Per- and polyfluoroalkyl substances in soil and sediments: Occurrence, fate, remediation and future outlook.

Ahmed, MB; Johir, MAH; McLaughlan, R; Nguyen, LN; Xu, B; Nghiem, LD

Per- and polyfluoroalkyl substances in soil and sediments: Occurrence, fate, remediation and future outlook.

Ahmed, MB Johir, MAH McLaughlan, R

Nguyen, LN Xu, B

Nghiem, LD

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: The Science of the total environment, 2020, 748, pp. 141251
Issue Date:: 2020-12

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Field	Value	Language
dc.contributor.author	Ahmed, MB
dc.contributor.author	Johir, MAH
dc.contributor.author	McLaughlan, R https://orcid.org/0000-0001-9796-0988
dc.contributor.author	Nguyen, LN
dc.contributor.author	Xu, B https://orcid.org/0000-0003-2854-3392
dc.contributor.author	Nghiem, LD
dc.date.accessioned	2021-03-25T06:47:49Z
dc.date.available	2020-07-24
dc.date.available	2021-03-25T06:47:49Z
dc.date.issued	2020-12
dc.identifier.citation	The Science of the total environment, 2020, 748, pp. 141251
dc.identifier.issn	0048-9697
dc.identifier.issn	1879-1026
dc.identifier.uri	http://hdl.handle.net/10453/147522
dc.description.abstract	Perfluoroalkyl and polyfluoroalkyl substances (PFASs) are contaminants of great concern due to their wide-spread occurrence and persistence in the environments (i.e., in water, soil and sediment) and potential toxicology even at very low concentration. The main focus of this review is on the PFASs in soil and sediments. More specifically, this review systematically examines the occurrence and toxicological effects with associated risks, fate (i.e., PFASs adsorption by soil and sediment, transportation and transformation, and bioaccumulation), and remediation practices of PFASs in soil and sediment. Various models and equations such as fugacity-based multimedia fate and hydrodynamic models are used to study the fate, transport, and transformation of PFASs. Among different remediation practices, sorption is the dominant process for the removal of PFASs from soil and sediments. Results also indicate that PFASs adsorption onto activated carbon decrease with the increase of carbon chain length in the PFASs. The longer-chain PFASs have larger partition coefficient values than shorter-chained PFASs. Sorption of PFASs to soil and sediments are mainly governed by different electrostatic interactions, hydrogen bonds formation, hydrophobic interactions, organic content in soil and sediments, and ligand exchange. Other technology such as thermal treatment might be potential in the removal of PAFSs, but need further study to elucidate a conclusion. Finally, the associated challenges and future outlook have been included.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	ELSEVIER
dc.relation.ispartof	The Science of the total environment
dc.relation.isbasedon	10.1016/j.scitotenv.2020.141251
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Environmental Sciences
dc.title	Per- and polyfluoroalkyl substances in soil and sediments: Occurrence, fate, remediation and future outlook.
dc.type	Journal Article
utslib.citation.volume	748
utslib.location.activity	Netherlands
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
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access	*
dc.date.updated	2021-03-25T06:47:47Z
pubs.publication-status	Published
pubs.volume	748

Abstract:

Perfluoroalkyl and polyfluoroalkyl substances (PFASs) are contaminants of great concern due to their wide-spread occurrence and persistence in the environments (i.e., in water, soil and sediment) and potential toxicology even at very low concentration. The main focus of this review is on the PFASs in soil and sediments. More specifically, this review systematically examines the occurrence and toxicological effects with associated risks, fate (i.e., PFASs adsorption by soil and sediment, transportation and transformation, and bioaccumulation), and remediation practices of PFASs in soil and sediment. Various models and equations such as fugacity-based multimedia fate and hydrodynamic models are used to study the fate, transport, and transformation of PFASs. Among different remediation practices, sorption is the dominant process for the removal of PFASs from soil and sediments. Results also indicate that PFASs adsorption onto activated carbon decrease with the increase of carbon chain length in the PFASs. The longer-chain PFASs have larger partition coefficient values than shorter-chained PFASs. Sorption of PFASs to soil and sediments are mainly governed by different electrostatic interactions, hydrogen bonds formation, hydrophobic interactions, organic content in soil and sediments, and ligand exchange. Other technology such as thermal treatment might be potential in the removal of PAFSs, but need further study to elucidate a conclusion. Finally, the associated challenges and future outlook have been included.

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http://hdl.handle.net/10453/147522