Evaluation of Ce(III) and Gd(III) adsorption from aqueous solution using CTS-g-(AA-co-SS)/ISC hybrid hydrogel adsorbent | |
Department | 环境材料与生态化学研究发展中心 |
Wang F(王锋); Wang WB(王文波); Zhu YF(朱永峰); Wang AQ(王爱勤); Wang AQ(王爱勤); Wang WB(王文波) | |
The second department | 甘肃省黏土矿物应用研究重点实验室 |
2017 | |
Source Publication | Journal of Rare Earths |
ISSN | 1002-0721 |
Volume | 35Issue:7Pages:697-708 |
Abstract | CTS-g-(AA-co-SS)/ISC hybrid hydrogel adsorbent with crosslinked network structure and superior adsorption performance for rare-earth metal ions was successfully synthesized in aqueous solution by a simple one-step free-radical grafting polymerization reaction among acrylic acid (AA), sodium p-styrenesulfonate (SS) and chitosan (CTS) using illite/smectite clay (ISC) as the inorganic additive. The structure of the as-prepared CTS-g-(AA-co-SS)/ISC hydrogel adsorbent was characterized, and the reaction parameters such as AA/SS molar ratio and ISC content were optimized, and the effects of pH values, initial concentration and contact time on the adsorption performance for Ce(III) and Gd(III) were systematically evaluated. It was found that the maximum adsorption capacities of the hydrogel adsorbent toward Ce(III) and Gd(III) reached 174.05 and 223.79 mg/g, respectively, and the adsorption quickly achieved equilibrium within 15–20 min. The adsorbed Ce(III) and Gd(III) could be easily desorbed for recovery, and the used adsorbent was able to be regenerated for reuse. After five adsorption-desorption cycles, the regenerated adsorbent could still retain the adsorption capacities that were close to the initial value. The adsorption process was well described by pseudo-second-order kinetic mode and the Langmuir isotherm model, and the chemical complexation between ions and –COO– was mainly responsible for the high adsorption capacity. As a whole, the hybrid hydrogel adsorbent was potential to be used for the adsorption and recovery of Ce(III) and Gd(III) from water. |
Keyword | Rare-earth Metals Hybrid Hydrogel Network Structure Adsorption Reuse |
Subject Area | 功能复合材料 |
DOI | 10.1016/S1002-0721(17)60966-9 |
Funding Organization | the National Natural Science Foundation of China (51403221;21377135;U1407114);the “863” Project of the Chinese Ministry of Science and Technology (2013AA032003) |
Indexed By | SCI |
If | 2.429 |
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/362003/21815 |
Collection | 环境材料与生态化学研究发展中心 甘肃省黏土矿物应用研究重点实验室 |
Corresponding Author | Wang AQ(王爱勤); Wang WB(王文波) |
Affiliation | 1.Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2.University of the Chinese Academy of Sciences, Beijing 100049, China 3.Key Laboratory of Clay Mineral Applied Research of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China |
Recommended Citation GB/T 7714 | Wang F,Wang WB,Zhu YF,et al. Evaluation of Ce(III) and Gd(III) adsorption from aqueous solution using CTS-g-(AA-co-SS)/ISC hybrid hydrogel adsorbent[J]. Journal of Rare Earths,2017,35(7):697-708. |
APA | Wang F,Wang WB,Zhu YF,Wang AQ,王爱勤,&王文波.(2017).Evaluation of Ce(III) and Gd(III) adsorption from aqueous solution using CTS-g-(AA-co-SS)/ISC hybrid hydrogel adsorbent.Journal of Rare Earths,35(7),697-708. |
MLA | Wang F,et al."Evaluation of Ce(III) and Gd(III) adsorption from aqueous solution using CTS-g-(AA-co-SS)/ISC hybrid hydrogel adsorbent".Journal of Rare Earths 35.7(2017):697-708. |
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