Efficient removal of bisphenol A with activation of peroxydisulfate via electrochemically assisted Fe(III)-nitrilotriacetic acid system under neutral condition.
Bisphenol A
Electroreduction
Fe(III)-NTA complexes
Homogeneous activation
Peroxydisulfate
Journal
Journal of hazardous materials
ISSN: 1873-3336
Titre abrégé: J Hazard Mater
Pays: Netherlands
ID NLM: 9422688
Informations de publication
Date de publication:
05 02 2021
05 02 2021
Historique:
received:
29
02
2020
revised:
10
08
2020
accepted:
29
08
2020
entrez:
3
12
2020
pubmed:
4
12
2020
medline:
4
12
2020
Statut:
ppublish
Résumé
In this work, an innovative electrochemically assisted Fe(III)-nitrilotriacetic acid system for the activation of peroxydisulfate (electro/Fe(III)-NTA/PDS) was proposed for the removal of bisphenol A (BPA) at neutral pH with commercial graphite electrodes. The efficient BPA decay was mainly originated from the continuous activation of PDS by Fe(II) reduced from Fe(III)-NTA complexes at the cathode. Scavenger experiments and electron paramagnetic resonance (EPR) measurements confirmed that the removal of BPA occurred through graphite adsorption, direct electron transfer (DET) and radical oxidation. Sulfate and hydroxyl radicals were primarily responsible for the oxidation of BPA while graphite adsorption and DET played a minor role in BPA removal. The influence of Fe(III) concentration, PDS dosage, input current, NTA to Fe(III) molar ratio as well as coexisting inorganic anions (Cl
Identifiants
pubmed: 33264946
pii: S0304-3894(20)31863-X
doi: 10.1016/j.jhazmat.2020.123874
pii:
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
123874Informations de copyright
Copyright © 2020 Elsevier B.V. All rights reserved.