PFAS Encapsulation in Soil Encapsulation of PFAS in soil-This presentation describes the state-of-practice, and demonstrates typical results of the successful use of blended cement products for in-situ solidification/stabilization (S/S) of PFAS in contaminated soil. Typical analytical results indicate two to five orders of magnitude reduction between the concentration of PFAS in the soil and the extraction fluid. Two extraction methods are evaluated. The method describes how PFAS is encapsulated in a matrix formed by mixing the contaminated soil with a modified mineral binder. The solidified monolith can be safely left in-situ. This method eliminates the need for landfilling or other off-site disposal of contaminated soil. Depending on the level of PFAS concentration in the soil, this can be a standalone remediation option or it can be used in conjunction with other engineered controls to allow leaving the soils on-site. The cost savings to current disposal methods can be very significant. This constitutes 100% resource recovery
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