Production of acetone, butanol, and ethanol from biomass of the green seaweed Ulva lactuca

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Abstract: 

Green seaweed Ulva lactuca harvested from the North Sea near Zeeland (The Netherlands) was characterized as feedstock for acetone, ethanol and ethanol fermentation. Solubilization of over 90% of sugars was achieved by hot-water treatment followed by hydrolysis using commercial cellulases. A hydrolysate was used for the production of acetone, butanol and ethanol (ABE) by Clostridium acetobutylicum and Clostridium beijerinckii. Hydrolysate-based media were fermentable without nutrient supplementation. C. beijerinckii utilized all sugars in the hydrolysate and produced ABE at high yields (0.35 g ABE/g sugar consumed), while C. acetobutylicum produced mostly organic acids (acetic and butyric acids). These results demonstrate the great potential of U. lactuca as feedstock for fermentation. Interestingly, in control cultures of C. beijerinckii on rhamnose and glucose, 1,2 propanediol was the main fermentation product (9.7 g/L).

Author(s): 
Ana M. López-Contreras
Willem Brandenburg
Robert R.C. Bakker
Bwee Houweling-Tan
Bram L.H.M. Sperber
Hetty van der Wal
Keywords: 
Biobutanol
ABE fermentation
Macroalgae
Ulva lactuca
Biorefinery
1,2-Propanediol
Link / Ref: 
Polymtl
Attachment: 
PDF icon Production of acetone, butanol, and ethanol from biomass of the green seaweed Ulva.pdf
Article Source: 
Bioresource Technology 128 (2013) 431–437
Category: 
Processing methods
Uses of Seaweeds: Miscellaneous