A simple approach to fabricate granular adsorbent for adsorption of rare elements

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 环境材料与生态化学研究发展中心

	A simple approach to fabricate granular adsorbent for adsorption of rare elements
	Zhu YF(朱永峰)1,2 ; Zheng YA(郑易安)1 ; Wang AQ(王爱勤)1 ; Wang AQ(王爱勤)
刊名	International Journal of Biological Macromolecules
	2015
卷号	72 页码:410-420
关键词	Granular hybrid hydrogel Hydroxypropyl cellulose Attapulgite Adsorption Rare earth
ISSN号	0141-8130
通讯作者	王爱勤
英文摘要	A kind of granular hybrid hydrogel was prepared under an ambient temperature in air atmosphere using Fenton reagent as the redox initiator, and its three-dimensional structured polymeric network can be formed by the grafting reaction of acrylic acid (AA) onto hydroxypropyl cellulose (HPC) with attapulgite (APT) as the inorganic component. The resulting granular hybrid hydrogel was marked as HPC-g-PAA/APT and used as the adsorbent to remove the rare earth elements, La(III) and Ce(III). The effects of pH and APT content on the adsorption capacity, as well as the adsorption isotherms and kinetics, were systematically investigated. Finally, the reusability of HPC-g-PAA/APT for La(III) and Ce(III) were evaluated. The results indicate that the adsorption process is pH-independent at pH ≥ 4.0 and can be described using the pseudo-second-order kinetic model. The equilibrium isotherm matches well with the Langmuir model. The adsorbed La(III) and Ce(III) can be desorbed by 0.5 mol/L HCl, with the desorption percentage of 80% for La(III) and Ce(III). After five adsorption–desorption cycles, the adsorption capacity shows a slight decrease (about 15%), implying that the granular hybrid hydrogel can be used as an effective adsorbent for the removal and recovery of La(III) and Ce(III) from aqueous solution.
学科主题	环境材料与生态化学
收录类别	SCI
资助信息	the National Natural Science Foundation of China (21107116;21377135;21477135);Science and Technology Achievement Transformation Foundation of Jiangsu Province (BA2011100);“863” Project of the Ministry of Science and Technology, China (2013AA032000)
语种	英语
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/18853]
专题	兰州化学物理研究所_环境材料与生态化学研究发展中心
通讯作者	Wang AQ(王爱勤)
作者单位	1.Center of Xuyi Attapulgite Applied Technology, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China 2.University of Chinese Academy of Sciences, Beijing 100049, PR China
推荐引用方式 GB/T 7714	Zhu YF,Zheng YA,Wang AQ,et al. A simple approach to fabricate granular adsorbent for adsorption of rare elements[J]. International Journal of Biological Macromolecules,2015,72:410-420.
APA	Zhu YF,Zheng YA,Wang AQ,&王爱勤.(2015).A simple approach to fabricate granular adsorbent for adsorption of rare elements.International Journal of Biological Macromolecules,72,410-420.
MLA	Zhu YF,et al."A simple approach to fabricate granular adsorbent for adsorption of rare elements".International Journal of Biological Macromolecules 72(2015):410-420.