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Degradation and Ecotoxicity Reduction of Reactive Dye by Using Advanced Oxidation Process  

Seo, Kyung Ae (Yeongsan River Environment Research Center)
Park, Jae Hong (Water Pollution Load Management Research Division, National Institute of Environmental Research)
Jung, Soo Jung (Yeongsan River Environment Research Center)
Lim, Byung Jin (Yeongsan River Environment Research Center)
Publication Information
Journal of Korean Society on Water Environment / v.29, no.2, 2013 , pp. 204-211 More about this Journal
Abstract
In this study, the deriving optimum conditions for decolorization of Acid Orange II solution was carried using $TiO_2$ advanced oxidation process. After that, on base of the deriving results, the range of dye concentration was estimated. In addition, acute toxicity test was also carried to assess toxicity unit according to decolorization and TOC removal. In case of the blockage of light, 20 mg/L of dye solution, and 0.5 g $TiO_2$, the effect of decolorization at pH 3 was larger than at pH 6 and 10, so it was shown that decolorization is dependent on pH. The use of 5 g $TiO_2$ showed best performance of decolorization, but that of 3 g $TiO_2$ was chosen to optimum condition in considering of economical aspects. Four light sources, sun, fluorescent lamp, BLB lamp, and UV-B lamp, were used and decolorization was 99.4% and 100% at 50 mg/L, 98.6% and 99.7% at 100 mg/L for sun and UV-B lamp, respectively. In spite of the optimum condition of decolorization at pH 3, the evaluation of acute toxicity test showed highly toxic. In conclusion, although the optimum treatment of dye solution is performed, water ecology can be polluted in discharging it into water system. Therefore, it is needed to study of water ecological system with dye water treatment, and it takes all the circumstances into consideration.
Keywords
Acid Orange (II); Light source; pH; $TiO_2$; Toxicity Unit (TU);
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Times Cited By KSCI : 1  (Citation Analysis)
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