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Adsorptive removal of phosphate from aqueous solutions using different types of red mud
Tengfei Guo ;   Haiquan Yang ;   Qingyou Liu ;   Hannian Gu ;   Ning Wang ;   Wenbin Yu ;   Yang Dai
2017
发表期刊Water Science & Technology
期号2页码:570-577
摘要

Red mud (RM) is an industrial waste generated during production of alumina from using the Bayer process or the sintering process. Four types of red mud from China were characterized for their diverse chemical and mineral compositions using inductively coupled plasma-atomic emission spectroscopy (ICP-AES), inductively coupled plasma-mass spectrometry (ICP-MS) and X-ray diffraction (XRD). Acid treatment was employed to obtain activated red mud (ARM), posing increased surface areas from 10-28 m(2)/g to 220-350 m(2)/g. RMs and ARMs were used to adsorb phosphate in solution to compare the adsorption capacity. Sample GZ3, a red mud from the sintering process, presented the highest adsorption capacity among the four raw RMs, posing an adsorption capacity of 0.37 mg P/g in the solution of 1 mg P/L with a solid/solution ratio of 0.5 g: 1 L. Whereas, activated GX (AGX), a high iron Bayer red mud from diaspore bauxite, showed the highest adsorption capacity of all the ARMs, with an adsorption capacity of 1.92 mg P/g in the same condition. The dynamic studies indicate that the adsorption mainly followed the pseudo second-order model. The models of Freundlich and Langmuir were used to simulate the sorption equilibrium on GZ3 and AGX. It suggests that the Freundlich model had a better correlation with GZ3 while the Langmuir model fitted well with AGX.

关键词Activated Red Mud Adsorption Capacity Dynamic Model Phosphate Red Mud
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/8795
专题地球内部物质高温高压实验室
作者单位1.Key Laboratory of High-temperature and Highpressure Study of the Earth’s Interior, Institute of Geochemistry Chinese Academy of Sciences, Guiyang 550081, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
4.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
5.Red Star Development Dragon Chemical Industry Co., Ltd., Tongren 554001, China
推荐引用方式
GB/T 7714
Tengfei Guo ; Haiquan Yang ; Qingyou Liu ; Hannian Gu ; Ning Wang ; Wenbin Yu ; Yang Dai. Adsorptive removal of phosphate from aqueous solutions using different types of red mud[J]. Water Science & Technology,2017(2):570-577.
APA Tengfei Guo ; Haiquan Yang ; Qingyou Liu ; Hannian Gu ; Ning Wang ; Wenbin Yu ; Yang Dai.(2017).Adsorptive removal of phosphate from aqueous solutions using different types of red mud.Water Science & Technology(2),570-577.
MLA Tengfei Guo ; Haiquan Yang ; Qingyou Liu ; Hannian Gu ; Ning Wang ; Wenbin Yu ; Yang Dai."Adsorptive removal of phosphate from aqueous solutions using different types of red mud".Water Science & Technology .2(2017):570-577.
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