Sustainable and Low-cost PFAS Source Treatment

This case study reviews the in situ treatment of PFAS source zones at firefighting training areas on two aviation sites where PFAS-containing AFFF was historically discharged. Pilot tests at both sites demonstrated PFAS soil leachate concentrations has been reduced by >99% following the source zone treatments.

The PFAS source treatments applied site-specific amendment blends of SourceStop, a new concentrated form of colloidal activated carbon, in conjunction with powdered activated carbon. SourceStop is a micron scale aqueous carbon suspension emplaced as a horizontal PFAS barrier at the base of the target treatment zones to improve remediation effectiveness dramatically. In controlled laboratory studies, SourceStop has been proven to prevent PFAS leaching with >10x more effectiveness than powdered activated carbon alone.