Thermal Reactivation Process Systems
Calgon Carbon Announces Second Independent Study Validation
Kalin Ned — October 7, 2025Calgon Carbon has published a second independent study validating the effectiveness of its thermal reactivation process for eliminating PFAS contaminants from used granular activated carbon (GAC). The research, which focused on carbon utilized in municipal drinking water systems, reports a destruction efficiency of over 99.9% for these substances, with no detectable byproducts or reformed PFAS found in emissions.
Calgon Carbon's method involves heating the spent carbon to high temperatures to break down the contaminants, restoring the material so it can be reused in water filtration. The company positions this as a sustainable alternative to disposing of spent carbon in landfills, thereby creating a circular solution for water treatment facilities facing new regulatory limits on PFAS.
Calgon Carbon's technology addresses the urgent problem of "forever chemicals" in drinking water.