| Title |
Degradation and Ecotoxicity Reduction of Reactive Dye by Using Advanced Oxidation Process |
| Authors |
서경애 ( Kyung Ae Seo ) ; 박재홍 ( Jae Hong Park ) ; 정수정 ( Soo Jung Jung ) ; 임병진 ( Byung Jin Lim ) |
| Keywords |
Acid Orange 2; Light source; pH; TiO2; Toxicity Unit TU |
| Abstract |
In this study, the deriving optimum conditions for decolorization of Acid Orange II solution was carried using TiO2 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, 20mg/L of dye solution, and 0.5g TiO2, 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 TiO2 showed best performance of decolorization, but that of 3 g TiO2 was chosen to optimum 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 declorization 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. |