High efficient separation of U(VI) and Th(IV) from rare earth elements in strong acidic solution by selective sorption on phenanthroline diamide functionalized graphene oxide | |
Li, Fuhai3; Yang, Zheng3; Weng, Hanqin3; Chen, Geng3; Lin, Mingzhang2,3; Zhao, Chi1 | |
刊名 | CHEMICAL ENGINEERING JOURNAL |
2018-01-15 | |
卷号 | 332期号:无页码:340-350 |
关键词 | Graphene oxide Phenanthroline diamide U(VI) and Th(IV) Rare earth elements Selective sorption |
ISSN号 | 1385-8947 |
DOI | 10.1016/j.cej.2017.09.038 |
英文摘要 | The extraction and separation of uranium (U(VI)) and thorium (Th(IV)) from rare earth elements (REEs) in acidic waste solutions is very important and still challenging. In this paper, a high-efficient sorbent was successfully prepared by functionalization of graphene oxide with phenanthroline diamide (GO-PDA), which exhibited excellent selectivity towards actinides over lanthanides. The sorption behaviors of GO-PDA towards U(VI) and Th (IV) under various conditions were evaluated by batch experiment. Fast sorption kinetics and high sorption capacities were realized for both U(VI) and Th(IV), which reached equilibrium in 60 min. The sorption isotherms of both U(VI) and Th(IV) coincided with Langmuir model, while the maximum sorption capacities of U(VI) (pH = 5.5) and Th(IV) (pH = 4.0) at 298 K were calculated to be 718 and 703 mg/g respectively, which were much higher than most of the previously reported graphene oxide (GO) based sorbents. GO-PDA also possessed significantly enhanced selectivity for U(VI) and Th(IV) over Eu(III), Nd(III) and Sm(III) compared to pristine GO at ultralow low pH (0-2), with separation factors larger than 23 at pH 0. Most importantly, GO-PDA was made into membrane with porous structure, which achieved fast and efficient separation of U(VI) and Th(IV) from Eu (III), Nd(III) and Sm(III) in aqueous solution. This work demonstrates that GO-PDA is a promising sorbent for efficient selective separation of U(VI) and Th(IV) from REEs in strong acidic waste solutions, which is of great value for nuclear waste management and nuclear fuel recycling. |
资助项目 | National Natural Science Foundation of China[21377122] ; China Postdoctoral Science Foundation[2016M592069] ; Anhui Provincial Natural Science Foundation[1708085QA21] ; Fundamental Research Fund for the Central Universities[WK2140000009] |
WOS关键词 | ONE-POT SYNTHESIS ; AQUEOUS-SOLUTIONS ; THEORETICAL CALCULATIONS ; HIGH-PERFORMANCE ; ADSORPTION ; URANIUM ; THORIUM ; EXTRACTION ; NANOSHEETS ; REMOVAL |
WOS研究方向 | Engineering |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE SA |
WOS记录号 | WOS:000414913700039 |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/35766] |
专题 | 合肥物质科学研究院_中国科学院核能安全技术研究所 |
通讯作者 | Weng, Hanqin; Lin, Mingzhang |
作者单位 | 1.Wanhua Chem Grp Co Ltd, Yantai 264006, Peoples R China 2.Chinese Acad Sci, Inst Nucl Energy Safety Technol, Hefei 230031, Anhui, Peoples R China 3.Univ Sci & Technol China, Sch Nucl Sci & Technol, Hefei 230026, Anhui, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Fuhai,Yang, Zheng,Weng, Hanqin,et al. High efficient separation of U(VI) and Th(IV) from rare earth elements in strong acidic solution by selective sorption on phenanthroline diamide functionalized graphene oxide[J]. CHEMICAL ENGINEERING JOURNAL,2018,332(无):340-350. |
APA | Li, Fuhai,Yang, Zheng,Weng, Hanqin,Chen, Geng,Lin, Mingzhang,&Zhao, Chi.(2018).High efficient separation of U(VI) and Th(IV) from rare earth elements in strong acidic solution by selective sorption on phenanthroline diamide functionalized graphene oxide.CHEMICAL ENGINEERING JOURNAL,332(无),340-350. |
MLA | Li, Fuhai,et al."High efficient separation of U(VI) and Th(IV) from rare earth elements in strong acidic solution by selective sorption on phenanthroline diamide functionalized graphene oxide".CHEMICAL ENGINEERING JOURNAL 332.无(2018):340-350. |
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