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ELECTRODIALYTIC PER- AND POLYFLUOROALKYL SUBSTANCES (PFASS) REMOVAL MECHANISM FOR CONTAMINATED SOIL
Sorengard, M., G. Niarchos, P.E. Jensen, and L. Ahrens.
Chemosphere 232:224-231(2019)

An electrodialytic remediation method was tested in a lab-scale experiment over 21 days on PFAS-contaminated soil from a fire-fighter training site at Stockholm Arlanda Airport, Sweden. Of 23 PFASs targeted, electromigration towards the anode was observed for C3-C7 PFCAs and C4, C6, and C8 PFSAs. In contrast, MeFOSA, FOSAA, and EtFOSAA transported towards the cathode. Mass balance calculations determined that ≤20% of the shortest-chained PFASs were extracted from the soil to the anolyte.



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