TECHNOLOGY FOCUS - BIOLOGY - Preferred Components: The enzyme comprises a complex cocktail blend of cellulases, a high level of beta -glucosidases, and hemicellulases. The organism is a genetically modified Saccharomyces cerevisiae yeast.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The chemical comprises at least one of a sulfuric acid, a phosphoric acid, and a nitric acid.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The integrating processes further comprise: (a) recovering energy by releasing steam from the pretreatment process and sending the steam to be used in the processes mentioned above in the existing plant; (b) redirecting cook water supply from the processes in the existing plant to be used in the pretreatment process; (c) recycling condensate from the pretreatment process to a pretreatment water tank; (d) fermenting the starch from the grain combined with cellulosic beer in the existing plant to beer, (d1) distilling the beer to separate alcohol from solids and liquids, (d2) removing moisture from the alcohol and (d3) adding a denaturant to the alcohol to produce biofuel; and (e) the steps (d) and (d1) as above per se, and separating the solids and the liquids into wet cake and centrate, and producing distillers grains. The temperature in process-I is raised to 355-478 K. The hydrolyzing process converts cellulose and hemicellulose to sugars in the low-solids slurry, at least 80% of the cellulose to glucose, and converts at least 70% of the hemicellulose to monomeric components. The hydrolyzing and fermenting processes occur in less than 60 hours. The process-I further comprises adding a base in a flash tank, after the reaction zone to neutralize the low-solids slurry, where the base comprises at least one of anhydrous ammonia, sodium hydroxide, potassium hydroxide, calcium hydroxide, calcium oxide, waste caustic, and aqueous ammonia; distilling the cellulosic beer to separate alcohol from solids and liquids, removing moisture from the alcohol, and adding a denaturant to the alcohol to produce cellulosic biofuel. The hydrolyzing and fermenting processes comprise at least one of a hybrid hydrolysis and fermentation, separate hydrolysis and fermentation, or simultaneous saccharification and fermentation. The base quantity and type are determined by a requirement for nitrogen in the fermenting. The water is obtained from an evaporator condensate, a pretreatment condensate, steam from a flash tank or steam from side stripper bottoms. EXAMPLE - No suitable example given.