U.S. EPA Contaminated Site Cleanup Information (CLU-IN)

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U.S. EPA Technology Innovation and Field Services Division

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Bless, D., J. McKernan, E. Barth, C. Acheson, M. Mills, M. Johnson, C. Su, D. Cutt, et al.
NEHA 2019 Annual Educational Conference & Exhibition, Nashville, 9-12, July, Nashville, Tennessee, 2019

The overall objective of this laboratory-scale research project was to identify a remediation approach using stabilizing agents capable of immobilizing PFAS in soil from two Superfund sites. The project evaluated both natural and commercially available stabilizing agents, and the potential development of a chemical formulation for a new stabilizing agent. The research involved three steps: 1) conduct laboratory isotherm/partitioning treatability study with up to four identified PFAS stabilizing agent formulations for two site-specific soils; 2) determine and document partitioning coefficients after treatment with the stabilizing agents to identify 'best performing' agents; and 3) conduct EPA's Synthetic Precipitation Leaching Procedure on the 'best performing' agents for the common compounds (PFOA, PFOS, PFBA, PFBS, PFNA, and PFHxS) with potential sorbents such as activated carbon, biochar, and commercial organoclay.

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