Production of highly concentrated ethanol in a coupled fermentation/pervaporation process using silicalite membranes |
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| Authors: | T Ikegami H Yanagishita D Kitamoto K Haraya T Nakane H Matsuda N Koura T Sano |
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| Institution: | (1) Kyushu National Industrial Research Institute, 807–1, Shuku-machi, Tosu Saga, 841, Japan;(2) National Institute of Materials and Chemical Research, Tsukuba, Ibaraki, 305, Japan;(3) Science University of Tokyo, Noda Chiba, 278, Japan;(4) Japan Advanced Institute of Science and Technology, Tatsunokuchi Ishikawa, 923–12, Japan |
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| Abstract: | The fermentation performance of a coupled fermentation/pervaporation process using silicalite membranes, which are ethanol permselective for an ethanol/water solution, was studied. The process exhibited about a 20% increase in an average glucose consumption rate as compared with that without the pervaporation unit. A strong correlation was observed between the membrane flux and the consumption rate. Ethanol concentrations in the permeates reached a maximum of 85% (v/v). |
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