Removal of adsorbed PFOS from GAC using thermal regeneration
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Project: Removal of adsorbed PFOS from GAC using thermal regeneration

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.

 

PFOS present 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 Ltd.

 

Approximately 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.

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WatStech Ltd. The Technology Centre, Wolverhampton Science Park,
Wolverhampton, WV10 9RU
Company no. 5404280 VAT no. 857 6311 06
 
Tel: 03456 123 820
Fax: 03456 123 821

info@watstech.com

WatStech is working towards ISO 9001 accreditation