Aqueous Two Phase Extraction for the Recovery of 1,3-Propanediol from its Aqueous Solutions
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.
1,3-propanediol alcohols phase separation extraction efficiency
Min Hee Chung Yeon Ki Hong Hyoung Wook Lee Sung-Jun Park
Department of Chemical and Biological Engineering Korea National University of Transportation Chungj Department of Energy System Engineering Department of Mechanical Engineering Korea National University of Transportation Chungju, Chungbuk 3
国际会议
北京
英文
154-157
2012-10-26（万方平台首次上网日期，不代表论文的发表时间）