NDLI: Continuous Treatment of Phenol over an Fe$_{2}$O$_{3}$/γ-Al$_{2}$O$

Content Provider	Springer Nature Link
Author	Lu, Minghui Yao, Yue Gao, Lulu Mo, Dongmei Lin, Fang Lu, Shuxiang
Copyright Year	2015
Abstract	Fe$_{2}$O$_{3}$/γ-Al$_{2}$O$_{3}$ 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 Fe$_{2}$O$_{3}$/γ-Al$_{2}$O$_{3}$ was studied in a fixed-bed reactor. The effects of several factors, such as the weight hourly space velocity (WHSV), particle size, reaction temperature, H$_{2}$O$_{2}$ concentration, and initial pH, were studied to optimize the operation conditions for phenol mineralization. For a 1 g L$^{−1}$ 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 × 10$^{−2}$ g$_{PhOH}$ h$^{−1}$ g$_{cat}$ $^{−1}$ at 80 °C with 5.1 g L$^{−1}$ H$_{2}$O$_{2}$. The long-term stability of the Fe$_{2}$O$_{3}$/γ-Al$_{2}$O$_{3}$ 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$^{−1}$.
Starting Page	1
Ending Page	13
Page Count	13
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	226
Issue Number	4
e-ISSN	15732932
Language	English
Publisher	Springer International Publishing
Publisher Date	2015-03-11
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Fe$_{2}$O$_{3}$/γ-Al$_{2}$O$_{3}$ Catalytic oxidation Phenol Hydrogen peroxide Fixed-bed reactor Environment Water Quality/Water Pollution Atmospheric Protection/Air Quality Control/Air Pollution Soil Science & Conservation Hydrogeology Climate Change/Climate Change Impacts
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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