Effective removal of arsenic from an aqueous solution by ferrihydrite/goethite graphene oxide composites using the modified Hummers method

被引：31
|
作者：
Vazquez-Jaime, M. [1 ]
Arcibar-Orozco, J. A. [2 ]
Damian-Ascencio, C. E. [3 ]
Saldana-Robles, A. L. [4 ]
Martinez-Rosales, M. [5 ]
Saldana-Robles, A. [4 ]
Cano-Andrade, S. [3 ]
机构：
[1] Univ Guanajuato, Grad Program Biosci, Irapuato 36500, Gto, Mexico
[2] CIATEC AC, Ctr Innovac Aplicada Tecnoloia Competit, Omega 201, Leon 37545, Gto, Mexico
[3] Univ Guanajuato, Dept Mech Engn, Salamanca 36885, Gto, Mexico
[4] Univ Guanajuato, Dept Agr Mech Engn, Irapuato 36500, Gto, Mexico
[5] Univ Guanajuato, Dept Chem Engn, Guanajuato 36050, Gto, Mexico
来源：
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2020年 / 8卷 / 06期
关键词：
Graphene oxide; Goethite; Ferrihydrite; Arsenic removal; Modified Hummers method; RESPONSE-SURFACE METHODOLOGY; IRON-OXIDE; OXIDATION-COAGULATION; ADSORPTIVE REMOVAL; EFFICIENT REMOVAL; WATER; GROUNDWATER; PERFORMANCE; ADSORBENTS; TEMPLATE;
D O I：
10.1016/j.jece.2020.104416
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This work presents the synthesis of graphene oxide and modified graphene oxide by adding oxygenated groups, using the modified Hummers method. The synthetized materials are characterized by Fourier-transform infrared spectroscopy, X-ray, isotherm adsorption curves, and kinetic adsorption tests. In addition, two varieties of ferric hydroxides, i.e., goethite and ferrihydrite, are coupled to the graphene oxide and the modified graphene oxide, and their arsenic adsorption properties are studied. Results show that the modified composites have a deviation from the linear van't Hoff equation, suggesting that multiple interactions and a multi-layer adsorption are occurring. Also, the results show that composites of graphene oxide/or modified graphene oxide with goethite have a better adsorption capacity than those coupled to ferrihydrite.
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页数：12
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