聚偏氟乙烯/聚二甲基硅氧烷渗透气化膜在丁醇分离中的应用
Application of polyvinylidene fluoride/polydimethylsiloxane composite membrane in butanol recovery
摘要
Abstract
A polyvinylidene fluoride (PVDF)/polydimethylsiloxane (PDMS) composite membrane for butanol recovery was fabricated by coating a dense PDMS separation layer on a PVDF porous support layer prepared by phase inversion. The total flux and separation factor of the PVDF/PDMS composite membrane could be 158.2 g·m-2·h-1 and 17.3, respectively, when feed solution was 15 g·L-1 butanol at 37℃ with a flow rate 1.6 L·min-1. To simulate the fermentation liquor, acetone and ethanol were added into the feed solution in a ratio 6(butanol):3:1, the total flux of PVDF/PDMS composite membrane increased to 189.5 g·m-2·h-1, but separation factor decreased to 14.8. Furthermore, fermentation broths with/without biomass as feed solution were investigated to evaluate pervaporation performance of the PVDF/PDMS composite membrane. The total flux and separation factor were 120.2 g·m-2·h-1 and 19.7 for without biomass case, 122.1 g·m-2·h-1 and 16.7 for with biomass case, respectively. Compared with PDMS membrane, the performance of PVDF/PDMS composite membrane had significant improvement for butanol recovery, indicating that it is of potential for industrial application of butanol recovery.关键词
生物燃料/生物分离/PVDF/PDMS复合膜/渗透气化/丁醇Key words
biofuel/bioseparation/PVDF/PDMS composite membrane/pervaporation/butanol分类
生物科学引用本文复制引用
杜广庆,陈丽杰,薛闯,白凤武..聚偏氟乙烯/聚二甲基硅氧烷渗透气化膜在丁醇分离中的应用[J].化工学报,2014,(9):3499-3504,6.基金项目
国家自然科学基金项目(21306020，21376044)；教育部博士点基金（20130041120027）；辽宁省教育厅科学研究一般项目（L2013022）；中国博士后科学基金项目（2013M530904，2014T70257）；辽宁省博士科研启动基金（20141197）；中国科学院生物燃料重点实验室开放基金(CASKLB201303)；教育部留学回国人员科研启动基金。@@@@supported by the National Natural Science Foundation of China (21306020,21376044), the Specialized Research Fund for the Doctoral Program of Higher Education of China (20130041120027), the Scientific Research Fund of Liaoning Provincial Education Department (L2013022), China Postdoctoral Science Foundation (2013M530904,2014T70257), Doctor Startup Fund of Liaoning Province (20141197), the Open Research Fund from Biofuels Key Laboratory of Chinese Academy of Sciences in Qingdao Institute of Bioenergy and Bioprocess Technology (CASKLB201303) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars of State Education Ministry （21306020，21376044）
