Abstract

English

Highlights

  • The oil crisis and serious environmental problems related to fossil fuels have caused the world to turn more attention toward biofuels production, especially ethanol fermentation from biomass

  • Almost all ethanol fermentation kinetic models are based on the Monod equation

  • Through batch fermentation experiment with different initial glucose concentrations and comparison with existing model, this model has the advantage of high precision and few parameters

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Summary

Introduction

The oil crisis and serious environmental problems related to fossil fuels have caused the world to turn more attention toward biofuels production, especially ethanol fermentation from biomass. An appropriate kinetic model of ethanol fermentation would be a powerful instrument for fermentation efficiency increase and process optimization. The well-known Monod equation has been widely applied and modified to describe different fermentation processes.[1,2,3,4,5,6,7] Unlike the Michaelis-Menten equation describing the mechanism of enzyme catalysis, the Monod equation is purely empirical with no mechanistic basis and hardly meets functional requirements to support large-scale production, process scale-up and optimization. A simple kinetic model of ethanol fermentation is proposed, which provides a new perspective for kinetics research of fermentation

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