chapter  6
Bioethanol from Biomass: Production of Ethanol from Molasses
Pages 14

In recent years, much attention has been paid to the conversion of biomass into fuel ethanol, apparently the cleanest liquid fuel alternative to the fossil fuels. Agronomic residues such as corn stover (corn cobs and stalks), sugarcane waste, wheat, or rice straw, forestry and paper mill wastes, and dedicated energy crops are the major biomass resources considered for the production of fuel ethanol. Molasses, one of the renewable biomass resources, a main by-product of the sugar industry, represents a major fermentation feedstock for commercial ethanol production. Signicant advances have been made in the last two decades in developing the technology for ethanol fermentation from molasses. This chapter gives an overview of the status of

Abstract .................................................................................................................... 73 6.1 Introduction .................................................................................................... 74 6.2 Types of Molasses .......................................................................................... 74 6.3 General Process for the Production of Ethanol from Molasses ..................... 75 6.4 Fermentation of Molasses by Saccharomyces spp. ........................................ 76

6.4.1 Ethanol Fermentation by the Cell Recycle System ............................. 78 6.5 Fermentation of Molasses Using the Thermotolerant Yeast K. marxianus ... 79

6.5.1 Strategies for the Improvement of the Production of Ethanol by K. marxianus .......................................................................................80