کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
681621 | 1460034 | 2012 | 6 صفحه PDF | دانلود رایگان |
Pervaporation is one of the most promising separation processes for the purification of ethanol. In this study, a composite hollow-fiber membrane with a thin polydimethylsiloxane (PDMS) active layer on a polyetherimide (PEI) macroporous support was used for pervaporative separation of ethanol produced by Saccharomyces cerevisiae from glucose fermentation broth.The pervaporation performance for ethanol/water binary mixtures was strongly dependent on the feed concentration and operating temperature for ethanol concentrations of 1–10%. The composite hollow-fiber membrane was stable over the long-term (about 160 days) with an ethanol permeation flux of 60–62 g/m2 h and a separation factor of 7–9. In comparison with published results for PDMS composite membranes, the PDMS/PEI hollow-fiber composite membrane had relatively good pervaporation performance with a total flux of 231–252 g/m2 h.
The pervaporation performance maintained in the long-term stability test of the PDMS/PEI composite hollow-fiber membrane.Figure optionsDownload as PowerPoint slideHighlights
► A composite hollow-fiber membrane was used for pervaporative separation.
► Ethanol flux and selectivity has a strong dependence on the feed concentration.
► Pervaporative ethanol separation shows good performances.
► Pervaporation membrane maintained performance in the long term test.
Journal: Bioresource Technology - Volume 109, April 2012, Pages 110–115