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. Author manuscript; available in PMC: 2023 Mar 14.
Published in final edited form as: Chem Eng J Adv. 2022 Dec 2;13:1–11. doi: 10.1016/j.ceja.2022.100421

Table 3.

Selected subcritical/supercritical treatment technologies for PFAS degradation.

Type of solution Type of PFAS and concentration Qonditions (additives and temperature) Reaction time (hr) Removal (%) Defluorination efficiency (F− %) Ref.
Synthetic PFOS (C0 = 186 ppm) 54 g/L Fe
350 °C		 6 hr >99 % 51.4 % [69]
Synthetic PFOS (C0 = 186 ppm) 62 g/L Zn
350 °C		 6 hr 77 % 18.5 % [69]
Synthetic PFOS (C0 = 186 ppm) 61 g/L Cu
350 °C		 6 hr 15.3 % 6.8 % [69]
Synthetic PFOS (C0 = 186 ppm) 25 g/L A1
350 °C		 6 hr 6.4 % 0.05 % [69]
Synthetic PFOA (C0 = 0.83 ppm) 1008 g/L Nitric Acid
50 °C		 0.67 hr 80 % - [73]
Synthetic PFOS (C0 = 0.83 ppm) 1008 g/L Nitric Acid and 20% Methanol
50 °C		 0.67 hr 55 % - [73]