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| Enhancement in Li+/Mg(2+)separation from salt lake brine with PDA-PEI composite nanofiltration membrane | |
| Ashraf, Muhammad Awais1,2; Wang, Junfeng1,3; Wu, Baichun4; Cui, Penglei1; Xu, Baohua1; Li, Xingchun4 | |
| 2020-07-04 | |
| Source Publication | JOURNAL OF APPLIED POLYMER SCIENCE
 |
| ISSN | 0021-8995 |
| Pages | 11 |
| Abstract | Extraction of lithium from high Mg2+/Li(+)ratio salt lake brine with the nanofiltration (NF) membrane is significantly challenging. Interfacial polymerization was utilized for the facile modification of NF membranes with polydopamine (PDA) and polyethylenimine (PEI) to enhance lithium separation efficiency. Comparing permeability and salts rejection (Li(+)and Mg2+) of three NF membranes before and after PDA/PEI deposition, it was observed that separation efficiency was not only dependent on steric hindrance but also affected by Donnan exclusion mechanism. In the case of NF270 membrane after facile polymerization, due to small pore size distribution and low charge density confirmed by zeta potential measurements, Li(+)permeability was reached about 95% at a flux of 21.33 L center dot m(-2)center dot h(-1). Although with the DK membrane, separation factor SF(Li/Mg)was also increased up to 60 after modification, the pore narrowing effect significantly decreased lithium permeability and flux. Experimental results showed that facile modification not only enhanced stability and hydrophilicity but also reduced the high Mg2+/Li(+)ratio from 30 to 4.1 in single-stage separation. |
| Keyword | coatings membranes separation techniques |
| DOI | 10.1002/app.49549 |
| Language | 英语 |
| WOS Keyword | LITHIUM AVAILABILITY ; SURFACE MODIFICATION ; HIGH REJECTION ; SEPARATION ; POLYDOPAMINE ; PERFORMANCE ; RESOURCES ; MAGNESIUM ; REMOVAL ; MICRO |
| Funding Project | CAS-TWAS President's Fellowship Program ; Fujian Innovation Academy, Chinese Academy of Sciences[FJCXY18040101] ; Innovative Research Group Project of the National Natural Science Foundation of China (CN)[21890762] ; Key Research Program of Frontier Sciences CAS[QYZDY-SSW-JSC011] ; National Natural Science Foundation of China[21978302] ; National Natural Science Foundation of China[21776292] |
| WOS Research Area | Polymer Science |
| WOS Subject | Polymer Science |
| Funding Organization | CAS-TWAS President's Fellowship Program ; Fujian Innovation Academy, Chinese Academy of Sciences ; Innovative Research Group Project of the National Natural Science Foundation of China (CN) ; Key Research Program of Frontier Sciences CAS ; National Natural Science Foundation of China |
| WOS ID | WOS:000545083700001 |
| Publisher | WILEY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/41384 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Wang, Junfeng; Li, Xingchun |
| Affiliation | 1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, CAS Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Chem Engn, Beijing, Peoples R China 3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing, Peoples R China 4.CNPC Res Inst Safety & Environm Technol, State Key Lab Petr Pollut Control, Beijing 102206, Peoples R China |
| Recommended Citation GB/T 7714 | Ashraf, Muhammad Awais,Wang, Junfeng,Wu, Baichun,et al. Enhancement in Li+/Mg(2+)separation from salt lake brine with PDA-PEI composite nanofiltration membrane[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2020:11. |
| APA | Ashraf, Muhammad Awais,Wang, Junfeng,Wu, Baichun,Cui, Penglei,Xu, Baohua,&Li, Xingchun.(2020).Enhancement in Li+/Mg(2+)separation from salt lake brine with PDA-PEI composite nanofiltration membrane.JOURNAL OF APPLIED POLYMER SCIENCE,11. |
| MLA | Ashraf, Muhammad Awais,et al."Enhancement in Li+/Mg(2+)separation from salt lake brine with PDA-PEI composite nanofiltration membrane".JOURNAL OF APPLIED POLYMER SCIENCE (2020):11. |
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