Gas controlled hydrogen fermentation

Bastidas-Oyanedel, Juan-Rodrigo, Mohd-Zaki, Zuhaida, Zeng, Raymond J., Bernet, Nicolas, Pratt, Steven, Steyer, Jean-Philippe and Batstone, Damien John (2012) Gas controlled hydrogen fermentation. Bioresource Technology, 110 503-509. doi:10.1016/j.biortech.2012.01.122


Author Bastidas-Oyanedel, Juan-Rodrigo
Mohd-Zaki, Zuhaida
Zeng, Raymond J.
Bernet, Nicolas
Pratt, Steven
Steyer, Jean-Philippe
Batstone, Damien John
Title Gas controlled hydrogen fermentation
Journal name Bioresource Technology   Check publisher's open access policy
ISSN 0960-8524
1873-2976
Publication date 2012-04
Sub-type Article (original research)
DOI 10.1016/j.biortech.2012.01.122
Volume 110
Start page 503
End page 509
Total pages 7
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2013
Language eng
Formatted abstract
Acidogenic fermentation is an anaerobic process of double purpose, while treating organic residues it produces chemical compounds, such as hydrogen, ethanol and organic acids. Therefore, acidogenic fermentation arises as an attractive biotechnology process towards the biorefinery concept. Moreover, this process does not need sterile operating conditions and works under a wide range of pH.

Changes of operating conditions produce metabolic shifts, inducing variability on acidogenic product yield. To induce those changes, experiments, based on reactor headspace N2-flushing (gas phase), were designed. A major result was the hydrogen yield increase from 1 to 3.25 ± 0.4 (molH2·molglucose-1) at pH 4.5 and N2-flushing of 58.4 (L · d−1). This yield is close to the theoretical acidogenic value (4 View the MathML source).

The mechanisms that explain this increase on hydrogen yield shifts are related to the thermodynamics of three metabolic reactions: lactate hydrogenase, NADH hydrogenase and homoacetogenesis, which are affected by the low hydrogen partial pressures.
Keyword Biohydrogen
Acidogenic fermentation
Hydrogen dark fermentation
Biorefinery
Bioenergy
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
Advanced Water Management Centre Publications
 
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