Journal article
Bioconversion of crude glycerol feedstocks into ethanol by Pachysolen tannophilus
Glycerol, the by-product of biodiesel production, is considered as a waste by biodiesel producers. This study demonstrated the potential of utilising the glycerol surplus through conversion to ethanol by the yeast Pachysolen tannophilus (CBS4044). This study demonstrates a robust bioprocess which was not sensitive to the batch variability in crude glycerol dependent on raw materials used for biodiesel production.
The oxygen transfer rate (OTR) was a key factor for ethanol production, with lower OTR having a positive effect on ethanol production. The highest ethanol production was 17.5 g/L on 5% (v/v) crude glycerol, corresponding to 56% of the theoretical yield. A staged batch process achieved 28.1 g/L ethanol, the maximum achieved so far for conversion of glycerol to ethanol in a microbial bioprocess.
The fermentation physiology has been investigated as a means to designing a competitive bioethanol production process, potentially improving economics and reducing waste from industrial biodiesel production.
Language: | English |
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Year: | 2012 |
Pages: | 559-586 |
ISSN: | 18732976 and 09608524 |
Types: | Journal article |
DOI: | 10.1016/j.biortech.2011.10.065 |
ORCIDs: | Jensen, Peter Ruhdal |
Ascomycota Biodegradation, Environmental Biofuels Glycerol Species Specificity