Butanol recovery from synthetic fermentation broth by vacuum distillation in a rotating packed bed

•Butanol recovery via distillation close to fermentation temperature by reduced pressure.•Furfural and carboxylic acids with five and more carbon atoms separated with butanol.•Concept: butanol stripping from synthetic fermentation broth with 5 wt% of steam.•Heteroazeotropic distillation still possible with side components present.