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Decolorization of AZO dyes using catalytic ozonation |
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| Authors: | Chung-Hsin Wu Chao-Yin Kuo and Chung-Liang Chang |
| Institution: | (1) Department of Environmental Engineering, Da-Yeh University, 112, Shan-Jiau Road, Da-Tsuen, Chang-Hua, Taiwan, R.O.C.;(2) Department of Safety Health and Environmental Engineering, National Yunlin University of Science and Technology, Touliu, Yunlin, Taiwan, R.O.C.;(3) Department of Environmental Engineering and Health, Yuanpei University of Science and Technology, Hsinchu, Taiwan, R.O.C. |
| Abstract: | Decolorization of C.I. Reactive Red 2 (RR2) and C.I. Acid Orange 6 (AO6) using a catalytic ozonation system was evaluated. The decolorization rates for RR2 and AO6 were accelerated by at least 30% by adding MnO2 to the O3 system; additionally, the decolorization rate increased as the MnO2 dosage and ozone power consumption increased. Enhanced MnO2 catalytic ozonation was more apparent for AO6 than for RR2. |
| Keywords: | O3 MnO2 C I Reactive Red 2 C I Acid Orange 6 |
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