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Article: Facile synthesis of nanofiltration membrane with asymmetric selectivity towards enhanced water recovery for groundwater remediation

TitleFacile synthesis of nanofiltration membrane with asymmetric selectivity towards enhanced water recovery for groundwater remediation
Authors
KeywordsAsymmetrical selectivity
Nanofiltration
Polyamide membranes
Promoted interfacial polymerization
Scaling resistance
Issue Date3-Oct-2022
PublisherElsevier
Citation
Journal of Membrane Science, 2022, v. 663 How to Cite?
Abstract

Groundwater remediation by nanofiltration (NF) membrane is still hindered by low water recovery due to membrane scaling. In this study, a simple NaOH-promoted interfacial polymerization strategy was proposed to tailor the membrane asymmetric selectivity of calcium over sulfate ions to reduce scaling potential towards high water recovery. A 0.5 wt% NaOH was introduced during the interfacial polymerization of piperazine (PIP) and trimesoyl chloride on a polysulfone support. The promoted interfacial polymerization reduced polyamide defects for better rejection and enabled the use of lower PIP concentrations. Enhanced hydrolysis of the polyamide layer created a more negatively charged surface with larger pore sizes to achieve asymmetrical selectivity together with enhanced permeance. The water permeance of fabricated TFC-0.1 membrane with the aid of NaOH was 2.1 times that of commercial NF270 membrane, while exhibiting comparable perfluorooctanesulfonic acid rejections (>95%). This membrane also achieved similar to 50% more water recovery than that of NF270 membrane under simulated gypsum scaling condition, owing to the selective passage of calcium (low rejection of 11.4 +/- 0.6%). The exemplified strategy of NaOH-promoted interfacial polymerization is facile and readily scalable, which demonstrated strong potential towards high water recovery in groundwater remediation contaminated by emerging pollutants.


Persistent Identifierhttp://hdl.handle.net/10722/331256
ISSN
2023 Impact Factor: 8.4
2023 SCImago Journal Rankings: 1.848
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYang, WL-
dc.contributor.authorLong, L-
dc.contributor.authorGuo, H-
dc.contributor.authorWu, CY-
dc.contributor.authorZhou, SH-
dc.contributor.authorMei, Y-
dc.contributor.authorPeng, LE-
dc.contributor.authorLiu, WY-
dc.contributor.authorYang, Z-
dc.contributor.authorLi, WB-
dc.contributor.authorTang, CY-
dc.date.accessioned2023-09-21T06:54:06Z-
dc.date.available2023-09-21T06:54:06Z-
dc.date.issued2022-10-03-
dc.identifier.citationJournal of Membrane Science, 2022, v. 663-
dc.identifier.issn0376-7388-
dc.identifier.urihttp://hdl.handle.net/10722/331256-
dc.description.abstract<p>Groundwater remediation by nanofiltration (NF) membrane is still hindered by low water recovery due to membrane scaling. In this study, a simple NaOH-promoted interfacial polymerization strategy was proposed to tailor the membrane asymmetric selectivity of calcium over sulfate ions to reduce scaling potential towards high water recovery. A 0.5 wt% NaOH was introduced during the interfacial polymerization of piperazine (PIP) and trimesoyl chloride on a polysulfone support. The promoted interfacial polymerization reduced polyamide defects for better rejection and enabled the use of lower PIP concentrations. Enhanced hydrolysis of the polyamide layer created a more negatively charged surface with larger pore sizes to achieve asymmetrical selectivity together with enhanced permeance. The water permeance of fabricated TFC-0.1 membrane with the aid of NaOH was 2.1 times that of commercial NF270 membrane, while exhibiting comparable perfluorooctanesulfonic acid rejections (>95%). This membrane also achieved similar to 50% more water recovery than that of NF270 membrane under simulated gypsum scaling condition, owing to the selective passage of calcium (low rejection of 11.4 +/- 0.6%). The exemplified strategy of NaOH-promoted interfacial polymerization is facile and readily scalable, which demonstrated strong potential towards high water recovery in groundwater remediation contaminated by emerging pollutants.</p>-
dc.languageeng-
dc.publisherElsevier-
dc.relation.ispartofJournal of Membrane Science-
dc.subjectAsymmetrical selectivity-
dc.subjectNanofiltration-
dc.subjectPolyamide membranes-
dc.subjectPromoted interfacial polymerization-
dc.subjectScaling resistance-
dc.titleFacile synthesis of nanofiltration membrane with asymmetric selectivity towards enhanced water recovery for groundwater remediation-
dc.typeArticle-
dc.identifier.doi10.1016/j.memsci.2022.121038-
dc.identifier.scopuseid_2-s2.0-85139282529-
dc.identifier.volume663-
dc.identifier.eissn1873-3123-
dc.identifier.isiWOS:000928461500005-
dc.publisher.placeAMSTERDAM-
dc.identifier.issnl0376-7388-

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