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Contribution of NAPLs to the retention and transport of PFAS in porous media

Firefighters using aqueous fire-fighting foam

Sarah Van Glubt, Ph.D., Senior Staff Environmental Engineer at Hart Crowser, a division of Haley & Aldrich, has co-authored an article with Mark L. Brusseau of the University of Arizona for the American Chemical Society’s Environmental Science & Technology journal. The article, Contribution of nonaqueous-phase liquids to the retention and transport of per and polyfluoroalkyl substances (PFAS) in porous media, details a study of the co-contamination by PFAS and nonaqueous-phase liquids (NAPLs) at various sites, especially those used for fire training with aqueous film-forming foams (AFFFs).

The study had three main objectives:

  • Delineate the relative significance of specific PFAS-NAPL processes on PFAS retention.
  • Investigate the influence of NAPL properties, saturation, and mass-transfer constraints on PFAS retention.
  • Determine whether PFAS may impact NAPL distribution through mobilization or dissolution.

Learn more about the study’s findings and read the full article on the American Chemical Society website.