A Mathematical Model for Simultaneous Saccharification and Co-fermentation (SSCF) of C6 and C5 Sugars

Chin.J.Chem.Eng. ›› 2011, Vol. 19 ›› Issue (2): 185-191.

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A Mathematical Model for Simultaneous Saccharification and Co-fermentation (SSCF) of C6 and C5 Sugars

Ricardo Morales-Rodriguez¹, Krist V. Gernaey², Anne S. Meyer³, Gürkan Sin¹

1. Computer Aided Process Engineering Center (CAPEC), Department of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark;
2. PROCESS, Department of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark;
3. BIOENG, Department of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark

Received:2010-06-25 Revised:2010-12-29 Online:2011-04-28 Published:2011-04-28
Supported by:
Supported by the Mexican National Council for Science and Technology (CONACyT# 118903);the Danish Research Council for Technology and Production Sciences (FTP# 274-07-0339)

A Mathematical Model for Simultaneous Saccharification and Co-fermentation (SSCF) of C6 and C5 Sugars

Ricardo Morales-Rodriguez¹, Krist V. Gernaey², Anne S. Meyer³, Gürkan Sin¹

1. Computer Aided Process Engineering Center (CAPEC), Department of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark;
2. PROCESS, Department of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark;
3. BIOENG, Department of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark

通讯作者: Gürkan Sin,E-mail:gsi@kt.dtu.dk
基金资助:
Supported by the Mexican National Council for Science and Technology (CONACyT# 118903);the Danish Research Council for Technology and Production Sciences (FTP# 274-07-0339)

Abstract

Abstract: Reliable production of biofuels and specifically bioethanol has attracted a significant amount of research recently.Within this context,this study deals with dynamic simulation of bioethanol production processes and in particular aims at developing a mathematical model for describing simultaneous saccharification and co-fermentation (SSCF) of C6 and C5 sugars.The model is constructed by combining existing mathematical models for enzymatic hydrolysis and co-fermentation.An inhibition of ethanol on cellulose conversion is introduced in order to increase the reliability.The mathematical model for the SSCF is verified by comparing the model predictions with experimental data obtained from the ethanol production based on kraft paper mill sludge.When fitting the model to the data,only the yield coefficients for glucose and xylose metabolism were fine-tuned,which were found to be 0.43 g·g^-1 (ethanol/glucose) and 0.35 g·g^-1 (ethanol/xylose) respectively.These promising validation results encourage further model application to evaluate different process configurations for lignocellulosic bioetha-nol technology.

Key words: bioethanol, dynamic modeling, simultaneous saccharification and co-fermentation

摘要： Reliable production of biofuels and specifically bioethanol has attracted a significant amount of research recently.Within this context,this study deals with dynamic simulation of bioethanol production processes and in particular aims at developing a mathematical model for describing simultaneous saccharification and co-fermentation (SSCF) of C6 and C5 sugars.The model is constructed by combining existing mathematical models for enzymatic hydrolysis and co-fermentation.An inhibition of ethanol on cellulose conversion is introduced in order to increase the reliability.The mathematical model for the SSCF is verified by comparing the model predictions with experimental data obtained from the ethanol production based on kraft paper mill sludge.When fitting the model to the data,only the yield coefficients for glucose and xylose metabolism were fine-tuned,which were found to be 0.43 g·g^-1 (ethanol/glucose) and 0.35 g·g^-1 (ethanol/xylose) respectively.These promising validation results encourage further model application to evaluate different process configurations for lignocellulosic bioetha-nol technology.

关键词: bioethanol, dynamic modeling, simultaneous saccharification and co-fermentation

Ricardo Morales-Rodriguez, Krist V. Gernaey, Anne S. Meyer, Gürkan Sin. A Mathematical Model for Simultaneous Saccharification and Co-fermentation (SSCF) of C6 and C5 Sugars[J]. Chin.J.Chem.Eng., 2011, 19(2): 185-191.

References

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A Mathematical Model for Simultaneous Saccharification and Co-fermentation (SSCF) of C6 and C5 Sugars

A Mathematical Model for Simultaneous Saccharification and Co-fermentation (SSCF) of C6 and C5 Sugars

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