Scientists develop new techniques to degrade PFAS chemicals

Researchers at the Helmholtz‑Zentrum Dresden‑Rossendorf (HZDR) have announced two novel methods for degrading per‑ and polyfluoroalkyl substances (PFAS), a class of industrial chemicals notorious for their chemical stability and persistence in the environment. The first method employs hydrodynamic cavitation, while the second combines cold atmospheric plasma with gas dispersion. Both techniques were detailed in separate peer‑reviewed publications, with the cavitation study appearing in *Chemical Engineering Journal Advances* and the plasma‑gas approach in *Scientific Reports*.

The hydrodynamic cavitation process harnesses rapid pressure fluctuations within a fluid to generate localized high‑temperature and high‑pressure micro‑bubbles that break the strong carbon‑fluorine bonds characteristic of PFAS molecules. In the plasma‑gas method, a low‑temperature plasma is generated in the presence of a dispersed gas stream, producing reactive species that attack PFAS chains. Both studies report significant reductions in PFAS concentrations under laboratory conditions, suggesting potential scalability for industrial wastewater treatment and remediation of contaminated sites.

These findings represent a promising step toward mitigating the environmental impact of PFAS, offering more energy‑efficient and less chemically intensive alternatives to conventional degradation strategies. Continued research will focus on optimizing process parameters and evaluating long‑term performance in real‑world applications.