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Pervaporation of Ethanol/Water Mixtures by PDMS / PVDF Composite Membranes with High Permeability

Authors： Tang Qiao-yu1 Wang Li1 Zhan Xia2 Li Shi-zhong1* Li Jiding2 Li Tian-cheng1

Units： 1 Institute of Nuclear and New Energy Technology , Tsinghua University , Beijing 100084 , China

KeyWords： pervaporation; ethanol selective; PDMS; PVDF

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2011, 31(6):1-5

Abstract：

Polydimethylsiloxane (PDMS) / polyvinylidene fluoride (PVDF) composite membrane was prepared by casting PDMS solution onto polyvinylidene fluoride ( PVDF) porous membranes. The resulted PDMS/ PVDF composite membranes were applied for the pervaporation of ethanol/ water mixtures to determine the application feasibility for solid state fermentation.The effect of cross-linking temperature, operation temperature , ethanol concentration in feed and the permeation pressure on pervaporation performance was investigated systematically. The results showed that the permeation flux reached 281.36 g/ (m2•h) with separation factor of 8.23 at 60 ℃. As the operation temperature increased, the separation factor first increased, and then declined. But as the ethanol concentration in feed increased, the permeation flux increased. And as the downstream pressure of membrane declined, both separation factor and permeation flux increased.

Funds：

国家科技支撑项目（2007BAD42D01），科技部国际合作项目（2010DFA61200），国家973项目（2009CB623404）；国家自然科学基金项目（20736003,20906056）；中国博士后基金(20100470015)；

AuthorIntro：

唐俏瑜（1986-），海南省澄迈县人，女，硕士生，主要从事化学反应工程和生物质能源化工方面的研究； *通讯作者：李十中：（1962-），男，教授，博士生导师，通讯联系人，电话(010)62772123,E-mail:szli@tsinghua.edu.cn。

Reference：

[1]王二强, 耿欣, 李十中, 等. 甜高梁秆分批固态发酵制乙醇动力学研究[J]. 食品与发酵工业. 2009,10:1-4.
[2]黄忠水, 纪威, 鄂卓茂. 我国开发燃料酒精的综合效益分析[J]. 节能. 2001, 12:3~7.
[3]魏红欣. 美巴“乙醇欧佩克”能否触发能源革命[N]. 国际金融报, 2007-3-14(05).
[4]朱百鸣, 陈弈, 付桂明. 燃料酒精的发展进程及研究方向[J]. 江西食品工业. 2005, 2:17~19.
[5] Faaij A P C, Lewandowski I, Van Zeebroeck B. Options of biofuel trade from Central and Eastern to Western European countries [J]. Biomass and Bioenergy. 2009,33(4):728-744.
[6]张君, 刘德华. 世界燃料酒精-工业发展现状与展望[J]. 酿酒科技. 2004，5:118~121.
[7]展侠, 李继定, 黄军其, 等. 渗透汽化优先透醇膜[J]. 化学进展. 2008,20(9):1416-1426.
[8]韩小龙, 展侠, 王蕾,等. 双膜法生产燃料乙醇膜材料研究进展[J]. 现代化工. 2009,29(9):25-29.
[9]顾瑾, 邓利容, 白云翔, 等. VTES交联PDMS渗透汽化膜分离水中乙醇性能的研究[J]. 膜科学与技术. 2010,30(2):19-24.
[10]Yahaya G O. Seperation of volatile organic compounds (BTEX) from aqueous solution by a composite organophilic hollow membrane-based pervaporation process[J]. Journal of membrane science,2008,319（1-2）：82-90.
[11]由涛, 陈龙祥, 张庆文,等. 聚二甲基硅氧烷膜在渗透汽化技术中的研究进展[J]. 化工新型材料. 2009,37(9):1-4.
[12]Toraj M, Abdolreza A, Ali B. Pervaporation of dilute alcoholic mixtures using PDMS membrane[J].Chemical Engineering Science ,2005,60: 1875 – 1880.
[13]Cristina L, Jose A G, Juan R, Gonza V. Pervaporation of 50 wt % Ethanol–Water Mixtures with Poly(1-trimethylsilyl-1-propyne) Membranes at High Temperatures[J]. Journal of Applied Polymer Science. 2007.103: 2843–2848 .
[14]Fenjuan Xiangli, Yiwei Chen, et al. Polydimethylsiloxane (PDMS)/Ceramic Composite Membrane with High Flux for Pervaporation of Ethanol-Water Mixtures[J]. Industrial and Engineering Chemistry Research. 2007, 46:2224-2230.
[15]徐国强, 余江, 王康,等. 蒙脱石-聚二甲基硅氧烷复合膜制备及其乙醇/水分离性能[J]. 化工学报. 2007,58(2):391~395.
[16]Adrian V, Alberto F, Bram L, et al. Performance of a nanofiltration membrane for removal of ethanol from aqueous solutions by pervaporation[J]. Separation and Purification Technology. 2008,60: 54–63.
[17]Thongsukmak A, Sirkar K K. Extractive pervaporation to separate ethanol from its dilute aqueous solutions characteristic of ethanol-producing fermentation processes[J]. Journal of Membrane Science. 2009,329: 119–129.
[18]Toru I, Tomotake M, Shunichi N, et al. Processing of ethanol fermentation broths by Candida krusei to separate bioethanol by pervaporation using silicone rubber-coated silicalitemembranes[J]. Journal of Chemical Technology and Biotechnology. 2009, 84:1172-1177.
[19]Yawen Huang, Peng Zhang, Jianwei Fu, et al. Pervaporation of ethanol aqueous solution by polydimethylsiloxane/polyphosphazene nanotube nanocomposite membranes[J]. Journal of Membrane Science. 2009,339: 85–92.
[20] Claes S, Vandezande P, Mullens S, et al. High flux composite PTMSP-silica nanohybrid membranes for the pervaporation of ethanol/water mixtures[J]. Journal of Membrane Science. 2010,351: 160–167.

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