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COAGULANT-ENHANCED SORPTION FOR IN SITU REMEDIATION OF PFAS-IMPACTED GROUNDWATER SYSTEMS
Simcik, M., W.A. Arnold, and K. Pennell. SERDP Project ER-2425, 19 pp, 2019

The main objective of this project was to develop a cost-effective, in situ method using commercially available drinking water coagulants as sorption enhancers to sequester PFOS, PFOA, PFNA, PFHxS, PFHpA, and PFBS in groundwater systems to prevent migration to drinking water supplies. The central hypothesis was that the addition of chemical coagulants used in the drinking water industry and other water treatment applications would enhance PFAS sorption to the soil, reducing PFAS mobility in the subsurface over long periods. Results of batch tests using excavated aquifer material indicated that both polydimethylamine diallyldimethyl ammonium chloride and polyamine were successful at increasing the sorption of PFAS for retention by the aquifer material. https://www.serdp-estcp.org/content/download/51375/505520/file/ER-2425%20Executive%20Summary.pdf



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