Removal of 2,4,6-Trichlorophenol by Iron and Manganese Oxides / Granular Activated Carbon with H₂O₂

Abstract:

Iron and manganese oxides/granular activated carbon composite (GACFM) was prepared via a chemical coprecipitation route, followed by a heat treatment at elevated temperature. The as–prepared GACFM was characterized by X-ray diffraction (XRD) and infrared spectroscopy (FTIR). The main iron and manganese oxides actually present in the composites were mainly composed of Fe3O4 ,Mn3O4 and (FeO)x(MnO)1-x. The adsorption and catalytic properties of GACFM and some conditions effects such as H2O2, pH , temperature and CO32- were studied for the removal of 2,4,6-trichlorophenol (TCP) from aqueous medium. The adsorption of TCP on GACFM obeyed the Freundlich isotherms. When the initial concentration of H2O2 was 0.4mg/L , 5mg/L TCP removal rate was maximum on the GACFM. The treatment of TCP could be carried out at initial pH under 7.0. CO32- can scavenge •OH in solution and decreased TCP removal. In the whole, GACFM was satisfactory absorbent and catalyst for the removal of chlorophenol from water.

• Periodical: Advanced Materials Research (Volumes 154-155)
• Pages: 28-33
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.154-155.28
• Online since: October 2010
• Authors: Zhen Zhong Liu, Hui Ping Deng, Zhan Li Chen
• Keywords: 2,4,6-Trichlorophenol, Catalytic Oxidation, Granular Activated Carbon (GAC)

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