a mixture of gases (CH4, co and CO2 respectively, methane, carbon monoxide and carbon dioxide), net (vegoils) and solid (charcoal);gasification: as well as the pyrolysis, biomass also is heated in the absence of oxygen, generating as final product a gas fire. This gas can still be filtered to remove some components chemical waste. The basic difference in relation to the pyrolysis is the fact the gasification require less temperature and result only gas;combustion: here the burning of biomass is abundant high temperatures in the presence of oxygen, producing steam high pressure. This steam is usually used in boilers or to move turbines. Is one of the most common ways today and its energy efficiency is in range from 20 to 25%;co-firing: this practice proposes replacing part of the coal used in a termoeletricas biomass. This way, reduces significantly the emission of pollutants (mainly sulphur dioxide and oxides of nitrogen, responsible for acid rain). The performance of biomass is between 30 and 37%, so it is an option and attractive and economic today.BiodieselBiodiesel is derived from renewable organic lipids, such as vegetable oils and fats, for use in engines ignition (diesel). Is produced by Transesterification and is also a fuel biodegradable alternative to diesel oil, generated from renewable energy sources, free of sulphur in its composition. Is obtained from vegetable oils such as sunflower, rapeseed, colza grain, cotton, castor tree, soy.BioethanolBioethanol is obtaining the ethanol by biomass to be used directly as fuel or join esters of vegetable oil and form a fuel, this process is the name Transesterification. Ethanol is a colourless alcohol, volatile flammable and totally soluble in water, derived from cane sugar, maize, grapes, beet or other cereals, produced by fermenting sucrose. Commercially, is known as ethyl alcohol and its molecular formula is c2h5oh or c2h6o.Ethanol is now a product of several applications on the market, widely used as fuel automotive in the form hidratada, blended gasoline. Also has applications in products such as perfumes, desodorantes, medicines, cleaners home and alcoholic beverages. Outstanding as a major energy sources in Brazil, in addition to being renewable and clean. Is the largest world producer of ethanol, which, when used as fuel in cars, represents an alternative to gasoline oil. Included in the production of ethanol State of Sao Paulo and Parana responding together for almost 90% of total harvest produced. In addition, Brazil is leading the world production of cane sugar (main raw ethanol), an industry that handles several billion dollars per year. This represents a less dependent Brazil to oil.Environmental impact and advantagesBiofuels are presented as alternatives to fossil fuels are renewable energy. The renewable energies are considered when their production exceeds their consumption. Rather clearly with fossil fuels. Thus, biofuel is any fuel biological origin other than fossil.In the French language, is made a difference between the words "biofuels and agrocarburante. Agrocarburantes are fuels for motor cars and other) obtained from agricultural products produced for this purpose.There are also biofuels produced from oils commonly used.Environmental balance and socialThe environmental balance depends on biofuels industry considered (alcohol, pure vegetable oil, biodiesel