title: Adsorption, oxidation, and reduction behavior of arsenic in the removal of aqueous As(III) by mesoporous Fe/Al bimetallic particles.
abstract: In this study, mesoporous iron/aluminum (Fe/Al) bimetallic particles were synthesized and employed for the removal of aqueous As(III). Scanning electron microscopy and energy dispersive spectroscopy (SEM-EDS), Brunauer-Emmett-Teller (BET) analysis method, Vibrating-sample magnetometry (VSM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FTIR) were employed to characterize the Fe/Al bimetals before and after reaction with As(III). The physical properties, compositions, and structures of Fe/Al bimetallic particles as well as the As(III) removal mechanism were investigated. The characterization of the bimetallic particles after the reaction has revealed the removal of As(III) is a complex process including surface adsorption and oxidation, and intraparticle reduction. The good As(III) removal capability and stability of the Fe/Al bimetallic particles exhibited its great potential as an effective and environmental friendly agent for As(III) removal from water.
authors.affiliation: School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, PR China.
authors.forename: Zihang
authors.initials: Z
authors.lastname: Cheng
authors.affiliation: School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, PR China. Electronic address: fufenglian2006@163.com.
authors.forename: Fenglian
authors.initials: F
authors.lastname: Fu
authors.affiliation: Environmental Engineering and Science Program, Department of Biomedical, Chemical and Environmental Engineering (DBCEE), University of Cincinnati, OH, 45221-0012, USA.
authors.forename: Dionysios D
authors.initials: DD
authors.lastname: Dionysiou
authors.affiliation: School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, PR China.
authors.forename: Bing
authors.initials: B
authors.lastname: Tang
mesh_terms: D000327:Adsorption; D001151:Arsenic; D007501:Iron / Q000737:chemistry; D010084:Oxidation-Reduction; D017550:Spectroscopy, Fourier Transform Infrared; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D014874:Water Pollutants, Chemical; D007501:Iron; D001151:Arsenic
keywords: Adsorption; As(III) removal; Fe/Al bimetallic particles; Oxidation; Reduction