Project: Removal of adsorbed PFOS from GAC using thermal
Client: Anglian Water
When: March to Sept ‘07
PFOS has a wide range of applications, from fire fighting (foam), hydraulic fluids for aviation and household protection.
Perfluorinated substances have been found to be persistent, bio accumulative and toxic because of their stable chemical structure,
which prevents natural degradation.
in the local environment is of concern for water contamination especially for groundwater sites. The removal of adsorbed PFOS
onto field spent Granular Activated Carbon (GAC) using a laboratory scale regeneration furnace has been evaluated by WatStech
90-95% PFOS removal was achieved via regeneration. WatStech Ltd. has also undertaken a supplementary phase of the evaluation
through the application of batch isotherms to determine adsorption capacities for PFOS, prior to and after regeneration.