Effectively immobilizing PFAS within an AFFF source zone using colloidal activated carbon
Pilot study demonstrates treating PFAS with CAC at the air-water interface eliminates PFAS mass flux into groundwater — halting further plume development.
In Situ Remediation Services Ltd. (IRSL), a leading environmental remediation company based in Canada, has recently completed a pilot study, demonstrating how PFAS are effectively treated in the capillary fringe of an AFFF source zone by in situ injection using Colloidal Activated Carbon (CAC). The approach offers a means to improve efficiency, while reducing the cost to remediate PFAS-contaminated sites.
Treating PFAS in groundwater presents formidable challenges, with few remedial options that have documented success. Remediation approaches that are effective for other organic contaminants, including bioremediation and chemical oxidation, are ineffective against PFAS due to their carbon-fluorine bond strength.