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PFAS degradation by anodic electrooxidation: Influence of BDD electrode configuration and presence of dissolved organic matter

dc.rights.licenseopenen_US
dc.contributor.authorSALEH, Lama
dc.contributor.authorREMOT, Manon
dc.contributor.authorREMAURY, Quentin Blancart
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorPARDON, Patrick
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorLABADI, Pierre
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBUDZINSKI, Hélène
ORCID: 0000-0003-1028-9154
IDREF: 070478090
dc.contributor.authorCOUTANCEAU, Christophe
dc.contributor.authorCROUÉ, Jean-Philippe
dc.date.accessioned2024-08-27T11:30:02Z
dc.date.available2024-08-27T11:30:02Z
dc.date.issued2024-06-01
dc.identifier.issn1385-8947en_US
dc.identifier.urioai:crossref.org:10.1016/j.cej.2024.151355
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/201316
dc.description.abstractEnPer- and poly-fluoroalkyl substances (PFAS) pose substantial environmental and human health risks. Electrochemical oxidation technology is a promising large-scale solution for PFAS degradation due to its simplicity and minimal waste generation. This study investigated the electrochemical performance of boron-doped diamond (BDD) electrodes in degrading PFAS using a recirculation cell with plate and mesh electrodes. The study found that increasing the current density from 6.4 mA/cm2 to 40 mA/cm2 resulted in a transition of the reaction rate from pseudo-first-order toward zero-order kinetics. The stepwise degradation mechanism and the formation of intermediate products were also explored. Carbon and fluorine molar balance analysis revealed that the missing intermediates do not contain fluoride atoms in their molecular formula. The shape and surface of the electrodes had a significant impact on their performance, in particular, improving the degradation of the most recalcitrant perfluorobutanoic acid. The influence of different fractions of dissolved organic matter (DOM) on perfluorohexanoic acid degradation shows that overall, DOM does not significantly inhibit its degradation. Some inhibition was observed in the presence of DOM enriched in carbohydrates, organics that are known to exert strong interaction properties with organic and inorganic surfaces. The synergistic effect of direct anodic oxidation and indirect degradation by reactive radical species enables the decomposition of both DOM and PFAS. Finally, high removal percentages of short (up to 96 %) and long-chain PFAS (up to 99 %) were obtained using BDD electrooxidation cells combining plate and mesh electrodes when treating reverse osmosis concentrate containing PFAS.
dc.language.isoENen_US
dc.sourcecrossref
dc.title.enPFAS degradation by anodic electrooxidation: Influence of BDD electrode configuration and presence of dissolved organic matter
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.cej.2024.151355en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalChemical Engineering Journalen_US
bordeaux.page151355en_US
bordeaux.volume489en_US
bordeaux.hal.laboratoriesEPOCen_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamLPTCen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcedissemin
dc.rights.ccPas de Licence CCen_US
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