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Process parameters for operating 1-butanol gas stripping in a fermentor

Paper ID Volume ID Publish Year Pages File Format Full-Text
20391 43172 2014 7 PDF Available
Title
Process parameters for operating 1-butanol gas stripping in a fermentor
Abstract

In this study, effects of the agitation speed, the flow rate, and type of non-polar gases on the performance of gas stripping was systematically investigated. Macroscopically, the stripping rate of butanol is linearly proportional to the concentration of butanol in the feed solution. Nevertheless, a decrease in butanol selectivity was observed with the increasing butanol concentrations up to 0.01 g/cm3. This can be attributed to the thermodynamics reason that with increasing butanol concentrations in the feed, more stripping gas will dissolve in the feed solution that decrease the activity of butanol for mass transfer from liquids to gas bubbles. This can be supported by the use of highly soluble gas of carbon dioxide as the stripping gas where the Ksa dropped 48% compared to the nitrogen stripping. By the parameter sensitivity analysis, it has been shown that the dominant variable is the flow rate. The best strategy of maximizing the performance of 1-butanol gas stripping at a given flow rate is to bubble the gases at a high superficial velocity, which leads to a less resistance on the liquid side for mass transfer.

Keywords
1-Butanol; Fermentor; Gas stripping; Superficial velocity; Bubble dynamics
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Process parameters for operating 1-butanol gas stripping in a fermentor
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 118, Issue 5, November 2014, Pages 558–564
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