Removing Residual PFAS from Internal Surfaces of Firefighting Equipment

Methods for removing PFAS from firefighting equipment in closed-loop systems by heating an effluent to a first temperature, circulating at a first flow rate the effluent heated to the first temperature through equipment containing residual PFAS, wherein the first temperature and the first flow rate enable removal of residual PFAS from an interior of the equipment, and heating the effluent to a second temperature for a period of time, wherein the second temperature and the period of time enable the removed PFAS to be substantially destroyed.