To prevent effectively the transport of heavy metal ions in landfill leachate, adding materials, granular activated carbon （GAC） and acid-activated bentonite capable of strongly adsorbing pollutants to the conventional compacted clay liner is one method that has been tried. The adsorption of Cr（VI） to clay, clay containing 3% or 6% GAC and 3 or 6% acid-activated bentonite were investigated by laboratory batch tests. In order to evaluate the feasibility of liner-soil materials, geotechnical properties, including volumetric swelling, proved c...
