A selective process to recover monofunctional methoxyphenols (MPs) from biomass pyrolysis liquids has been developed. The process integrates distillation and extraction. Exploiting slight differences between acid strengths of various phenolics enabled the concentration of the MPs. A bio-product containing up to 88 wt% eugenols and guaiacols was recovered.
A selective extraction method for recovery of monofunctional methoxyphenols from biomass pyrolysis liquids