- CAC enables in situ PFAS immobilization – Injectable colloidal activated carbon (CAC) increases aquifer sorption capacity, driving PFAS from the dissolved phase to the solid phase and reducing mobility and exposure risk (PFAS Enhanced Retention, PER).
- Proven and growing global application – Since its commercial use (2016), CAC has been applied at increasing scale, with dozens of projects worldwide demonstrating its effectiveness as a practical groundwater remediation approach.
- In situ retention vs. extractive treatment tradeoffs – CAC offers advantages such as lower cost, reduced waste, and avoidance of handling PFAS-containing media, while extractive methods (e.g., pump-and-treat) involve longer timelines, higher resource demands, and potential environmental liabilities.
- Real-world performance insights guide use – Nearly a decade of field data highlights where CAC works best, along with key design considerations, limitations, and lessons learned to optimize treatment effectiveness and long-term outcomes.
In this webinar we were pleased to have special remediation expert speaker Dr. Jeremy Birnstingl, REGENESIS Vice President – Environmental Technology. His presentation discussed in situ colloidal activated carbon (CAC) for PFAS remediation in groundwater, offering key considerations and lessons learned from the first decade of CAC applications.
