Enspired Solutions’ PFAS Reductive Defluorination at Work
In June 2023, we completed a successful field test of PFAS destruction in landfill leachate using our unique photo-activated reductive defluorination (PRD) chemistry at a site in Michigan. In the time-series graph below, you can observe the following outcomes:
- Initial concentrations of each PFAS decreased over the duration of the experiment by up to 2 orders of magnitude.
- Degradation occurred in a complex matrix (landfill leachate) over a wide range of PFAS compounds, including long-chains, short-chains, fluorotelomers, and perfluoroalkane sulfonamide acetic acids.
- Extremely rapid degradation occurred for PFOS and other perfluorosulfonic acid (PFSA) compounds.
- Intermediate increases in perfluorinated carboxylic acid concentrations over time illustrate the systematic disassembly of the PFAS carbon chain one C-F group at a time. Those intermediate increases in PFAS concentrations subsequently decrease as the shorter chains are also disassembled.
- Reaction duration can be adjusted to achieve site-specific remediation targets while maximizing energy efficiency.
Notes: *Analytical interference, no results reported; Empty bars indicate non-detect; Compounds analyzed for but not detected at any sampling point include PFDS, PFNS, 11Cl-PF3Ouds, HFPO-DA (GenX), ADONA.