Continuous Treatment of Phenol over an Fe2O3/γ-Al2O3 Catalyst in a Fixed-Bed Reactor

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• 作者：Minghui Lu ; Yue Yao ; Lulu Gao ; Dongmei Mo ; Fang Lin…
• 关键词：Fe2O3/γ ; Al2O3 ; Catalytic oxidation ; Phenol ; Hydrogen peroxide ; Fixed ; bed reactor
• 刊名：Water, Air, and Soil Pollution
• 出版年：2015
• 出版时间：April 2015
• 年：2015
• 卷：226
• 期：4
• 全文大小：2,475 KB
• 参考文献：1. Bajaj, M, Gallert, C, Winter, J (2008) Biodegradation of high phenol containing synthetic wastewater by an aerobic fixed bed reactor. Bioresource Technology 99: pp. 8376-8381 CrossRef
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  3. Bhargava, SK, Tardio, J, Prasad, J, Foger, K, Akolekar, DB, Grocott, SC (2006) Wet oxidation and catalytic wet oxidation. Industrial & Engineering Chemistry Research 45: pp. 1221-1258 CrossRef
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  7. Chaliha, S, Bhattacharyya, KG (2008) Wet oxidative method for removal of 2,4,6-trichlorophenol in water using Fe(III), Co(II), Ni(II) supported MCM41 catalysts. Journal of Hazardous Materials 150: pp. 728-736 CrossRef
  8. Crowther, N (2003) Iron-containing silicalites for phenol catalytic wet peroxidation. Applied Catalysis B: Environmental 46: pp. 293-305 CrossRef
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  12. Duarte, F, Morais, V, Maldonado-Hódar, FJ, Madeira, LM (2013) Treatment of textile effluents by the heterogeneous Fenton process in a continuous packed-bed reactor using Fe/activated carbon as catalyst. Chemical Engineering Journal 232: pp. 34-41 CrossRef
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  14. Garrido-Ramirez, EG, Sivaiah, MV, Barrault, J, Valange, S, Theng, BKG, Ureta-Za?artu, MS, Mora, ML (2012) Catalytic wet peroxide oxidation of phenol over iron or copper oxide-supported allophane clay materials: Influence of catalyst SiO2/Al2O3 ratio. Microporous and Mesoporous Materials 162: pp. 189-198 CrossRef
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• 刊物类别：Earth and Environmental Science
• 刊物主题：Environment
  Environment
  Atmospheric Protection, Air Quality Control and Air Pollution
  Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollution
  Terrestrial Pollution
  Hydrogeology
  
• 出版者：Springer Netherlands
• ISSN：1573-2932

文摘

Fe2O3/γ-Al2O3 catalysts were prepared using the wet impregnation method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and nitrogen adsorption–desorption. The continuous catalytic wet hydrogen peroxide oxidation of an aqueous phenol solution over Fe2O3/γ-Al2O3 was studied in a fixed-bed reactor. The effects of several factors, such as the weight hourly space velocity (WHSV), particle size, reaction temperature, H2O2 concentration, and initial pH, were studied to optimize the operation conditions for phenol mineralization. For a 1?g?L? phenolic aqueous solution, the phenol was nearly completely removed and chemical oxygen demand (COD) removal was approximately 92?% at steady-state conditions with a WHSV of 2.4?×-0??gPhOH?h??gcat ? at 80?°C with 5.1?g?L? H2O2. The long-term stability of the Fe2O3/γ-Al2O3 catalyst was also investigated for the continuous treatment of phenolic water. The removal of phenol and COD exhibited a slowly decreasing trend, which was primarily due to the complexation of active sites with acid organic compounds and the adsorption of intermediate products. The deposition of organic carbon and Fe leached from the catalyst had a small role in the partial deactivation of the catalyst. The Fe leached from the catalyst partially contributed to the phenol removal during a short run. However, this contribution could be neglected after 36?h because the Fe leached from the catalyst decreased to approximately 5?mg?L?.