INTEGRATED CELLULOSIC ETHANOL PRODUCTION PROCESS

摘要

Integrated cellulosic ethanol and corn ethanol production processes reduce the capital and operating costs of cellulosic ethanol production through high levels of integration with pre-existing corn ethanol processing equipment. The processes comprise separating corn starch from other, non-fermentable corn components (e.g. germ, protein, fiber, etc.) and cofermenting sugars derived from the corn starch in the presence of a pretreated cellulose feed. The cofermentation can be carried out using one or more hemicellulose sugar utilizing yeast strains, for example, such as one or more yeast strains.