Comparison of the photocatalytic degradability of PFOA, PFOS and GenX using Fe-zeolite in water.
Defluorination
Degradation pathway
Fe-zeolite
Hexafluoropropylene oxide dimer acid
Photocatalysis
Poly- and perfluorinated alkyl substances
Journal
Chemosphere
ISSN: 1879-1298
Titre abrégé: Chemosphere
Pays: England
ID NLM: 0320657
Informations de publication
Date de publication:
Dec 2023
Dec 2023
Historique:
received:
08
08
2023
revised:
26
09
2023
accepted:
30
09
2023
medline:
2
11
2023
pubmed:
7
10
2023
entrez:
6
10
2023
Statut:
ppublish
Résumé
Knowledge on the photocatalytic degradability of the emerging poly- and perfluorinated alkyl substances (PFAS) in water, specifically GenX, is limited. GenX has been detected globally in river water and is considered potentially more toxic than legacy PFAS. In this study, we compared the photocatalytic degradability of GenX with the legacy compounds perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) using Fe-zeolite photocatalysts. After 7 h of irradiation, GenX showed lower removal (79%) and defluorination (33%) as compared to PFOA (100% removal and 69% defluorination) and PFOS (100% removal and 51% defluorination). The quasi-first-order degradation rate of GenX (1.5 h
Identifiants
pubmed: 37802482
pii: S0045-6535(23)02614-0
doi: 10.1016/j.chemosphere.2023.140344
pii:
doi:
Substances chimiques
perfluorooctanoic acid
947VD76D3L
perfluorooctane sulfonic acid
9H2MAI21CL
Zeolites
1318-02-1
Water
059QF0KO0R
Fluorocarbons
0
Alkanesulfonic Acids
0
Caprylates
0
Carbon
7440-44-0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
140344Informations de copyright
Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.