Acid Extraction from Liquid Phase Pyrolysis Oil Using Cyanex®923 and Subsequent Solvent Regeneration

Liquid phase pyrolysis (LPP) oil, an intermediate from biofuel production using second‐generation biomass, is a promising source of biobased platform chemicals like acetic acid, however, displaying a complex, multicomponent mixture. Reactive extraction with Cyanex®923 was investigated for selective recovery of acids and subsequent solvent regeneration in distillation at 200 mbar. In a three‐stage extraction 81 % of acids were removed from the LPP oil without loss of Cyanex®923 to the raffinate. Solvent regeneration efficiency of acids was up to 99.7 % with mainly acids and water in the distillate. Liquid phase pyrolysis oil is a renewable source for platform chemicals like acetic acid, using second‐generation biomass. Reactive extraction is a promising technology for selective recovery of acids from multicomponent mixture. This project deals with acid extraction from liquid phase pyrolysis oil and solvent regeneration via distillation.