alexa Adsorption and hydraulic conductivity of landfill-leachate perfluorinated compounds in bentonite barrier mixtures.
Environmental Sciences

Environmental Sciences

International Journal of Waste Resources

Author(s): Li B, Li LY, Grace JR

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Abstract Perfluorinated compounds (PFCs) are leached in landfills from a wide range of domestic and industrial products. Sodium bentonite, a common barrier material, was contacted with water and landfill leachate spiked with PFCs in batch adsorption tests to measure PFC adsorption. Leaching cell tests were also conducted in which water, landfill leachate and PFC-spiked leachate permeated through compacted sand-bentonite mixtures. It was found that the PFCs did not bind substantially to the bentonite. Hydraulic conductivities were not appreciably affected by the PFCs, showing that bentonite liners are not affected for the range of concentrations tested. The sand-bentonite mixture partially retained the PFCs, indicating limited effectiveness in containing PFC within landfills. Copyright © 2015 Elsevier Ltd. All rights reserved. This article was published in J Environ Manage and referenced in International Journal of Waste Resources

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