Electrochemical advanced oxidation of per- and polyfluoroalkyl substances (PFASs): Development, challenges and perspectives

Xu, X; Li, Y; Vo, PHN; Shukla, P; Ge, L; Zhao, CX

Electrochemical advanced oxidation of per- and polyfluoroalkyl substances (PFASs): Development, challenges and perspectives

Xu, X Li, Y Vo, PHN Shukla, P Ge, L Zhao, CX

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Publisher:: ELSEVIER SCIENCE SA
Publication Type:: Journal Article
Citation:: Chemical Engineering Journal, 2024, 500
Issue Date:: 2024-11-15

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Field	Value	Language
dc.contributor.author	Xu, X
dc.contributor.author	Li, Y
dc.contributor.author	Vo, PHN
dc.contributor.author	Shukla, P
dc.contributor.author	Ge, L
dc.contributor.author	Zhao, CX
dc.date.accessioned	2025-01-02T23:58:31Z
dc.date.available	2025-01-02T23:58:31Z
dc.date.issued	2024-11-15
dc.identifier.citation	Chemical Engineering Journal, 2024, 500
dc.identifier.issn	1385-8947
dc.identifier.issn	1873-3212
dc.identifier.uri	http://hdl.handle.net/10453/182870
dc.description.abstract	Perfluoroalkyl and polyfluoroalkyl substances (PFAS) have been globally distributed since 1940, resulting in their widespread existence in natural environments. This is due to the remarkable stability of carbon–fluorine bonds, which are difficult to degrade chemically in a natural setting. PFASs accumulate in the human body through daily consumption of water and food, which can lead to potential health effects such as immune, metabolic, and neurodevelopmental effects. As a result, there is a growing global concern regarding PFAS remediation, given their toxicity and bio-accumulative properties in recent years. Electrochemical advanced oxidation processes (EAOPs) have been developed for the remediation of PFASs and have been applied in wastewater treatment. In these processes, a highly powerful oxidizing agent, hydroxyl radical (([rad])OH), is generated electrochemically in solution, which can oxidize organic contaminants. EAOPs have become an environmentally friendly and effective treatment process for destroying PFASs. However, their slow reaction rate, poor performance stability, high energy consumption, and electrode erosion hinder their commercialization for water treatment. This paper provides a comprehensive overview of state-of-the-art anode materials and their corresponding degradation efficiency of PFASs through electrochemical remediation, along with future recommendations. A worldwide perspective on the fundamentals and experimental setups is provided, examining, and discussing different anode electrodes, as well as the challenges of EAOPs for PFAS remediation.
dc.language	English
dc.publisher	ELSEVIER SCIENCE SA
dc.relation.ispartof	Chemical Engineering Journal
dc.relation.isbasedon	10.1016/j.cej.2024.157222
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0904 Chemical Engineering, 0905 Civil Engineering, 0907 Environmental Engineering
dc.subject.classification	Chemical Engineering
dc.subject.classification	4004 Chemical engineering
dc.subject.classification	4011 Environmental engineering
dc.subject.classification	4016 Materials engineering
dc.title	Electrochemical advanced oxidation of per- and polyfluoroalkyl substances (PFASs): Development, challenges and perspectives
dc.type	Journal Article
utslib.citation.volume	500
utslib.for	0904 Chemical Engineering
utslib.for	0905 Civil Engineering
utslib.for	0907 Environmental Engineering
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Science
pubs.organisational-group	University of Technology Sydney/UTS Groups
pubs.organisational-group	University of Technology Sydney/UTS Groups/Climate Change Cluster Research Strength (C3)
utslib.copyright.status	open_access	*
dc.rights.license	This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0). To view a copy of this license, visit https://creativecommons.org/licenses/by/4.0/
dc.date.updated	2025-01-02T23:58:28Z
pubs.publication-status	Published
pubs.volume	500

Abstract:

Perfluoroalkyl and polyfluoroalkyl substances (PFAS) have been globally distributed since 1940, resulting in their widespread existence in natural environments. This is due to the remarkable stability of carbon–fluorine bonds, which are difficult to degrade chemically in a natural setting. PFASs accumulate in the human body through daily consumption of water and food, which can lead to potential health effects such as immune, metabolic, and neurodevelopmental effects. As a result, there is a growing global concern regarding PFAS remediation, given their toxicity and bio-accumulative properties in recent years. Electrochemical advanced oxidation processes (EAOPs) have been developed for the remediation of PFASs and have been applied in wastewater treatment. In these processes, a highly powerful oxidizing agent, hydroxyl radical (([rad])OH), is generated electrochemically in solution, which can oxidize organic contaminants. EAOPs have become an environmentally friendly and effective treatment process for destroying PFASs. However, their slow reaction rate, poor performance stability, high energy consumption, and electrode erosion hinder their commercialization for water treatment. This paper provides a comprehensive overview of state-of-the-art anode materials and their corresponding degradation efficiency of PFASs through electrochemical remediation, along with future recommendations. A worldwide perspective on the fundamentals and experimental setups is provided, examining, and discussing different anode electrodes, as well as the challenges of EAOPs for PFAS remediation.

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http://hdl.handle.net/10453/182870