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Ethanol and acetate synthesis from waste gas using batch culture of Clostridium ljungdahlii

Paper ID Volume ID Publish Year Pages File Format Full-Text
18583 42726 2006 6 PDF Available
Title
Ethanol and acetate synthesis from waste gas using batch culture of Clostridium ljungdahlii
Abstract

Single inorganic carbon source was used for production of chemicals and fuels via fermentation processes. Clostridium ljungdahlii, a strictly anaerobic autotrophic bacterium, was grown on synthesis gas to produce acetate and ethanol from gaseous substrates. C. ljungdahlii was grown on a various concentrations of carbon monoxide with synthesis gas total pressures of 0.8–1.8 atm with an interval of 0.2 atm. The cell and product yields were 0.015 g cell/g CO and 0.41 g acetate/g CO, respectively. Formation of acetate was steady and the production trend was about the same for all of the gases initial pressure and at constant cell density. The ethanol concentration was enhanced by the initial presence of hydrogen and carbon dioxide in the liquid phase. There was no substrate inhibition while C. ljungdahlii was grown in the batch fermentation, even at high system pressure of 1.6 and 1.8 atm. A desired product molar ratio of ethanol:acetate (5:1) was achieved with total gas pressure of 1.6 and 1.8 atm.

Keywords
Synthesis gas; Clostridium ljungdahlii; Ethanol; Acetate; Autotrophic bacterium
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Ethanol and acetate synthesis from waste gas using batch culture of Clostridium ljungdahlii
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 38, Issues 1–2, 3 January 2006, Pages 223–228
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