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Title:
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Butanol fermentation of the brown seaweed Laminaria digitata by Clostridium beijerinckii DSM-6422
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Author(s):
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From, N; Hou, X; Angelidaki, I; Huijgen, W.J.J.; Bjerre, A.-B.
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Published by:
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Publication date:
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ECN
Biomass & Energy Efficiency
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11-4-2017
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ECN report number:
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Document type:
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ECN-W--16-037
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Article (scientific)
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Number of pages:
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8
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Published in: Bioresource Technology (Elsevier), , 2017, Vol.238, p.16-21.
Abstract:
Seaweed represents an abundant, renewable, and fast-growing biomass resource for 3rd generation biofuel production. This study reports an ef?cient butanol fermentation process carried out by Clostridium beijerinckii DSM-6422 using enzymatic hydrolysate of the sugar-rich brown seaweed Laminaria digitata harvested from the coast of the Danish North Sea as substrate.
The highest butanol yield (0.42 g/gconsumed-substrates)compared to literature was achieved, with a signi?cantly higher butanol: acetone-butanol-ethanol (ABE) molar ratio (0.85) than typical (0.6). This demonstrates the possibility of using the seaweed L. digitata as a potential biomass for butanol production.
For the ?rst time, consumption of alginate components was observed by C. beijerinckii DSM-6422. The ef?cient utilization of sugars and lactic acid further highlighted the potential of using this strain for future development of large-scale cost-effective butanol production based on (ensiled) seaweed.
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