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Article: Novel positively charged metal-coordinated nanofiltration membrane for lithium recovery

TitleNovel positively charged metal-coordinated nanofiltration membrane for lithium recovery
Authors
Keywordslithium recovery
Cu-MPD
nanofiltration
high permeance and high selectivity
pH-responsive
Issue Date2021
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/aamick
Citation
ACS Applied Materials & Interfaces, 2021, v. 13 n. 14, p. 16906-16915 How to Cite?
AbstractNanofiltration (NF) with high water flux and precise separation performance with high Li+/Mg2+ selectivity is ideal for lithium brine recovery. However, conventional polyamide-based commercial NF membranes are ineffective in lithium recovery processes due to their undesired Li+/Mg2+ selectivity. In addition, they are constrained by the water permeance selectivity trade-off, which means that a highly permeable membrane often has lower selectivity. In this study, we developed a novel nonpolyamide NF membrane based on metal-coordinated structure, which exhibits simultaneously improved water permeance and Li+/Mg2+ selectivity. Specifically, the optimized Cu–m-phenylenediamine (MPD) membrane demonstrated a high water permeance of 16.2 ± 2.7 LMH/bar and a high Li+/Mg2+ selectivity of 8.0 ± 1.0, which surpassed the trade-off of permeance selectivity. Meanwhile, the existence of copper in the Cu–MPD membrane further enhanced anti-biofouling property and the metal-coordinated nanofiltration membrane possesses a pH-responsive property. Finally, a transport model based on the Nernst–Planck equations has been developed to fit the water flux and rejection of uncharged solutes to the experiments conducted. The model had a deviation below 2% for all experiments performed and suggested an average pore radius of 1.25 nm with a porosity of 21% for the Cu–MPD membrane. Overall, our study provides an exciting approach for fabricating a nonpolyamide high-performance nanofiltration membrane in the context of lithium recovery.
Persistent Identifierhttp://hdl.handle.net/10722/306144
ISSN
2023 Impact Factor: 8.3
2023 SCImago Journal Rankings: 2.058
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWang, L-
dc.contributor.authorRehman, D-
dc.contributor.authorSun, PF-
dc.contributor.authorDeshmukh, A-
dc.contributor.authorZhang, L-
dc.contributor.authorHan, Q-
dc.contributor.authorYang, Z-
dc.contributor.authorWang, Z-
dc.contributor.authorPark, HD-
dc.contributor.authorLienhard, JH-
dc.contributor.authorTang, CY-
dc.date.accessioned2021-10-20T10:19:25Z-
dc.date.available2021-10-20T10:19:25Z-
dc.date.issued2021-
dc.identifier.citationACS Applied Materials & Interfaces, 2021, v. 13 n. 14, p. 16906-16915-
dc.identifier.issn1944-8244-
dc.identifier.urihttp://hdl.handle.net/10722/306144-
dc.description.abstractNanofiltration (NF) with high water flux and precise separation performance with high Li+/Mg2+ selectivity is ideal for lithium brine recovery. However, conventional polyamide-based commercial NF membranes are ineffective in lithium recovery processes due to their undesired Li+/Mg2+ selectivity. In addition, they are constrained by the water permeance selectivity trade-off, which means that a highly permeable membrane often has lower selectivity. In this study, we developed a novel nonpolyamide NF membrane based on metal-coordinated structure, which exhibits simultaneously improved water permeance and Li+/Mg2+ selectivity. Specifically, the optimized Cu–m-phenylenediamine (MPD) membrane demonstrated a high water permeance of 16.2 ± 2.7 LMH/bar and a high Li+/Mg2+ selectivity of 8.0 ± 1.0, which surpassed the trade-off of permeance selectivity. Meanwhile, the existence of copper in the Cu–MPD membrane further enhanced anti-biofouling property and the metal-coordinated nanofiltration membrane possesses a pH-responsive property. Finally, a transport model based on the Nernst–Planck equations has been developed to fit the water flux and rejection of uncharged solutes to the experiments conducted. The model had a deviation below 2% for all experiments performed and suggested an average pore radius of 1.25 nm with a porosity of 21% for the Cu–MPD membrane. Overall, our study provides an exciting approach for fabricating a nonpolyamide high-performance nanofiltration membrane in the context of lithium recovery.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/aamick-
dc.relation.ispartofACS Applied Materials & Interfaces-
dc.subjectlithium recovery-
dc.subjectCu-MPD-
dc.subjectnanofiltration-
dc.subjecthigh permeance and high selectivity-
dc.subjectpH-responsive-
dc.titleNovel positively charged metal-coordinated nanofiltration membrane for lithium recovery-
dc.typeArticle-
dc.identifier.emailYang, Z: zheyang8@hku.hk-
dc.identifier.emailTang, CY: tangc@hku.hk-
dc.identifier.authorityYang, Z=rp02847-
dc.identifier.authorityTang, CY=rp01765-
dc.description.naturepostprint-
dc.identifier.doi10.1021/acsami.1c02252-
dc.identifier.pmid33798334-
dc.identifier.scopuseid_2-s2.0-85104369600-
dc.identifier.hkuros326742-
dc.identifier.volume13-
dc.identifier.issue14-
dc.identifier.spage16906-
dc.identifier.epage16915-
dc.identifier.isiWOS:000641156600093-
dc.publisher.placeUnited States-

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