Bioethanol as a renewable energy resource plays an important role in alleviating energy crisis and environmental protection. Pervaporation has achieved increasing attention because of its potential to be a useful way to separate ethanol from the biomass fermentation process. This overview of ethanol separation via pervaporation primarily concentrates on transport mechanisms, fabrication methods, and membrane materials. The research and development of polymeric, inorganic, and mixed matrix membranes are reviewed from the perspective of membrane materials as well as modification methods. The recovery performance of the existing pervaporation membranes for ethanol solutions is compared, and the approaches to further improve the pervaporation performance are also discussed. Overall, exploring the possibility and limitation of the separation performance of PV membranes for ethanol extraction is a long-standing topic. Collectively, the quest is to break the trade-off between membrane permeability and selectivity. Based on the facilitated transport mechanism, further exploration of ethanol-selective membranes may focus on constructing a well-designed microstructure, providing active sites for facilitating the fast transport of ethanol molecules, hence achieving both high selectivity and permeability simultaneously. Finally, it is expected that more and more successful research could be realized into commercial products and this separation process will be deployed in industrial practices in the near future.

中文翻译：

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通过全蒸发生产生物乙醇的膜

生物乙醇作为可再生能源，在缓解能源危机和环境保护方面发挥着重要作用。由于全蒸发是将乙醇从生物质发酵过程中分离出来的有用方法，因此全蒸发已引起越来越多的关注。通过渗透蒸发分离乙醇的概述主要集中于运输机理，制造方法和膜材料。从膜材料以及改性方法的角度综述了聚合物，无机和混合基质膜的研究与发展。比较了现有渗透汽化膜对乙醇溶液的回收性能，并讨论了进一步提高渗透汽化性能的方法。总体，探索用于乙醇提取的PV膜分离性能的可能性和局限性是一个长期存在的课题。共同地，寻求打破膜渗透性和选择性之间的折衷。基于便利的运输机制，对乙醇选择性膜的进一步探索可能集中在构建精心设计的微结构上，从而为促进乙醇分子的快速运输提供活性位点，从而同时实现高选择性和渗透性。最后，预计将对商业产品实现越来越多的成功研究，并且这种分离过程将在不久的将来应用于工业实践中。目的是打破膜渗透性和选择性之间的权衡。基于便利的运输机制，对乙醇选择性膜的进一步探索可能集中在构建精心设计的微结构上，从而为促进乙醇分子的快速运输提供活性位点，从而同时实现高选择性和渗透性。最后，预计将对商业产品实现越来越多的成功研究，并且这种分离过程将在不久的将来应用于工业实践中。目的是打破膜渗透性和选择性之间的权衡。基于便利的运输机制，对乙醇选择性膜的进一步探索可能集中在构建精心设计的微结构上，从而为促进乙醇分子的快速运输提供活性位点，从而同时实现高选择性和渗透性。最后，预计将对商业产品进行越来越多的成功研究，并且这种分离过程将在不久的将来应用于工业实践中。因此同时实现了高选择性和渗透性。最后，预计将对商业产品实现越来越多的成功研究，并且这种分离过程将在不久的将来应用于工业实践中。因此同时实现了高选择性和渗透性。最后，预计将对商业产品实现越来越多的成功研究，并且这种分离过程将在不久的将来应用于工业实践中。