Foam fractionation of per- and polyfluoroalkyl substances (PFASs) in landfill leachate using different cosurfactants.

Vo, PHN; Buckley, T; Xu, X; Nguyen, TMH; Rudolph, V; Shukla, P

Foam fractionation of per- and polyfluoroalkyl substances (PFASs) in landfill leachate using different cosurfactants.

Vo, PHN Buckley, T Xu, X Nguyen, TMH Rudolph, V Shukla, P

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Publisher:: PERGAMON-ELSEVIER SCIENCE LTD
Publication Type:: Journal Article
Citation:: Chemosphere, 2023, 310, pp. 136869
Issue Date:: 2023-01

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Field	Value	Language
dc.contributor.author	Vo, PHN
dc.contributor.author	Buckley, T
dc.contributor.author	Xu, X
dc.contributor.author	Nguyen, TMH
dc.contributor.author	Rudolph, V
dc.contributor.author	Shukla, P
dc.date.accessioned	2024-03-19T04:43:27Z
dc.date.available	2022-10-10
dc.date.available	2024-03-19T04:43:27Z
dc.date.issued	2023-01
dc.identifier.citation	Chemosphere, 2023, 310, pp. 136869
dc.identifier.issn	0045-6535
dc.identifier.issn	1879-1298
dc.identifier.uri	http://hdl.handle.net/10453/176920
dc.description.abstract	Foam fractionation is one solution to recover per- and polyfluoroalkyl substances (PFASs) from aqueous sources. The separation process is based on the sorption of PFASs to the air-water interface of bubbles. In many practical cases, the PFAS concentration in the polluted liquid is too low to sustain foam formation and requires the support of a cosurfactant not only to act as a collector of PFAS but also to produce and sustain foam for effective separation. However, there is a lack of information regarding the appropriate choice of cosurfactant and its quantitative effect on the interfacial partitioning of PFASs on the air bubbles. This study is directed to (i) evaluate the effectiveness of four cosurfactants with different-charged headgroups (i.e., anionic, cationic, zwitterionic and nonionic) for foam fractionation of PFASs, and (ii) estimate the air-water interfacial partitioning (Ki) of PFASs in the presence of four different types of cosurfactants. The Ki values span over 4 orders of magnitude with good correlation with PFASs molar volume. All of the cosurfactants were effective for the removal of the long chain PFASs (1.2-4 logs). The cationic and zwitterionic surfactants have oppositely charged head groups with respect to the anionic PFASs and therefore facilitate increased separation due to charge interactions. Some short chain PFASs (e.g., Perfluorobutanesulfonic acid (PFBS), Perfluoropentanesulfonic acid (PFPeS)) can be effectively removed using cationic and zwitterionic cosurfactants.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	PERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartof	Chemosphere
dc.relation.isbasedon	10.1016/j.chemosphere.2022.136869
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Environmental Sciences
dc.subject.classification	Meteorology & Atmospheric Sciences
dc.subject.mesh	Water Pollutants, Chemical
dc.subject.mesh	Fluorocarbons
dc.subject.mesh	Surface-Active Agents
dc.subject.mesh	Water
dc.subject.mesh	Water
dc.subject.mesh	Fluorocarbons
dc.subject.mesh	Surface-Active Agents
dc.subject.mesh	Water Pollutants, Chemical
dc.subject.mesh	Water Pollutants, Chemical
dc.subject.mesh	Fluorocarbons
dc.subject.mesh	Surface-Active Agents
dc.subject.mesh	Water
dc.title	Foam fractionation of per- and polyfluoroalkyl substances (PFASs) in landfill leachate using different cosurfactants.
dc.type	Journal Article
utslib.citation.volume	310
utslib.location.activity	England
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Science
pubs.organisational-group	University of Technology Sydney/Strength - C3 - Climate Change Cluster
utslib.copyright.status	closed_access	*
dc.date.updated	2024-03-19T04:43:23Z
pubs.publication-status	Published
pubs.volume	310

Abstract:

Foam fractionation is one solution to recover per- and polyfluoroalkyl substances (PFASs) from aqueous sources. The separation process is based on the sorption of PFASs to the air-water interface of bubbles. In many practical cases, the PFAS concentration in the polluted liquid is too low to sustain foam formation and requires the support of a cosurfactant not only to act as a collector of PFAS but also to produce and sustain foam for effective separation. However, there is a lack of information regarding the appropriate choice of cosurfactant and its quantitative effect on the interfacial partitioning of PFASs on the air bubbles. This study is directed to (i) evaluate the effectiveness of four cosurfactants with different-charged headgroups (i.e., anionic, cationic, zwitterionic and nonionic) for foam fractionation of PFASs, and (ii) estimate the air-water interfacial partitioning (Ki) of PFASs in the presence of four different types of cosurfactants. The Ki values span over 4 orders of magnitude with good correlation with PFASs molar volume. All of the cosurfactants were effective for the removal of the long chain PFASs (1.2-4 logs). The cationic and zwitterionic surfactants have oppositely charged head groups with respect to the anionic PFASs and therefore facilitate increased separation due to charge interactions. Some short chain PFASs (e.g., Perfluorobutanesulfonic acid (PFBS), Perfluoropentanesulfonic acid (PFPeS)) can be effectively removed using cationic and zwitterionic cosurfactants.

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http://hdl.handle.net/10453/176920