Method for separating and concentrating an organic component from an aqueous solution containing same
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United States of America Patent
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Oct 24, 1989
Grant Date -
N/A
app pub date -
Aug 26, 1987
filing date -
Sep 2, 1986
priority date (Note) -
Expired
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Abstract
Disclosed is a method for separating and concentrating an organic component having a lower boiling point than water from an aqueous solution containing the organic component which comprises the steps of (1) bringing an aqueous solution containing an organic component having a lower boiling point than water into contact with one surface of a hydrophobic porous membrane, continuously or intermittently evacuating the side of the porous membrane opposite to the aqueous solution to obtain a concentrated vapor of the organic component, and liquefying the vapor; and (2) bringing the resulting concentrated aqueous solution into contact with one surface of a hydrophobic nonporous membrane, evacuating the side of the non-porous membrane opposite to the concentrated aqueous solution to obtain a further concentrated vapor of the organic component, and liquefying the vapor. When this method is applied, for example, to a continuous fermentation process, the fermentation can be continued with efficient removal of the fermentation product from the broth.
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