METHOD FOR PRODUCING BUTANOL Russian patent published in 2015 - IPC C07C31/12 C07C29/76 B01D61/14 B01D71/56 C12P7/16 B82Y99/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing butanol, a compound which is industrially very important as a raw material of chemicals and pharmaceutical agents, as a solvent, and as a fuel material. The method comprises: step A, filtering a butanol-containing solution, obtained by microbial fermentation, through a nanofiltration membrane, and collecting butanol-containing solution from the permeate flow of said nanofiltration membrane; step B, filtering the collected butanol-containing solution through a reverse osmosis membrane to increase the butanol concentration for further separation of butanol phase from aqueous phase; step C, separation of butanol from the said butanol phase of step B.

EFFECT: high-purity butanol can be obtained using the proposed method.

10 cl, 2 dwg, 10 tbl, 15 ex