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FIELD DEMONSTRATION OF POLYMER STABILIZED ACTIVATED CARBON FOR IN SITU TREATMENT OF PER- AND POLYFLUOROALKYL SUBSTANCES (PFAS)-IMPACTED GROUNDWATER
Hatton, J., P.-F. Yan, C. Liu, S. Jo, J. Popovic, B.L. Rhiner, J. Wong, M. Mitchek, J. Li, W.A. Arnold, M.F. Simcik, and K.D. Pennell.
Journal of Hazardous Materials 499:140292(2025)
Filed Under: Demonstrations
Filed Under: Demonstrations
A field demonstration of a polymer-stabilized activated carbon (colloidal carbon product [CCP]) was conducted using a "push-pull" test, consisting of a "push" phase (CCP injection) and a "pull" phase (withdrawal of treated groundwater), to assess the effectiveness of the treatment technology. A lab-scale aquifer cell experiment using site aquifer materials and simulated groundwater demonstrated 90.9 to > 99.9% removal of all six tested PFAS by CCP injection. For the field-scale test, a total of 1,900-L CCP was injected into a 2.4-meter interval, and 4,750 L of water were extracted from the treated interval, with extractions conducted at 3- and 10-month post-injection. PFAS concentrations were reduced by up to four orders-of-magnitude, from > 50,000 ng/L total PFAS to below individual detection limits in samples collected 10 months post-injection. An economic analysis indicates that the operating costs of the CCP system would be less than half of a comparable P&T system. Findings demonstrate that CCP injection is a practical, efficient, and cost-effective in situ remediation strategy for addressing PFAS-impacted groundwater plumes. https://www.sciencedirect.com/science/article/pii/S0304389425032121/pdfft?md5=d7197e9f98aa8d951affd8edb14ecbb6&pid=1-s2.0-S0304389425032121-main.pdf
Journal of Hazardous Materials 499:140292(2025)
Filed Under: Demonstrations
Filed Under: Demonstrations
A field demonstration of a polymer-stabilized activated carbon (colloidal carbon product [CCP]) was conducted using a "push-pull" test, consisting of a "push" phase (CCP injection) and a "pull" phase (withdrawal of treated groundwater), to assess the effectiveness of the treatment technology. A lab-scale aquifer cell experiment using site aquifer materials and simulated groundwater demonstrated 90.9 to > 99.9% removal of all six tested PFAS by CCP injection. For the field-scale test, a total of 1,900-L CCP was injected into a 2.4-meter interval, and 4,750 L of water were extracted from the treated interval, with extractions conducted at 3- and 10-month post-injection. PFAS concentrations were reduced by up to four orders-of-magnitude, from > 50,000 ng/L total PFAS to below individual detection limits in samples collected 10 months post-injection. An economic analysis indicates that the operating costs of the CCP system would be less than half of a comparable P&T system. Findings demonstrate that CCP injection is a practical, efficient, and cost-effective in situ remediation strategy for addressing PFAS-impacted groundwater plumes. https://www.sciencedirect.com/science/article/pii/S0304389425032121/pdff
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