Department of Civil Engineering, University of British Columbia, 6250 Applied Science Lane, Vancouver, BC V6T 1Z4, Canada.
Department of Civil Engineering, University of British Columbia, 6250 Applied Science Lane, Vancouver, BC V6T 1Z4, Canada.
J Environ Manage. 2015 Jun 1;156:236-43. doi: 10.1016/j.jenvman.2015.04.003. Epub 2015 Apr 7.
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.
全氟化合物（PFCs）在垃圾填埋场中从各种家庭和工业产品中浸出。膨润土，一种常见的阻隔材料，在批量吸附试验中与水和含有 PFC 的垃圾渗滤液接触，以测量 PFC 的吸附。还进行了渗滤池试验，其中水、垃圾渗滤液和含 PFC 的渗滤液渗透过压实的砂-膨润土混合物。结果表明，PFCs 没有与膨润土大量结合。水力传导率没有受到 PFCs 的显著影响，表明膨润土衬垫在测试的浓度范围内不受影响。砂-膨润土混合物部分保留了 PFCs，表明在限制填埋场内的 PFC 方面效果有限。
