Butanol production from concentrated lactose/whey permeate: Use of pervaporation membrane to recover and concentrate product
Applied Microbiology and Biotechnology, ISSN: 1432-0614, Vol: 98, Issue: 23, Page: 9859-9867
2014
- 30Citations
- 59Captures
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Metrics Details
- Citations30
- Citation Indexes30
- 30
- CrossRef25
- Captures59
- Readers59
- 58
Article Description
In these studies, butanol (acetone butanol ethanol or ABE) was produced from concentrated lactose/whey permeate containing 211 g L lactose. Fermentation of such a highly concentrated lactose solution was possible due to simultaneous product removal using a pervaporation membrane. In this system, a productivity of 0.43 g L h was obtained which is 307 % of that achieved in a non-product removal batch reactor (0.14 g L h) where approximately 60 g L whey permeate lactose was fermented. The productivity obtained in this system is much higher than that achieved in other product removal systems (perstraction 0.21 g L h and gas stripping 0.32 g L h). This membrane was also used to concentrate butanol from approximately 2.50 g L in the reactor to 755 g L. Using this membrane, ABE selectivities and fluxes of 24.4–44.3 and 0.57–4.05 g m h were obtained, respectively. Pervaporation restricts removal of water from the reaction mixture thus requiring significantly less energy for product recovery when compared to gas stripping.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84911808005&origin=inward; http://dx.doi.org/10.1007/s00253-014-6117-5; http://www.ncbi.nlm.nih.gov/pubmed/25326775; http://link.springer.com/10.1007/s00253-014-6117-5; https://dx.doi.org/10.1007/s00253-014-6117-5; https://link.springer.com/article/10.1007/s00253-014-6117-5
Springer Science and Business Media LLC
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