The Study on Pervaporation Behaviors of Dilute Organic Solution Through PDMS/PTFE Composite Membrane
The Study on Pervaporation Behaviors of Dilute Organic Solution Through PDMS/PTFE Composite Membrane
复制标题
PDMS/PTFE复合膜对稀有机溶液渗透汽化行为的研究
DOI：
10.1007/s12010-009-8582-3
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发表时间：
2010
影响因子：
2.6
通讯作者：
Zhang, Wei-dong
中科院分区：
文献类型：
--
作者：
Yang, Jing;Sun, Wei;Ren, Zhong-qi;Zhang, Wei-dong
作为蒸馏的一种节能替代方法，渗透蒸发已广泛地与发酵相结合，以从发酵液中的稀释溶液中去除有机化合物。本研究将聚二甲基硅氧烷（PDMS）与正庚烷交联涂覆在聚四氟乙烯（PTFE）膜的基底上，制备了有机过选择性复合膜。在丙酮稀溶液、丁酮稀溶液、环己酮稀溶液、乙醇稀溶液、异丙醇稀溶液、正丁醇稀溶液、乙酸稀溶液、乙酸乙酯稀溶液等不同稀释有机溶液中的分离行为进行了研究。这些溶液大多是发酵过程中的主要反应产物或副产物。考察了有机物在膜中的溶解度、分子量和极性对渗透蒸发性能的影响。研究了操作温度和进料液中有机物浓度对复合膜性能的影响。实验结果表明，这些有机溶剂的溶解度和分子极性对分子体积的影响较小。由于乙酸乙酯分子在聚合物中具有良好的溶解度和弥散性，PDMS膜对乙酸乙酯的选择性较高。
As an energy-efficient alternative to distillation, pervaporation has been widely combined with fermentation to remove organic compounds from their dilute solutions in a fermentation broth. In this work, the organic permselective composite membrane is prepared by coating polydimethylsiloxane (PDMS) cross-linked with n-heptane on the substrate of polytetrafluoroethylene(PTFE) membrane. The separation behavior is studied in different dilute organic solutions, which include acetone dilute solution, butanone dilute solution, cyclohexanone dilute solution, ethanol dilute solution, isopropanol dilute solution, n-butyl alcohol dilute solution, acetic acid dilute solution, and ethyl acetate dilute solution. Most of these solutions are main reaction products or by-products from fermentation process. The effects of solubility of organics in the membrane, molecular weight, and polarity of the organics on the pervaporation performance are investigated. The effects of operating temperature and organic concentration in the feed solutions on the performance of composite membrane are studied as well. The experimental results show that molecular volume has less influence than solubility and molecular polarity for these organic solvent. The selectivity of PDMS membrane to ethyl acetate is relative high due to good solubility and diffusion of ethyl acetate molecules in polymer.
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影响因子：
9.5
作者：
KEDEM, O
通讯作者：
KEDEM, O
影响因子：
9.5
作者：
M. G. Liu;J. M. Dickson;P. Cote
通讯作者：
M. G. Liu;J. M. Dickson;P. Cote
影响因子：
3
作者：
C. Yeom;H. K. Kim;J. Rhim
通讯作者：
C. Yeom;H. K. Kim;J. Rhim
影响因子：
2.8
作者：
W. Kujawski;Renata Roszak
通讯作者：
W. Kujawski;Renata Roszak
DOI：
10.5860/choice.35-3079
发表时间：
2007-10
期刊：
The International Journal of Advanced Manufacturing Technology
影响因子：
--
作者：
R. H. Perry;D. Green;J. O. Maloney
通讯作者：
R. H. Perry;D. Green;J. O. Maloney