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Effective PFAS degradation by electrochemical oxidation methods-recent progress and requirement
Stockholm University, Faculty of Science, Department of Organic Chemistry.ORCID iD: 0000-0002-4212-9617
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2023 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 321, article id 138109Article in journal (Refereed) Published
Abstract [en]

The presence of per-and poly-fluoroalkyl substances (PFASs) in water is of global concern due to their high stability and toxicity even at very low concentrations. There are several technologies for the remediation of PFASs, but most of them are inadequate either due to limited effectiveness, high cost, or production of a large amount of sludge. Electrochemical oxidation (EO) technology shows great potential for large-scale application in the degradation of PFASs due to its simple procedure, low loading of chemicals, and least amount of waste. Here, we have reviewed the recent progress in EO methods for PFAS degradation, focusing on the last 10 years, to explore an efficient, cost-effective, and environmentally benign remediation technology. The effects of important parameters (e.g., anode material, current density, solution pH, electrolyte, plate distance, and electrical connector type) are summarized and evaluated. Also, the energy consumption, the consequence of different PFASs functional groups, and water matrices are discussed to provide an insight that is pivotal for developing new EO materials and technologies. The proposed degradation pathways of shorter-chain PFAS by-products during EO of PFAS are also discussed.

Place, publisher, year, edition, pages
2023. Vol. 321, article id 138109
Keywords [en]
PFAS degradation, Green technology, Active electrode, Electrochemical properties, Water matrices
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-215941DOI: 10.1016/j.chemosphere.2023.138109ISI: 000943844300001PubMedID: 36787844Scopus ID: 2-s2.0-85148054669OAI: oai:DiVA.org:su-215941DiVA, id: diva2:1746665
Available from: 2023-03-29 Created: 2023-03-29 Last updated: 2025-02-07Bibliographically approved

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Åkermark, BjörnDas, Biswanath

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