High Performance Nanofiltration Membrane for Effective Removal of Perfluoroalkyl Substances at High Water Recovery.

Boo, C; Wang, Y; Zucker, I; Choo, Y; Osuji, CO; Elimelech, M

High Performance Nanofiltration Membrane for Effective Removal of Perfluoroalkyl Substances at High Water Recovery.

Boo, C Wang, Y Zucker, I Choo, Y

Osuji, CO Elimelech, M

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Publisher:: AMER CHEMICAL SOC
Publication Type:: Journal Article
Citation:: Environ Sci Technol, 2018, 52, (13), pp. 7279-7288
Issue Date:: 2018-07-03

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Field	Value	Language
dc.contributor.author	Boo, C
dc.contributor.author	Wang, Y
dc.contributor.author	Zucker, I
dc.contributor.author	Choo, Y https://orcid.org/0000-0003-2715-0618
dc.contributor.author	Osuji, CO
dc.contributor.author	Elimelech, M
dc.date.accessioned	2022-09-08T01:17:36Z
dc.date.available	2022-09-08T01:17:36Z
dc.date.issued	2018-07-03
dc.identifier.citation	Environ Sci Technol, 2018, 52, (13), pp. 7279-7288
dc.identifier.issn	0013-936X
dc.identifier.issn	1520-5851
dc.identifier.uri	http://hdl.handle.net/10453/161504
dc.description.abstract	We demonstrate the fabrication of a loose, negatively charged nanofiltration (NF) membrane with tailored selectivity for the removal of perfluoroalkyl substances with reduced scaling potential. A selective polyamide layer was fabricated on top of a poly(ether sulfone) support via interfacial polymerization of trimesoyl chloride and a mixture of piperazine and bipiperidine. Incorporating high molecular weight bipiperidine during the interfacial polymerization enables the formation of a loose, nanoporous selective layer structure. The fabricated NF membrane possessed a negative surface charge and had a pore diameter of ∼1.2 nm, much larger than a widely used commercial NF membrane (i.e., NF270 with pore diameter of ∼0.8 nm). We evaluated the performance of the fabricated NF membrane for the rejection of different salts (i.e., NaCl, CaCl2, and Na2SO4) and perfluorooctanoic acid (PFOA). The fabricated NF membrane exhibited a high retention of PFOA (∼90%) while allowing high passage of scale-forming cations (i.e., calcium). We further performed gypsum scaling experiments to demonstrate lower scaling potential of the fabricated loose porous NF membrane compared to NF membranes having a dense selective layer under solution conditions simulating high water recovery. Our results demonstrate that properly designed NF membranes are a critical component of a high recovery NF system, which provide an efficient and sustainable solution for remediation of groundwater contaminated with perfluoroalkyl substances.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	AMER CHEMICAL SOC
dc.relation.ispartof	Environ Sci Technol
dc.relation.isbasedon	10.1021/acs.est.8b01040
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Environmental Sciences
dc.subject.mesh	Fluorocarbons
dc.subject.mesh	Membranes, Artificial
dc.subject.mesh	Nylons
dc.subject.mesh	Polymerization
dc.subject.mesh	Water
dc.subject.mesh	Water
dc.subject.mesh	Fluorocarbons
dc.subject.mesh	Nylons
dc.subject.mesh	Membranes, Artificial
dc.subject.mesh	Polymerization
dc.title	High Performance Nanofiltration Membrane for Effective Removal of Perfluoroalkyl Substances at High Water Recovery.
dc.type	Journal Article
utslib.citation.volume	52
utslib.location.activity	United States
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2022-09-08T01:17:32Z
pubs.issue	13
pubs.publication-status	Published
pubs.volume	52
utslib.citation.issue	13

Abstract:

We demonstrate the fabrication of a loose, negatively charged nanofiltration (NF) membrane with tailored selectivity for the removal of perfluoroalkyl substances with reduced scaling potential. A selective polyamide layer was fabricated on top of a poly(ether sulfone) support via interfacial polymerization of trimesoyl chloride and a mixture of piperazine and bipiperidine. Incorporating high molecular weight bipiperidine during the interfacial polymerization enables the formation of a loose, nanoporous selective layer structure. The fabricated NF membrane possessed a negative surface charge and had a pore diameter of ∼1.2 nm, much larger than a widely used commercial NF membrane (i.e., NF270 with pore diameter of ∼0.8 nm). We evaluated the performance of the fabricated NF membrane for the rejection of different salts (i.e., NaCl, CaCl2, and Na2SO4) and perfluorooctanoic acid (PFOA). The fabricated NF membrane exhibited a high retention of PFOA (∼90%) while allowing high passage of scale-forming cations (i.e., calcium). We further performed gypsum scaling experiments to demonstrate lower scaling potential of the fabricated loose porous NF membrane compared to NF membranes having a dense selective layer under solution conditions simulating high water recovery. Our results demonstrate that properly designed NF membranes are a critical component of a high recovery NF system, which provide an efficient and sustainable solution for remediation of groundwater contaminated with perfluoroalkyl substances.

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http://hdl.handle.net/10453/161504