Abstract: The present disclosure includes systems, devices, and methods for a reactor, such as a sonication reactor, for destruction of Per- and polyfluoroalkyl substances (PFASs). In one aspect of the disclosure, the reactor includes a housing having a base and one or more walls that cooperate to define a chamber and a transducer disposed the chamber. The transducer is configured to generate a plurality of sound waves such that when PFAS solution is disposed within the chamber, the sound waves propagate through the liquid and at least some of the one or more PFAS compounds are pyrolyzed or otherwise degraded. Other aspects and features are also claimed and described.