Electroreductive and Regenerative System

An electroreductive and regenerative system includes an electrochemical reduction reactor having a housing and a reactor inlet. A cathode and an anode are disposed at least partially within a fluid flow-path. A spent ion-exchange resin slurry delivery inlet is fluidly connected to the reactor inlet. The spent ion-exchange resin slurry delivery inlet is connected to a source of spent ion-exchange slurry. A method of concurrently electroreductively remediating poly- and perfluorinated alkyl substances (PFAS) and regenerating an ion-exchange resin material includes providing an electrolyte-containing spent ion-exchange resin slurry, the spent ion-exchange resin slurry comprising a plurality of PFAS molecules immobilized on a surface of an ion-exchange resin material in the electrolyte containing spent ion-exchange resin slurry, and directing the electrolyte-containing, spent ion-exchange resin slurry through an electrochemical reduction reactor to remediate PFAS and form regenerated ion-exchange resin material in a regenerated ion-exchange material slurry.