Development of the Desorption Method of Perfluoroalkyl Carboxylic Acids Absorbed on the Porous Carbon Materials by Using Superheated Water

April 5, 2026BUNSEKI KAGAKUOpen Access

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This research aims to develop an efficient desorption method for perfluoroalkyl carboxylic acids from porous carbon materials using superheated water.
Used high-speed liquid chromatograph for superheated water desorption from porous carbon materials
Tested desorption conditions at 150°C and 3 MPa pressure using fiber activated carbon for PFOA recovery
Compared efficiency of superheated water desorption with traditional alkaline and vacuum heating methods
Achieved desorption efficiencies of TFA at 100% and PFOA at 105% with superheated water method
Traditional methods yielded TFA at 93% and PFOA at 64% via alkaline desorption, and TFA at 82% and PFOA at 45% via vacuum heating
Superheated water method demonstrated a significantly higher efficiency for PFOA extraction compared to conventional methods

Demonstrates enhanced desorption efficiency of PFCAs in porous carbon materials, indicating safety and low environmental impact.

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SHIMAMURA et al. (2026) studied this question.

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