Journal
BIORESOURCE TECHNOLOGY
Volume 200, Issue -, Pages 648-657Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.09.117
Keywords
Ethanol fermentation; Pervaporation; PDMS membrane; Process integration
Funding
- National Basic Research Program of China [2013CB733600, 2012CB725200]
- National Nature Science Foundation of China [21390202, 21476015]
- National High-Tech R&D Program of China [2014AA021904, 2014AA021903]
- Fundamental Research Funds for the Central Universities [YS1407]
- Ministry of Education of PRC
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The polydimethylsiloxane (PDMS) membrane, prepared in water phase, was investigated in separation ethanol from model ethanol/water mixture and fermentation-pervaporation integrated process. Results showed that the PDMS membrane could effectively separate ethanol from model solution. When integrated with batch ethanol fermentation, the ethanol productivity was enhanced compared with conventional process. Fed-batch and continuous ethanol fermentation with pervaporation were also performed and studied. 396.2-663.7 g/m(2) h and 332.4-548.1 g/m(2) h of total flux with separation factor of 8.6-11.7 and 8-11.6, were generated in the fed-batch and continuous fermentation with pervaporation scenario, respectively. At the same time, high titre ethanol production of similar to 417.2 g/L and similar to 446.3 g/L were also achieved on the permeate side of membrane in the two scenarios, respectively. The integrated process was environmental friendly and energy saving, and has a promising perspective in long-terms operation. (C) 2015 Elsevier Ltd. All rights reserved.
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