Kemira Oyj

Jarmo Reunanen

Timo H Nissinen

Pekka Oinas

Esko Tirronen

The invention relates to a process for the recovery of concentrated high purity formic acid having a concentration of at least 50%, most preferably at least 95%, from biomass wherein an aqueous liquid mixture containing levulinic acid and possibly furfural is subjected to a liquid-liquid extraction step, followed by the recovery of furfural, formic acid and levulinic acid.

Process for recovery of formic acid

Processes for the recovery of formate salt from biomass and the product obtained thereof generally include subjecting an aqueous liquid mixture containing levulinic acid, formic acid and possibly furfural to a liquid-liquid extraction process, followed by the recovery of the furfural, the formate salt and the levulinic acid or the levulinate salt.

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Oulu, Finland

Jarmo Reunanen