Pervaporation Separation of Butanol-Water Mixtures Using Polydimethylsiloxane/Ceramic Composite Membrane  

作　　者：刘公平 侯丹 卫旺 相里粉娟 金万勤 

机构地区：[1]State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China

出　　处：《Chinese Journal of Chemical Engineering》2011年第1期40-44,共5页中国化学工程学报（英文版）

基　　金：Supported by the National Basic Research Program of China（2009CB623406）; the National Natural Science Foundation of China（20990222）; the Natural Science Foundation of Jiangsu Province（SBK200930313）; the“Six Kinds of Important Talents”Program of Jiangsu Province（2007007）

摘　　要：Pervaporation has attracted considerable interest owing to its potential application in recovering biobutanol from biomass acetone-butanol-ethanol (ABE) fermentation broth. In this study, butanol was recovered from its aqueous solution using a polydimethylsiloxane (PDMS)/ceramic composite pervaporation membrane. The effects of operating temperature, feed concentration, feed flow rate and operating time on the membrane pervaporation performance were investigated. It was found that with the increase of temperature or butanol concentration in the feed, the total flux through the membrane increased while the separation factor decreased slightly. As the feed flow rate increased, the total flux increased gradually while the separation factor changed little. At 40°C and 1% (by mass) butanol in the feed, the total flux and separation factor of the membrane reached 457.4 g·m?2·h?1 and 26.1, respectively. The membrane with high flux is suitable for recovering butanol from ABE fermentation broth.Pervaporation has attracted considerable interest owing to its potential application in recovering biobutanol from biomass acetone-butanol-ethanol（ABE）fermentation broth.In this study,butanol was recovered from its aqueous solution using a polydimethylsiloxane（PDMS）/ceramic composite pervaporation membrane.The effects of operating temperature,feed concentration,feed flow rate and operating time on the membrane pervaporation performance were investigated.It was found that with the increase of temperature or butanol concentration in the feed, the total flux through the membrane increased while the separation factor decreased slightly.As the feed flow rate increased,the total flux increased gradually while the separation factor changed little.At 40°C and 1%（by mass） butanol in the feed,the total flux and separation factor of the membrane reached 457.4 g·m 2 ·h 1 and 26.1,respectively.The membrane with high flux is suitable for recovering butanol from ABE fermentation broth.

关 键 词：PERVAPORATION BUTANOL PDMS CERAMIC composite membrane 

分 类 号：TQ174.758[化学工程—陶瓷工业] O634.41[化学工程—硅酸盐工业]