Agricultural wastes represent 5% of the volume of environmental pollutants. Egypt has an abundance of agricultural wastes, which still have negative effects on the environment and does not make use of them and that can bring additional income to the farmer and at the same time can be faded damage these residues utilizing it as one of the energy sources renewable economic. Liquid biofuels include bioalcohols, such as ethanol and butanol, and biodiesel.
Ethanol is the most important liquid biofuel of today. Bioalcohols are manufactured in fermentation processes, in which microbial biocatalysts, yeasts or bacteria, convert sugars to alcohols. The ethanol that is used today is mainly manufactured from lignocelluloses materials.
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