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ECN publication
Title:
Butanol fermentation of the brown seaweed Laminaria digitata by Clostridium beijerinckii DSM-6422
 
Author(s):
From, N; Hou, X; Angelidaki, I; Huijgen, W.J.J.; Bjerre, A.-B.
 
Published by: Publication date:
ECN Biomass & Energy Efficiency 11-4-2017
 
ECN report number: Document type:
ECN-W--16-037 Article (scientific)
 
Number of pages:
8  

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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