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3857459 
Journal Article 
Efficient electrochemical degradation of poly- and perfluoroalkyl substances (PFASs) from the effluents of an industrial wastewater treatment plant 
Gomez-Ruiz, B; Gomez-Lavin, S; Diban, N; Boiteux, V; Colin, A; Dauchy, X; Urtiaga, Ane 
2017 
Yes 
Chemical Engineering Journal
ISSN: 1385-8947 
322 
196-204 
English 
This paper reports the electrochemical treatment of poly- and perfluoroalkyl substances (PFASs) in the effluent from an industrial wastewater treatment plant (WWTP). While most of the previous research focused on the electrochemical degradation of perfluorooctanoic acid and perfluorooctane sulfonate in model solutions, this work studies the simultaneous removal of 8 PFASs at environmentally relevant concentrations in real industrial emissions, which also contained organic matter and inorganic anions. The overall PFASs content in the WWTP effluent was 1652 mu g/L, which emphasized the need to develop innovative technologies for the management of PFASs emissions. 6:2 fluorotelomer sulfonamide allcylbetaine (6:2 FTAB) and 6:2 fluorotelomer sulfonate (6:2 FTSA) were the major contributors (92% w/w) to the overall PFASs content, that also contained significant amounts of short-chain perfluorocarboxylic acids (PFCAs). Using a boron doped diamond (BDD) anode of 0.0070 m(2), the effluent (2 L) was treated by applying a current density of 50 mA/cm(2) for 10 h, that resulted in 99.7% PFASs removal. The operation at lower current densities (5 and 10 mA/cm2) evidenced the initial degradation of 6:2 fluorotelomers into perfluoroheptanoic and perfluorohexanoic acids, that were later degraded into shorter chain PFCAs. The high TOC removal, >90%, and the fluoride release revealed that PFASs mineralization was effective. These results highlight the potential of the electrochemical technology for the treatment of PFASs contained in industrial wastewaters, which nowadays stands as the main source of this group of persistent pollutants into the environment. (C) 2017 Elsevier B.V. All rights reserved. 
Perfluoroalkyl substances (PFASs); 6:2 Fluorotelomers; Perfluorocarboxylates; Electrochemical oxidation; Boron doped diamond anode (BDD); Industrial wastewater 
PFAS
• FtS 6:2
     Literature Search
          WOS
• FtS 8:2
     Literature Search
          WOS
     Screening Results
          Excluded/Not on Topic
• ^Per- and Polyfluoroalkyl Substances (PFAS)
     PFOA (335-67-1) and PFOS (1763-23-1)
          Literature Search – Adverse outcome pathway (2015-present)
               WOS
     FtS 8:2 (39108-34-4)
          Literature Search
               WOS
     FtS 6:2 (27619-97-2)
          Literature Search
               WOS
• PFOA (335-67-1) and PFOS (1763-23-1)
     Literature Search – Adverse outcome pathway (2015-present)
          WOS
     Screening Results
          Excluded/Not on Topic
     Literature Search Update (2013-2019)
          WOS