Adsorption properties of Fe3O4/Kaolin magnetic composites for Cu2+

被引：0
|
作者：
Xing M. [1 ]
Lei X. [1 ]
Han D. [1 ]
Xu J. [1 ]
Liu G. [1 ]
Yu T. [1 ]
机构：
[1] Materials and Minerals Institute, Xi'an University of Architecture and Technology, Xi'an
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2019年 / 36卷 / 09期
关键词：
Absorption; Cu[!sup]2+[!/sup; Fe[!sub]3[!/sub]O[!sub]4[!/sub; Kaolin; Oxidative precipitation;
D O I：
10.13801/j.cnki.fhclxb.20181107.001
中图分类号：
学科分类号：
摘要：
To facilitate Kaolin which was used to remove Cu2+ from waste water, the stripped Kaolin was prepared by ball milling and the Fe3O4/Kaolin magnetic composite was prepared by oxidative precipitation method. The morphology and composition of Fe3O4/Kaolin magnetic composite were characterized by laser particle size analyzer, SEM and XRD, respectively. The saturation adsorption capacity and magnetic separation recovery of Cu2+ was tested. It is demonstrated that 3.0 g Fe3O4 is the optimal amount as additive in Fe3O4/Kaolin magnetic composite to achieve improved adsorption ability (17.98 mg/g). The saturation magnetization reaches about 16.19 emu/g by hysteresis loop, which shows excellent magnetic response. In addition, the adsorption data of the Fe3O4/Kaolin magnetic composite were fitted by Langmuir and Freundlich adsorption isotherm. It is found that the adsorption behavior of Fe3O4/Kaolin for Cu2+ is basically consistent with the Langmuir adsorption isotherm model and the Freundlich adsorption isotherm model, indicating both monolayer adsorption and multi-layer adsorption are existed in the adsorption behavior of the Fe3O4/Kaolin magnetic composite for Cu2+. © 2019, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.
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页码：2204 / 2211
页数：7
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