Intercalation of small molecules in the selective layer of polyamide nanofiltration membranes facilitates the separation of Mg2+/Li
[Display omitted] •Aminomalononitrile (AMN) was used to enhance Mg2+/Li+ separation of PEI-TMC membrane.•The interaction of AMN with Mg2+/Li+ ions and H2O were explored by Density Functional Theory.•Small-molecule embedded mechanism of permeance enhancement for nanofiltration membrane was proposed....
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| Published in | Chemical engineering journal (Lausanne, Switzerland : 1996) Vol. 487; p. 150659 |
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| Main Authors | , , , , , , , , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
01.05.2024
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| Subjects | |
| Online Access | Get full text |
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| Abstract | [Display omitted]
•Aminomalononitrile (AMN) was used to enhance Mg2+/Li+ separation of PEI-TMC membrane.•The interaction of AMN with Mg2+/Li+ ions and H2O were explored by Density Functional Theory.•Small-molecule embedded mechanism of permeance enhancement for nanofiltration membrane was proposed.
In addressing lithium supply shortages driven by increased energy demand, nanofiltration membrane technology is crucial for recovering lithium from salt lake brines. Overcoming the challenge of achieving high selectivity for Li+ and water permeability in polymer nanofiltration membranes, this study proposes a simple approach using Aminomalononitrile (AMN) intercalation to modify polyamide layers. Density functional theory simulations predict AMN's superior selectivity and enhanced hydrophilicity. Stable intercalation of AMN between polyethyleneimine (PEI) molecules is demonstrated, synergistically enhancing water permeability and Li+ selectivity. The resulting PEI/AMN-TMC membrane exhibits exceptional Li+ selectivity and improved water permeability (13.1 L·m−2·h−1·bar−1), 2.9 times higher than traditional PEI-TMC membranes. Stable performance for over seven days, along with anti-scaling and anti-bacterial properties, underscores its practicality. This investigation sheds light on membrane structure regulation through small-molecule intercalation, offering insights into precise adjustments for enhanced water permeability and ion selectivity. |
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| AbstractList | [Display omitted]
•Aminomalononitrile (AMN) was used to enhance Mg2+/Li+ separation of PEI-TMC membrane.•The interaction of AMN with Mg2+/Li+ ions and H2O were explored by Density Functional Theory.•Small-molecule embedded mechanism of permeance enhancement for nanofiltration membrane was proposed.
In addressing lithium supply shortages driven by increased energy demand, nanofiltration membrane technology is crucial for recovering lithium from salt lake brines. Overcoming the challenge of achieving high selectivity for Li+ and water permeability in polymer nanofiltration membranes, this study proposes a simple approach using Aminomalononitrile (AMN) intercalation to modify polyamide layers. Density functional theory simulations predict AMN's superior selectivity and enhanced hydrophilicity. Stable intercalation of AMN between polyethyleneimine (PEI) molecules is demonstrated, synergistically enhancing water permeability and Li+ selectivity. The resulting PEI/AMN-TMC membrane exhibits exceptional Li+ selectivity and improved water permeability (13.1 L·m−2·h−1·bar−1), 2.9 times higher than traditional PEI-TMC membranes. Stable performance for over seven days, along with anti-scaling and anti-bacterial properties, underscores its practicality. This investigation sheds light on membrane structure regulation through small-molecule intercalation, offering insights into precise adjustments for enhanced water permeability and ion selectivity. |
| ArticleNumber | 150659 |
| Author | Van der Bruggen, Bart Volodine, Alexander Fang, Long Xu, Daliang Dewil, Raf Zhu, Qingjuan Zhang, Xi Jiang, Lei Li, Junwei Gui, Xiahui Gao, Qieyuan Jin, Pengrui Chen, Qin |
| Author_xml | – sequence: 1 givenname: Junwei surname: Li fullname: Li, Junwei organization: Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium – sequence: 2 givenname: Long surname: Fang fullname: Fang, Long organization: State Key Laboratory of Coking Coal Resources Green Exploitation, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China – sequence: 3 givenname: Daliang surname: Xu fullname: Xu, Daliang organization: State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China – sequence: 4 givenname: Xi surname: Zhang fullname: Zhang, Xi organization: Department of Chemical Engineering, KU Leuven, Process and Environmental Technology Lab, J. De Nayerlaan 5, 2860 Sint-Katelijne-Waver, Belgium – sequence: 5 givenname: Lei surname: Jiang fullname: Jiang, Lei organization: Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium – sequence: 6 givenname: Qingjuan orcidid: 0000-0003-4242-1623 surname: Zhu fullname: Zhu, Qingjuan organization: Laboratory of Molecular Cell Biology, Department of Biology, Institute of Botany and Microbiology, KU Leuven, 3001 Leuven, Belgium – sequence: 7 givenname: Qin surname: Chen fullname: Chen, Qin organization: Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium – sequence: 8 givenname: Pengrui surname: Jin fullname: Jin, Pengrui organization: Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium – sequence: 9 givenname: Alexander surname: Volodine fullname: Volodine, Alexander organization: Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium – sequence: 10 givenname: Raf orcidid: 0000-0003-4717-5484 surname: Dewil fullname: Dewil, Raf organization: Department of Chemical Engineering, KU Leuven, Process and Environmental Technology Lab, J. De Nayerlaan 5, 2860 Sint-Katelijne-Waver, Belgium – sequence: 11 givenname: Xiahui surname: Gui fullname: Gui, Xiahui email: guixiahui1985@163.com organization: State Key Laboratory of Coking Coal Resources Green Exploitation, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China – sequence: 12 givenname: Qieyuan orcidid: 0000-0003-0461-8791 surname: Gao fullname: Gao, Qieyuan email: qieyuan.gao@kuleuven.be organization: Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium – sequence: 13 givenname: Bart surname: Van der Bruggen fullname: Van der Bruggen, Bart email: bart.vanderbruggen@kuleuven.be organization: Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium |
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| CitedBy_id | crossref_primary_10_1016_j_memsci_2024_123079 |
| Cites_doi | 10.1016/j.apsusc.2021.152161 10.1016/j.seppur.2023.123223 10.1021/acsami.1c02252 10.1016/j.desal.2020.114522 10.1016/j.memsci.2020.118738 10.1016/j.memsci.2021.120051 10.1016/j.desal.2021.115519 10.1007/s40820-021-00659-7 10.1016/j.memsci.2022.120809 10.1016/j.cej.2020.127144 10.1039/D0EE00477D 10.1016/j.hydromet.2018.01.005 10.1016/j.memsci.2022.121063 10.1016/j.memsci.2020.118202 10.1016/j.memsci.2023.121534 10.1016/j.jhazmat.2022.129010 10.1016/j.seppur.2016.08.006 10.1016/j.memsci.2022.120773 10.1016/j.memsci.2020.118668 10.1039/C8TA12540F 10.1016/j.seppur.2020.117959 10.1016/j.desal.2018.04.029 10.1016/j.memsci.2022.121321 10.1016/j.memsci.2023.121572 10.1016/j.desal.2019.114306 10.1016/j.memsci.2022.120802 10.1139/v65-115 10.1016/j.ensm.2020.02.033 10.1088/0953-8984/21/39/395502 10.1016/j.desal.2018.10.019 10.1021/acsami.2c03650 10.1016/j.jhazmat.2022.129744 |
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| Keywords | Aminomalononitrile (AMN) Nanofiltration Lithium separation Polyamide membrane Positive charge |
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•Aminomalononitrile (AMN) was used to enhance Mg2+/Li+ separation of PEI-TMC membrane.•The interaction of AMN with Mg2+/Li+ ions and H2O were... |
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| SubjectTerms | Aminomalononitrile (AMN) Lithium separation Nanofiltration Polyamide membrane Positive charge |
| Title | Intercalation of small molecules in the selective layer of polyamide nanofiltration membranes facilitates the separation of Mg2+/Li |
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