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Fabrication of a magnetic porous hydrogel sphere for efficient enrichment of Rb+ and Cs+ from aqueous solution
Zhu, Yongfeng1; Zhang, Huifang2; Wang, Wenbo1; Ye, Xiushen2; Wu, Zhijian2; Wang, Aiqin1
2017-09-01
Source PublicationCHEMICAL ENGINEERING RESEARCH & DESIGN
Volume125Pages:214-225
SubtypeArticle
AbstractA series of magnetic porous hydrogel spheres were prepared from the oil in water (O/W) Pickering emulsion stabilized with silicone-modified magnetic attapulgite (MAPT), using hydroxypropyl cellulose (HPC) as the grafting backbone and acrylic acid (AA) as the monomer. The structure, morphologies and physico-chemical features of the Pickering emulsions and the hydrogel spheres were characterized by TEM, SEM, XRD and TGA techniques. The results revealed that the Fe3O4 was attached on the surface of APT with good dispersion, and the magnetic APT (MAPT) was modified successfully with silane. The emulsion with HPC, AA, initiator and crosslinker inside can be directly dropped into hot liquid paraffin to form hydrogel sphere. The rod-like APT as the stabilizer facilitated to form open pore and interconnected pores. The magnetic porous hydrogel sphere can rapidly adsorb the rare elements Rb+ and Cs+, with the maximum adsorption capacities of 232.46 and 239.88 mg/g, respectively. The adsorbed Rb' and Cs' ions can be recovered by a simple desorption process, and the hydrogel sphere also showed excellent reusability after five consecutive adsorption desorption cycles. This porous sphere with excellent adsorption capability and rate is potential adsorbent for the adsorption and enrichment of rare metals Rb+ and Cs+. (C) 2017 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
KeywordPickering Emulsion Attapulgite Porous Hydrogel Sphere Rare Metals Adsorption
WOS HeadingsScience & Technology ; Technology
WOS KeywordINTERNAL PHASE EMULSIONS ; HIGH-PRESSURE HOMOGENIZATION ; METAL-IONS CS ; AMMONIUM MOLYBDOPHOSPHATE ; SELECTIVE SORBENTS ; ADSORPTION ; EXTRACTION ; RUBIDIUM ; HEXACYANOFERRATE ; COMPOSITE
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000411846800020
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Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6255
Collection青海盐湖研究所知识仓储
盐湖资源与化学实验室
Affiliation1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Ctr Ecomat & Green Chem, Key Lab Clay Mineral Appl Res Gansu Prov, Lanzhou 730000, Gansu, Peoples R China
2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Qinghai, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Yongfeng,Zhang, Huifang,Wang, Wenbo,et al. Fabrication of a magnetic porous hydrogel sphere for efficient enrichment of Rb+ and Cs+ from aqueous solution[J]. CHEMICAL ENGINEERING RESEARCH & DESIGN,2017,125:214-225.
APA Zhu, Yongfeng,Zhang, Huifang,Wang, Wenbo,Ye, Xiushen,Wu, Zhijian,&Wang, Aiqin.(2017).Fabrication of a magnetic porous hydrogel sphere for efficient enrichment of Rb+ and Cs+ from aqueous solution.CHEMICAL ENGINEERING RESEARCH & DESIGN,125,214-225.
MLA Zhu, Yongfeng,et al."Fabrication of a magnetic porous hydrogel sphere for efficient enrichment of Rb+ and Cs+ from aqueous solution".CHEMICAL ENGINEERING RESEARCH & DESIGN 125(2017):214-225.
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