Vapor-phase membrane concentration of bioethanol and biobutanol using hydrophobic membranes based on glassy polymers
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- 作者：M. G. Shalygin ; A. A. Kozlova ; A. I. Netrusov ; V. V. Teplyakov
- 关键词：vapor permeability ; membrane vapor separation ; separation of water–alcohol mixtures ; hydrophobic polymer membranes
- 刊名：Petroleum Chemistry
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：56
- 期：10
- 页码：977-986
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Industrial Chemistry/Chemical Engineering;
- 出版者：Pleiades Publishing
- ISSN：1555-6239
- 卷排序：56
文摘
Pervaporation and vapor-phase membrane separation methods for the recovery of bioalcohols from dilute aqueous solutions have been critically compared. The importance of taking into account the liquid–vapor equilibrium diagram in studies on the separation of binary aqueous–alcoholic liquid media by these methods has been shown. Previously published experimental data on the transport of water, ethanol, and n-butanol vapors in hydrophobic membranes based on the glassy polymers poly(vinyltrimethylsilane) (PVTMS), poly(1-trimethylsilyl-1-propyne) (PTMSP), and poly(4-methyl-1-pentyne) (PMP) have been analyzed. Schemes of butanol and ethanol recovery by the vapor-phase membrane separation process from fermentation broths for the cases of application of water-selective and alcohol-selective membranes have been presented, as well as the results of mathematical simulation of the process and assessment of energy consumption.