Fast and high-capacity adsorption of Rb+ and Cs+ onto recyclable magnetic porous spheres | |
Department | 甘肃省黏土矿物应用重点实验室 |
Zhu YF(朱永峰)1; Wang WB(王文波)1; Zhang, Huifang2; Ye, Xiushen2; Wu, Zhijian2; Wang AQ(王爱勤)1; Wang WB(王文波); Wang AQ(王爱勤) | |
The second department | 环境材料与生态化学发展中心 |
2017 | |
Source Publication | Chemical Engineering Journal |
ISSN | 1385-8947 |
Volume | 327Pages:982-991 |
Abstract | A novel recyclable magnetic porous sphere adsorbent is prepared by grafting acrylic acid (AA) onto hydroxypropyl cellulose (HPC) through a Pickering emulsion integrated precipitation polymerization and used for the enrichment of scattered strategic metals Rb+ and Cs+. The modified Fe3O4 nanoparticles can not only stabilize the Pickering emulsion template for forming pores, but also make the adsorbent easy to be separated from solution by magnetic field. The adsorption results indicate that the adsorption of Rb+ and Cs+ by the sphere adsorbent rapidly reaches equilibrium within 15 and 30 min, respectively. The saturated adsorption capacities reach 310 and 448 mg/g for Rb+ and Cs+, respectively, which are better than that reported in most of literatures. Fourier transform infrared spectra (FTIR) and X-ray photoelectron spectroscopy (XPS) analyses confirm that the chemical complexation of –COO− and –OH with Rb+ and Cs+ contribute mainly to the adsorption. In addition, the adsorbent is very easy to be recovered and regenerated, and the adsorption capacity does not decrease significantly even after five consecutive adsorption–desorption cycles, as compared with the initial adsorption capacity. The results of dynamic adsorption experiments show that the flow rate, initial ion concentration and column height have an effect on the adsorption capacities of Rb+ or Cs+. In a word, this recyclable sphere adsorbent is promising to be used for the efficient adsorption and enrichment of rare metals. |
Keyword | Porous Sphere Adsorbent Pickering Emulsion Enrichment Rubidium Cesium Magnetic |
Subject Area | 环境材料与生态化学 |
DOI | 10.1016/j.cej.2017.06.169 |
Funding Organization | the National Natural Science Foundation of China (U1407114;21377135;51403221) |
Indexed By | SCI |
If | 6.216 |
Language | 英语 |
Funding Project | 功能复合材料研究组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/21918 |
Collection | 甘肃省黏土矿物应用研究重点实验室 环境材料与生态化学研究发展中心 |
Corresponding Author | Wang WB(王文波); Wang AQ(王爱勤) |
Affiliation | 1.Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China 2.Key Laboratory of Salt Lake Resources and Chemistry, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, PR China |
Recommended Citation GB/T 7714 | Zhu YF,Wang WB,Zhang, Huifang,et al. Fast and high-capacity adsorption of Rb+ and Cs+ onto recyclable magnetic porous spheres[J]. Chemical Engineering Journal,2017,327:982-991. |
APA | Zhu YF.,Wang WB.,Zhang, Huifang.,Ye, Xiushen.,Wu, Zhijian.,...&王爱勤.(2017).Fast and high-capacity adsorption of Rb+ and Cs+ onto recyclable magnetic porous spheres.Chemical Engineering Journal,327,982-991. |
MLA | Zhu YF,et al."Fast and high-capacity adsorption of Rb+ and Cs+ onto recyclable magnetic porous spheres".Chemical Engineering Journal 327(2017):982-991. |
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