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  • Emerging technologies for PFOS/PFOA degradation: A review

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    Embargoed until: 2024-02-23
    File version
    Accepted Manuscript (AM)
    Author(s)
    Leung, Shui Cheung Edgar
    Shukla, Pradeep
    Chen, Dechao
    Eftekhari, Ehsan
    An, Hongjie
    Zare, Firuz
    Ghasemi, Negareh
    Zhang, Dongke
    Nguyen, Nam-Trung
    Li, Qin
    Griffith University Author(s)
    Li, Qin
    An, Hongjie
    Nguyen, Nam-Trung
    Chen, Dechao
    Year published
    2022
    Metadata
    Show full item record
    Abstract
    Perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) are highly recalcitrant anthropogenic chemicals that are ubiquitously present in the environment and are harmful to humans. Typical water and wastewater treatment processes (coagulation, flocculation, sedimentation, and filtration) are proven to be largely ineffective, while adsorption with granular activated carbon (GAC) has been the chief option to capture them from aqueous sources followed by incineration. However, this process is time-consuming, and produces additional solid waste and air pollution. Treatment methods for PFOS and PFOA generally follow two ...
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    Perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) are highly recalcitrant anthropogenic chemicals that are ubiquitously present in the environment and are harmful to humans. Typical water and wastewater treatment processes (coagulation, flocculation, sedimentation, and filtration) are proven to be largely ineffective, while adsorption with granular activated carbon (GAC) has been the chief option to capture them from aqueous sources followed by incineration. However, this process is time-consuming, and produces additional solid waste and air pollution. Treatment methods for PFOS and PFOA generally follow two routes: (1) removal from source and reduce the risk; (2) degradation. Emerging technologies focusing on degradation are critically reviewed in this contribution. Various processes such as bioremediation, electrocoagulation, foam fractionation, sonolysis, photocatalysis, mechanochemical, electrochemical degradation, beams of electron and plasma have been developed and studied in the past decade to address PFAS crisis. The underlying mechanisms of these PFAS degradation methods have been categorized. Two main challenges have been identified, namely complexity in large scale operation and the release of toxic byproducts. Based on the literature survey, we have provided a strength-weakness-opportunity-threat (SWOT) analysis and quantitative rating on their efficiency, environmental impact and technology readiness.
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    Journal Title
    Science of The Total Environment
    DOI
    https://doi.org/10.1016/j.scitotenv.2022.153669
    Funder(s)
    ARC
    Grant identifier(s)
    IH180100002
    DP200101105
    Copyright Statement
    © 2022 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence (http://creativecommons.org/licenses/by-nc-nd/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
    Subject
    Beams of electron
    Bioremediation
    Electrocoagulation
    Foam fractionation
    Mechanochemical degradation
    Publication URI
    http://hdl.handle.net/10072/412993
    Collection
    • Journal articles

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