Butanol manufacturing method

摘要

Highly pure butanol can be produced by a method for producing butanol, the method comprising: Step A, wherein a butanol-containing solution is filtered through a nanofiltration membrane and a butanol-containing solution is recovered from the permeate side; Step B, wherein the butanol-containing solution obtained in Step A is passed through a reverse osmosis membrane and thereby concentrated to cause two-phase separation into a butanol phase and an aqueous phase; and Step C, wherein butanol is recovered from the butanol phase obtained in Step B.

主权项

1. A method for producing butanol, said method comprising:
a) filtering a microbial fermentation solution containing butanol through a nanofiltration membrane; b) recovering a filtered solution from the nanofiltration membrane; c) passing the filtered solution from step b) through a reverse osmosis membrane and obtaining a butanol concentrated solution; d) separating the butanol concentrated solution of step c) and causing a two-phase separation into a butanol phase and an aqueous phase; and e) recovering a butanol product from the butanol phase of step d).