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Amidoximated graphene/konjac glucomannan composite gel for uranium extraction from saline lake brine

文献类型：期刊论文

作者Jia, Zimeng1,2; Cui, Yunfei1,2,3; Chu, Jian1,2; Huang, Qinggang1; Wang, Jieru1,2,3; Tian, Wei1; Wu, Xiaolei1; Qin, Zhi1; Bai, Jing1
刊名ENVIRONMENTAL TECHNOLOGY & INNOVATION
出版日期2022-02-01
卷号25页码:9
ISSN号2352-1864
关键词Uranium Sorption Konjac glucomannan Composite gel Mechanism
DOI10.1016/j.eti.2021.102214
通讯作者Qin, Zhi(qinzhi@impcas.ac.cn) ; Bai, Jing(baijing@impcas.ac.cn)
英文摘要To overcome the separation defect of amidoximated graphene oxide (rGO-PAO) in uranium sorption from water solutions, the renewable natural polymer material konjac glucomannan (KGM) is selected as the immobilization reagent, since KGM can easily form gel structure and very cheap. A rationally designed strategy is developed to synthesize the new composite gel sorbent denoted as rGO-PAO/KGM. The acquired sorbents are characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and BET specific surface area analyses. All the results prove that rGO-PAO is successfully immobilized by KGM and composite gels with three dimensional (3D) sponge-like architectures are obtained. Batch uranium sorption experiments are conducted and the effects of initial solution pH, ion strength, time, uranium concentration and coexisting ions on uranium sorption are investigated. Blank KGM is found to have low uranium sorption capacity and most of uranium ions are sorbed by rGO-PAO. The maximum experimental sorption capacities are determined to be 52.6 +/- 0.5 mg/g for 20-rGO-PAO/KGM. Furthermore, the sorption mechanism of uranium by rGO-PAO/KGM are revealed by using different analytical methods. Amidoxime groups are found to play the major role in uranium sorption. Uranium extraction from natural saline lake brine sample by rGO-PAO/KGM is conducted. Although the sorption capacity is not very high, rGO-PAO/KGM can be regarded as potential sorbents for uranium extraction from natural complicated waters, considering some of their superior properties. (C) 2021 The Authors. Published by Elsevier B.V.
WOS关键词EFFICIENT EXTRACTION ; AQUEOUS-SOLUTIONS ; OXIDE ; ADSORPTION ; U(VI) ; CARBON ; IONS ; ADSORBENTS ; ENRICHMENT ; NANOSHEETS
资助项目National Natural Science Foundation of China[U1932142] ; National Natural Science Foundation of China[11575260] ; National Natural Science Foundation of China[12005272] ; National Natural Science Foundation of China[11905266] ; National Natural Science Foundation of China[11505250] ; West Light Foundation of the Chinese Academy of Sciences ; Analytical Center of Institute of Modern Physics, Chinese Academy of Sciences
WOS研究方向Biotechnology & Applied Microbiology ; Engineering ; Environmental Sciences & Ecology
语种英语
出版者ELSEVIER
WOS记录号WOS:000754183300018
资助机构National Natural Science Foundation of China ; West Light Foundation of the Chinese Academy of Sciences ; Analytical Center of Institute of Modern Physics, Chinese Academy of Sciences
源URL[http://119.78.100.186/handle/113462/142017]  
专题中国科学院近代物理研究所
通讯作者Qin, Zhi; Bai, Jing
作者单位1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
2.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China
3.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Jia, Zimeng,Cui, Yunfei,Chu, Jian,et al. Amidoximated graphene/konjac glucomannan composite gel for uranium extraction from saline lake brine[J]. ENVIRONMENTAL TECHNOLOGY & INNOVATION,2022,25:9.
APA Jia, Zimeng.,Cui, Yunfei.,Chu, Jian.,Huang, Qinggang.,Wang, Jieru.,...&Bai, Jing.(2022).Amidoximated graphene/konjac glucomannan composite gel for uranium extraction from saline lake brine.ENVIRONMENTAL TECHNOLOGY & INNOVATION,25,9.
MLA Jia, Zimeng,et al."Amidoximated graphene/konjac glucomannan composite gel for uranium extraction from saline lake brine".ENVIRONMENTAL TECHNOLOGY & INNOVATION 25(2022):9.

入库方式： OAI收割

来源：近代物理研究所

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