Continuous ethanol production from concentrated wood hydrolysates in an internal membrane-filtration bioreactor

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Continuous culture for the production of ethanol from wood hydrolysate was carried out in an internal membrane-filtration bioreactor. The hydrolysate medium was sterilized at a relatively low temperature of 60 degrees C with the intention of reducing the formation of inhibitory compounds during the sterilization, The maximum ethanol concentration and productivity obtained in this study were 76.9 g/L and 16.9 g/L-h, respectively, which were much higher than those (57.2-67 g/L and 0.3-1-0 g/L-h) obtained in batch cultures using hydrolysate media sterilized at 60 degrees C. The productivity was also found to be much higher than that (6.7 g/L-h) obtained in a continuous cell retention culture using a wood hydrolysate sterilized at 121 degrees C. These results show that the internal membrane-filtration bioreactor in combination with low-temperature sterilization could be very effective for ethanol production from wood hydrolysate.
Publisher
AMER CHEMICAL SOC
Issue Date
2000-03
Language
English
Article Type
Article
Keywords

CELL RECYCLE; FERMENTATION; LIGNOCELLULOSICS; CULTURE

Citation

BIOTECHNOLOGY PROGRESS, v.16, no.2, pp.302 - 304

ISSN
8756-7938
URI
http://hdl.handle.net/10203/77171
Appears in Collection
CBE-Journal Papers(저널논문)
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