Catalytic ozonation of azo dye active brilliant red X-3B in water with natural mineral brucite |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Nanjing University, Nanjing, 210093, PR China;2. Department of Earth Sciences, Nanjing University, Nanjing 210093, PR China;1. Division of Environment Technology and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China;2. State Key Laboratory of Heavy Oil Processing, Department of Chemical Engineering, China University of Petroleum, 18 Fuxue Road, Beijing, 102249, China;3. State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, 18 Fuxue Road, Beijing, 102249, China;4. Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, Western Australia, 6845, Australia;5. School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, Western Australia 6027, Australia;1. Beijing Engineering Research Center of Process Pollution Control, Division of Environmental Engineering and Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;2. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Natural mineral brucite was used directly in catalytic ozonation of dye wastewater of active brilliant red X-3B. Compared with single ozonation, degradation of X-3B increased from 47% to 89%, and removal rate of COD increased from 9% to 32.5% in catalytic ozonation for 15 min. The catalytic ozonation of X-3B followed a direct oxidization mechanism by ozone molecule, and this was actually a homogeneous catalysis of OH? due to dissolution of Mg(OH)2 from natural brucite. As a natural mineral catalyst, brucite has supplied an economical and feasible choice for catalytic ozonation of X-3B in industrial wastewater. |
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