Sono-chemical treatment of per- and poly-fluoroalkyl compounds in aqueous film-forming foams by use of a large-scale multi-transducer dual-frequency based acoustic reactor.

•Large-scale sonochemical reactor was shown effective for PFAS treatment.•Cavitational yield increased with initial PFAS concentration and lower pH.•Dual frequency increased PFAS degradation and fluoride release.•Large-scale sonochemical treatment requires low energy input.