PTIO as a redox mediator to enhance organic contaminants oxidation by permanganate.
Bisphenol A
Mechanism
PTIO
Permanganate
Redox mediator
Journal
Water research
ISSN: 1879-2448
Titre abrégé: Water Res
Pays: England
ID NLM: 0105072
Informations de publication
Date de publication:
01 Oct 2023
01 Oct 2023
Historique:
received:
12
07
2023
revised:
13
08
2023
accepted:
17
08
2023
medline:
25
9
2023
pubmed:
27
8
2023
entrez:
26
8
2023
Statut:
ppublish
Résumé
Although permanganate (Mn(VII)) is extensively utilized as a strong oxidizer for the purification of water, the direct reaction rates between some refractory pollutants and Mn(VII) are moderate or relatively low. In this study, we found that 2-phenyl-4,4,5,5-tetramethylimidazoline-3-oxide-1-oxyl (PTIO), could act as a redox mediator to enhance bisphenol A (BPA) degradation by Mn(VII) at pH 5.0 - 9.0, with a removal higher than 80% over 5 min. Moreover, the Mn(VII)/PTIO system is highly efficient toward a broad spectrum of contaminants. Mechanism was elucidated as following: PTIO was oxidized by Mn(VII) to PTIO
Identifiants
pubmed: 37633207
pii: S0043-1354(23)00940-5
doi: 10.1016/j.watres.2023.120500
pii:
doi:
Substances chimiques
permanganic acid
14333-13-2
Oxides
0
Manganese Compounds
0
2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide
18390-00-6
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
120500Informations de copyright
Copyright © 2023 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.