Continuous Ethanol Production Through Fermentation with Glucose and Xylose by Immobilized Yeasts in Two Cascade Fixed Beds

CIESC Journal

Continuous Ethanol Production Through Fermentation with Glucose and Xylose by Immobilized Yeasts in Two Cascade Fixed Beds

邓旭¹; 岑沛霖²

¹ Department of Chemical Engineering, Xiamen University, Xiamen 361005, China
² Department of Chemical Engineering, Zhejiang University, Hangzhou 310027, China

收稿日期:1996-09-23 修回日期:1900-01-01 出版日期:1998-03-28 发布日期:1998-03-28
通讯作者: 邓旭

Continuous Ethanol Production Through Fermentation with Glucose and Xylose by Immobilized Yeasts in Two Cascade Fixed Beds

Deng Xu¹; Cen Peilin²

¹ Department of Chemical Engineering, Xiamen University, Xiamen 361005, China
² Department of Chemical Engineering, Zhejiang University, Hangzhou 310027, China

Received:1996-09-23 Revised:1900-01-01 Online:1998-03-28 Published:1998-03-28
Contact: Deng Xu

摘要/Abstract

摘要： Glucose and xylose were used as mixed carbon sources for ethanol production by a cascade immobilized-cell reactor.In the
first fixed-bed reactor, immobilized S.cerevisiae was used to metabolize the glucose anaerobically, and in the second fixed-
bed column, the immobilized Pichia stipitis was applied to metabolize xylose aerobically.The effect of xylose on the glucose
uptake by S. cerevisiae and the effect of ethanol on the xylose metabolization by P.stipitis were studied.A mathematical odel
taking both the substrate and xylose inhibition into consideration was suggested for the description of the two-substrate
fermentation process, and a total effectiveness factor ηs in the model was derived to take into account the mass transfer
resistances of intra-particles and liquid films.Calculated results are in fair agreement with the experimental data.

关键词: ethanol;continuous fermentation;mixed substrate;kinetic model

Abstract: Glucose and xylose were used as mixed carbon sources for ethanol production by a cascade immobilized-cell reactor.In the
first fixed-bed reactor, immobilized S.cerevisiae was used to metabolize the glucose anaerobically, and in the second fixed-
bed column, the immobilized Pichia stipitis was applied to metabolize xylose aerobically.The effect of xylose on the glucose
uptake by S. cerevisiae and the effect of ethanol on the xylose metabolization by P.stipitis were studied.A mathematical odel
taking both the substrate and xylose inhibition into consideration was suggested for the description of the two-substrate
fermentation process, and a total effectiveness factor ηs in the model was derived to take into account the mass transfer
resistances of intra-particles and liquid films.Calculated results are in fair agreement with the experimental data.

Key words: ethanol, continuous fermentation, mixed substrate, kinetic model

邓旭, 岑沛霖. Continuous Ethanol Production Through Fermentation with Glucose and Xylose by Immobilized Yeasts in Two Cascade Fixed Beds[J]. CIESC Journal.

Deng Xu, Cen Peilin. Continuous Ethanol Production Through Fermentation with Glucose and Xylose by Immobilized Yeasts in Two Cascade Fixed Beds[J]. .

Continuous Ethanol Production Through Fermentation with Glucose and Xylose by Immobilized Yeasts in Two Cascade Fixed Beds

Continuous Ethanol Production Through Fermentation with Glucose and Xylose by Immobilized Yeasts in Two Cascade Fixed Beds

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