Journal of Microbiology and Biotechnology

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Ethanol Production from Lignocellulosic Biomass by Simultaneous Saccharification and Fermentation Employing the Reuse of Yeast and Enzyme

  • KIM, JUN-SUK (Department of Chemical Engineering, Korea University) ;
  • KYUNG-KEUN OH (Department of Industrial Chemistry, Dankook University) ;
  • SEUNG-WOOK KIM (Department of Chemical Engineering, Korea University) ;
  • YONG-SEOB JEONG (Faculty of Biotechnology, Chonbuk National University) ;
  • SUK-IN HONG (Department of Chemical Engineering, Korea University)
  • Published : 1999.06.01
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Abstract

Simultaneous saccharification and fermentation (SSF) experiments were carried out with a lignocellulosic biomass. The effects of temperature on enzymatic saccharification and the ethanol fermentation were also investigated. The batch SSF process gave a final ethanol concentration of 10.44 g/l and equivalent glucose yield of 0.55 g/g, which was increased by 67％ or higher over the saccharification at 42℃. The optimal operating condition was found to vary in several parameters, such as the transmembrane pressure, permeation rate, and separation coefficient, related to the SSF combined with membrane system (semi-batch system). When the fermentation was operated in a semi-batch mode, the efficiency of the enzymes and yeast lasted three times longer than in a batch mode.

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References

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