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46 ©2023 ANSYS, Inc. / Confidential PFOA degradation in water with RAP Discharge reactor • Radial Plasma (RAP) Discharge reactor ‐ Transient multiphase plasma PSR • Chemistry ‐ Non-thermal atmospheric Ar plasma ‐ Water-vapor phase equilibrium ‐ Electron adsorption at water interface ‐ H 2 (byproduct) release from water ‐ General water chemistry ‐ PFOA degradation by hydrated electron ▪ Hydrated electrons exist within a thin layer beneath the plasma-water interface (~μm) Ar plasma top-layer water Ar Ar plasma+H 2 O+H 2 PSR