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An aqueous two-phase system consisting of methanol and phosphate was used to extract 1,3-propanediol from glycerol-based fermentation broth. Methanol not only extracted 1,3-propanediol effectively from the broth through forming aqueous two-phase system with phosphate, but also allowed the recovery of phosphate by dilution crystallization through adjusting the pH. At 35% (v/v) methanol, saturated concentration...
Separation of 2,3-butanediol from the fermentation broth is a difficult task that has become a bottleneck in industrial production. Aqueous two-phase systems composed of hydrophilic solvents and inorganic salts could be used to extract 2,3-butanediol from fermentation broth. The ethanol/ammonium sulfate system was investigated in detail, including phase diagram, effect of phase composition on partition,...
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