Continuous ethanol production from wood hydrolysate by chemostat and total cell retention culture |
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| Authors: | Woo Gi Lee Jin Suk Lee Byung Geon Park Mi Sun Kim Soon Chul Park Ho Nam Chang |
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| Affiliation: | (1) Biomass Research Team, Korea Institute of Energy Research, 71-2. Jang-dong, Yuseong gu, 305-343 Taejon, Korea;(2) Department of Chemical Engineering and Bioprocess Engineering Research Center, Korea Advanced Institute of Science and Technology, 305-701 Taejon, Korea |
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| Abstract: | Chemostat and total cell retention cultures with internal filter system ofSaecharomyc.es cerevisiae H1-7 were carried out to produce ethanol from wood hydrolysate. Maximum ethanol productivity obtained in a chemostat with
the aeration rate of 1 vvm was 3.79 g/(L·h). This was 20% higher than that in a chemostat without aeration. However, the substrate
was not completely consumed at the dilution rate with the maximum productivity. The realistic productivity, which has higher
than 99% conversion rate of substrate, was. 2.95 g/(L·h). The maximum productivity in the total cell retention culture was
6.65 g/(L·h) at the dilution rate of 0.19 h1 and the residual glucose concentration was negligible. |
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| Keywords: | Wood Hydrolysaie Toxic Materials Continuous Ethanol Fermentation Realistic Productivity Internal Filter System |
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