Efficient degradation of fulvic acids in water by catalytic ozonation with CeO2/AC
作者： Hangdao Qin , Honglin Chen , Xiaoming Zhang , Guo Yang , Yujun Feng
DOI: 10.1002/JCTB.4222
关键词: Cerium oxide 、 Inorganic chemistry 、 Reaction rate constant 、 Chemistry 、 Leachate 、 Calcination 、 Degradation (geology) 、 Activated carbon 、 Catalysis 、 Cerium
摘要: BACKGROUND Fulvic acids (FA), the main organic compounds in landfill leachate, are toxic and bio-resistant compounds. Ozonation is effective removing non-biodegradable components addition of catalysts can improve removal rates. The objective this study to prepare CeO2/AC catalyst for catalytic ozonation FA. RESULTS The cerium precursor, calcination atmosphere temperature changed percentage Ce3+ on surface, thus affecting performance catalyst. A linear relationship was established between correcting apparent rate constant FA degradation (kapp/SBET) surface. with 5% Ce loading calcined under hydrogen at 450 °C showed highest activity, allowing a efficiency 83%. ozone utilization were enhanced O3/CeO2/AC compared alone. CONCLUSION Ce3+ surface active site ozonation, indicating feasible way CeO2/AC. process may be applied as promising treatment method leachate. © 2013 Society Chemical Industry
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