Agriculture wastes / Biomass / Production of wastes
There are various feasons for the increased reliance on ethanol fuel. Some is due to the environmental reasons, given what is caused by the fossil fuel used in the different modes of transport from the harmful gaseous emissions that, affect the world's climate. A news hend in America and some European countries now is to reduce the dependence on fossil fuels, and to support the research aimed at finding new sources for renewable energy, and such as ethanol, which is extracted from biofermentation processes, and blended with gasoline as a fuel for automobile engines.The aim of this thesis was to study the way of ethanol production from lignocellulosic materials basically the agro wastes like rice straw and sugarcane bagasse. Those lignocellulosic materials are renewable biomasses that can be used as substrate in fermentation processes.The process of producing lignocellulosic ethanol was divided into four general steps namely, gfinding, pretreatment, hydrolysis and fermentation. The first step was the grinding in which the use of a blend with defined percentages of the various particle size is an important to minimize the particle size of the raw materials which facilate the action of the second step, ie. Pretreatment, as well as to enhance the hydrolysis of resultingfibers.