Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7071704 | Bioresource Technology | 2016 | 7 Pages |
Abstract
An energy efficient pervaporation membrane bioreactor with mechanical vapor compression was developed for ethanol recovery during the process of fermentation coupled with pervaporation. Part of the permeate vapor at the membrane downstream under the vacuum condition was condensed by running water at the first condenser and the non-condensed vapor enriched with ethanol was compressed to the atmospheric pressure and pumped into the second condenser, where the vapor was easily condensed into a liquid by air. Three runs of fermentation-pervaporation experiment have been carried out lasting for 192 h, 264 h and 360 h respectively. Complete vapor recovery validated the novel pervaporation membrane bioreactor. The total flux of the polydimethylsiloxane (PDMS) membrane was in the range of 350 g mâ2 hâ1 and 600 g mâ2 hâ1. Compared with the traditional cold traps condensation, mechanical vapor compression behaved a dominant energy saving feature.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Senqing Fan, Zeyi Xiao, Minghai Li,