Conventional PFAS treatment technologies, including granular activated carbon and ion-exchange resins, are generally less effective at capturing TFA than many longer-chain PFAS compounds.
CorroboratedContext
The study also points to challenges facing water utilities and regulators. Conventional PFAS treatment technologies, including granular activated carbon and ion-exchange resins, are generally less effective at capturing TFA than many longer-chain PFAS compounds. Specialized testing methods are also needed to reliably measure these smaller contaminants.
Evidence
www.canada.ca · supports
The most effective treatment technologies for the removal of PFAS (including PFOS and PFOA) are, alone or combined, granular activated carbon, membrane filtration (reverse osmosis and nanofiltration), and anion exchange (Appleman et al. … Generally speaking, treatment appeared to be less effective with shorter-chain compounds such as PFBS and PFPeA, which were often present in higher concentrations in the treated effluents than in the raw leachate.
naturalrefrigerants.com · context
Researchers at the New Jersey Institute of Technology have found trifluoroacetic acid (TFA) in 86.7% of 113 samples of tap water and bottled beverages collected in New Jersey in what is called the first statewide monitoring study of ultra-short-chain PFAS in the U.S. Out of 70 tap-water samples, TFA, a byproduct of HFO-1234yf and other f-gases, was detected in 91.4%, with concentrations ranging 74 to 1360ng/L, and a mean of 573ng/L.
History
- · Unverified · initial
- · Corroborated · l3_supports