NDLI: Butanol production from concentrated lactose/whey permeate: Use of pervaporation membrane to recover and concentrate product

Content Provider	Springer Nature Link
Author	Qureshi, N. Friedl, A. Maddox, I. S.
Copyright Year	2014
Abstract	In these studies, butanol (acetone butanol ethanol or ABE) was produced from concentrated lactose/whey permeate containing 211 g L−1 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−1 h−1 was obtained which is 307 % of that achieved in a non-product removal batch reactor (0.14 g L−1 h−1) where approximately 60 g L−1 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−1 h−1 and gas stripping 0.32 g L−1 h−1). This membrane was also used to concentrate butanol from approximately 2.50 g L−1 in the reactor to 755 g L−1. Using this membrane, ABE selectivities and fluxes of 24.4–44.3 and 0.57–4.05 g m−2 h−1 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.
Starting Page	9859
Ending Page	9867
Page Count	9
File Format	PDF
ISSN	01757598
Journal	Applied Microbiology and Biotechnology
Volume Number	98
Issue Number	23
e-ISSN	14320614
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-10-19
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Butanol Membrane Pervaporation Whey permeate Productivity Concentrated butanol ABE Microbiology Microbial Genetics and Genomics Biotechnology
Content Type	Text
Resource Type	Article
Subject	Medicine Applied Microbiology and Biotechnology Biotechnology

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