Scientists at the Helmholtz-Zentrum Dresden-Rossendorf have demonstrated two new methods for destroying per- and polyfluoroalkyl substances, commonly known as PFAS or "forever chemicals." These synthetic compounds contaminate drinking water and accumulate in human tissue because they resist natural degradation and standard water treatment processes.
The research team developed hydrodynamic cavitation and cold atmospheric plasma combined with gas dispersion as decomposition strategies. Hydrodynamic cavitation uses high-velocity fluid flow to create and collapse microscopic bubbles, generating intense local pressure and temperature that breaks apart PFAS molecular bonds. The second approach combines cold atmospheric plasma, which produces reactive chemical species at low temperatures, with gas dispersion to enhance contact between PFAS molecules and the plasma's reactive components.
Both techniques appear in peer-reviewed publications. The hydrodynamic cavitation findings appear in Chemical Engineering Journal Advances, while the plasma method results were published in Scientific Reports. The dual-method approach reflects the complexity of eliminating PFAS contamination, which affects water supplies globally and poses health risks including liver damage, thyroid disease, and immune system suppression.
PFAS production spans decades across multiple industries including manufacturing, food packaging, and firefighting foam. Their carbon-fluorine bonds rank among the strongest in chemistry, explaining both their industrial utility and environmental persistence. Current water treatment relies primarily on activated carbon filtration and ion-exchange resins, which simply concentrate PFAS rather than destroying it, creating disposal challenges.
The HZDR work targets actual destruction rather than transfer. Both methods show promise for treating contaminated water at scale, though significant engineering challenges remain before commercial deployment. Hydrodynamic cavitation requires substantial energy input, while cold plasma systems need optimization for handling real-world water matrices containing competing ions and organic matter.
These findings contribute to growing momentum in PFAS