中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 过程工程研究所
  3. 中国科学院过程工程研究所
Enhancement in Li+/Mg(2+)separation from salt lake brine with PDA-PEI composite nanofiltration membrane

文献类型：期刊论文

作者Ashraf, Muhammad Awais3,4; Wang, Junfeng2,4; Wu, Baichun1; Cui, Penglei4; Xu, Baohua4; Li, Xingchun1
刊名JOURNAL OF APPLIED POLYMER SCIENCE
出版日期2020-07-04
页码11
关键词coatings membranes separation techniques
ISSN号0021-8995
DOI10.1002/app.49549
英文摘要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.
WOS关键词LITHIUM AVAILABILITY ; SURFACE MODIFICATION ; HIGH REJECTION ; SEPARATION ; POLYDOPAMINE ; PERFORMANCE ; RESOURCES ; MAGNESIUM ; REMOVAL ; MICRO
资助项目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研究方向Polymer Science
语种英语
WOS记录号WOS:000545083700001
出版者WILEY
资助机构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
源URL[http://ir.ipe.ac.cn/handle/122111/41383]  
专题中国科学院过程工程研究所
通讯作者Wang, Junfeng; Li, Xingchun
作者单位1.CNPC Res Inst Safety & Environm Technol, State Key Lab Petr Pollut Control, Beijing 102206, Peoples R China
2.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Chem Engn, Beijing, Peoples R China
4.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, CAS Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
推荐引用方式
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.

入库方式： OAI收割

来源：过程工程研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。