Aqueous Two Phase Extraction for the Recovery of 1,3-Propanediol from Its Aqueous Solutions
Aqueous Two Phase Extraction for the Recovery of 1,3-Propanediol from Its Aqueous Solutions作者机构：Department of Chemical and Biological Engineering Korea National University of Transportation Chungju Chungbuk 380-702 Korea Department of Energy System Engineering Department of Mechanical Engineering Korea National University of Transportation Chungju Chungbuk 380-702 Korea
出 版 物：《Advances in Materials Physics and Chemistry》 (材料物理与化学进展（英文）)
年 卷 期：2012年第2卷第4期
页 面：154-157页
主 题：1 3-Propanediol Alcohols Phase Separation Extraction Efficiency
摘 要：As the biodiesel production is rapidly enhanced, the crude glycerol, which is by-product of biodiesel processes, is state of surplus. 1,3-PDO (1,3-propanediol), a valuable monomer of poly(trimethylene terephthalate) (PTT), can be produced from the fermentation process using crude glycerin as a carbon source. For the economic biological production of 1,3-PDO, the low cost and high efficient separation processes is essential. In this study, aqueous two-phase system composed of various hydrophilic alcohols and salt was used as a primary separation step for 1,3-PDO. It was found that the aqueous two-phase systems are easily formed with decreasing of the polarity of alcohols. The extraction efficiency is proportional to the polarity of alcohols. In case of methanol or ethanol/K2HPO4, the extraction efficiency was more than 90%.? It was concluded that the aqueous two-phase extraction using methanol or ethanol/K2HPO4 can be applied? for the primary separation of 1,3-PDO? as an alternative to a conventional primary separation processes.
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