised photoreactor with UV radiation. Overall adsorption rate of the dye acid-blue 92 was higher in a strong acidic region at pH 3 than in a weak acidic region at pH 6 and was the lowest at pH 7 and 8. The photodegradation rate of the dye acid-blue 92 with respect to initial concentration could be described as an apparent first order kinetics, where the rate constants (K) were estimated as 0.012, 0.010, and 0.008 min(-1) at pH 3, 5, and 7, respectively. The change of pH affected both photodegradation and adsorption rates of the dye acid-blue 92 and the close relationship between overall adsorption and photodegradation rates could be observed dependently on the pH variation.
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Collections - Engineering > School of Chemical Engineering > 1. Journal Articles
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