Patent ID: 7981296

Claim:
A method of filtering a liquid to remove at least one contaminant therefrom, the method comprising: providing a geotextile composite comprising: a pre-filter layer; a post-filter layer; at least two intermediate filter layers disposed between the pre-filter layer and the post-filter layer; at least one fibrous web comprising composite fibers and adsorptive particulates disposed between the at least two intermediate filters, the composite fibers of the fibrous web having a structural component and a thermally-bondable, polymeric component, and the adsorptive particulates being distributed uniformly throughout the fibrous web with the adsorptive particulates being immobilized in the fibrous web by thermally bonding the composite fibers together and thermally bonding the adsorptive particulates to the composite fibers by the thermally-bondable, polymeric component; placing the geotextile in a location where a liquid that contains contaminants therein resides; passing the liquids through the geotextile such that the liquid contacts the adsorptive particulate; and filtering the contaminants from the liquid through contact of the contaminants with the adsorptive particulate.