Fig. 6From: Novel distillation process for effective and stable separation of high-concentration acetone–butanol–ethanol mixture from fermentation–pervaporation integration processEffect of condenser pressure–reflux ratio in different distillation columns aiming to produce the acceptable products (95 wt% ethanol, 99.7 wt% acetone and 100 wt% butanol). a Beer column; b acetone column; c ethanol column; d butanol and water columnsBack to article page