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A novel and environment-friendly bioprocess of 1,3-propanediol fermentation integrated with aqueous two-phase extraction by ethanol/sodium carbonate system

Paper ID Volume ID Publish Year Pages File Format Full-Text
3257 161 2013 8 PDF Available
Title
A novel and environment-friendly bioprocess of 1,3-propanediol fermentation integrated with aqueous two-phase extraction by ethanol/sodium carbonate system
Abstract

•Developing an efficient integrated system of fermentation and separation by ATPS.•The system can dramatically increase the fermentation and separation efficiency.•The system could recover most of salt.•The system could dramatically reduce the energy expenditure and CO2 emissions.

An integrated fermentation–separation process for the production of 1,3-propanediol (1,3-PD) was investigated. Aqueous two-phase system (ATPS) not only recovered 97.9% of 1,3-PD, but simultaneously also removed 99.1% cells, 81.9% proteins, 75.5% organic acids, and 78.7% water. Furthermore, after extraction the bottom phase of ATPS was used to adjust the pH of the culture during fermentation, leading to 16% and 126% increases in the concentrations of 1,3-PD and lactic acid, and dramatic decreases in the concentration of acetic acid and formic acid. The total mass conversion yield of three main products (1,3-PD, 2,3-butanediol, and lactic acid) from glycerol reached 81.6%. The salt-enriched phase could also be used to absorb carbon dioxide (CO2), resulting in 94% recovery for carbonate. Finally, process simulation using the program PRO/II showed the use of ATPS reduced 75.1% of the energy expenditure and 89.0% of CO2 emissions.

Keywords
1,3-Propanediol; Fermentation; Aqueous two-phase extraction; Capture and sequestration of CO2
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A novel and environment-friendly bioprocess of 1,3-propanediol fermentation integrated with aqueous two-phase extraction by ethanol/sodium carbonate system
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 80, 15 November 2013, Pages 68–75
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us