Description
PFAS-laden spent GAC from water treatment is often disposed of in landfills, where PFAS can leach into leachate, creating potential environmental risks. To address the lack of systematic data, EREF supported testing using three standard leaching protocols to simulate landfill conditions and quantify PFOA and PFOS release from four commercial GAC types. The study found low but measurable PFAS leaching, with PFOA leaching more readily than PFOS, particularly under alkaline conditions. GAC characteristics such as oxygen content and fine particle formation affected the extent of PFAS release. These findings assist landfill operators and policymakers in assessing PFAS risks associated with spent GAC disposal, informing safer and more sustainable management practices.
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