Topic Area: 4d. Managing PFAS Regulatory Uncertainty in Response Actions

Formatted Title:

Beyond the Box: Life Cycle Exposure Considerations of Treatment Options for PFAS in Groundwater

Background/Objectives:

As ongoing nationwide drinking water investigations document the extent of US aquifer contamination with per- and polyfluoroalkyl substances (PFAS), the remediation of PFAS-contaminated groundwater is expected to increase in frequency and scale. Many remediation technologies for PFAS in groundwater produce waste containing PFAS. Unintended releases of PFAS to the environment arising directly or indirectly from the handling, transport, disposal, regeneration, or destruction of these wastes may lead to the redistribution of PFAS into additional environmental compartments and to potential human exposure.

Approach/Activities:

This presentation explores demonstrated and potential PFAS release, transport, and human exposure pathways for four contemporary remediation technologies for PFAS in groundwater. Three technologies – granular activated carbon, ion-exchange resins, and foam fractionation – are based on pump-and-treat (P&T). The fourth technology involves direct in situ injection of colloidal activated carbon (CAC) into PFAS-impacted groundwater. Documented release data are taken from published literature.

Linda Hall

Affiliation

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(Group 2, Poster Board #13) Beyond the Box: Life Cycle Exposure Considerations of Treatment Options for PFAS in Groundwater