Loading...
Carbon dioxide rich microbubble acceleration of biogas production in anaerobic digestion
Al-Mashhadani, Mahmood K. H. Wilkinson, Stephen J. Zimmerman, William B.
Al-Mashhadani, Mahmood K. H.
Wilkinson, Stephen J.
Zimmerman, William B.
Advisors
Editors
Other Contributors
Affiliation
EPub Date
Publication Date
2016-12-15
Submitted Date
Collections
Other Titles
Abstract
This paper addresses the use of anaerobic bacteria to convert carbon dioxide to biomethane as part of the biodegradation process of organic waste. The current study utilises gaslift bioreactors with microbubbles generated by fluidic oscillation to strip the methane produced in the gaslift bioreactor. Removal of methane makes its formation thermodynamically more favourable. In addition, intermittent sparging of microbubbles can prevent thermal stratification, maintain uniformity of the pH and increase the intimate contact between the feed and microbial culture with lower energy requirements than traditional mixing. A gaslift bioreactor with microbubble sparging has been implemented experimentally, using a range of carrier gas, culminating in pure carbon dioxide, in the anaerobic digestion process. The results obtained from the experiments show that the methane production rate is approximately doubled with pure carbon dioxide as the carrier gas for intermittent microbubble sparging.
Citation
Al-mashhadani, M. K. H., Wilkinson, S. J., & Zimmerman, W. B. (2016). Carbon dioxide rich microbubble acceleration of biogas production in anaerobic digestion. Chemical Engineering Science, 156, 24-35
Publisher
Journal
Chemical Engineering Science
Research Unit
DOI
10.1016/j.ces.2016.09.011
PubMed ID
PubMed Central ID
Type
Article
Language
en
Description
Series/Report no.
ISSN
0009-2509
EISSN
1873-4405