Renewable energies are those that arise on an ongoing basis and are inexhaustible on a human scale: solar, wind, hydro, biomass and geothermal. Renewable energies are sources of energy supply which respect the environment.
They supply sources that respect the environment. That does not mean that do not cause negative effects on the environment, but they are infinitely smaller when compared with the environmental impacts of conventional energy (fossil fuels: oil, gas and coal, nuclear energy, etc.). And are almost always reversible.
According to a study on "Environmental Impacts of the Production of Electricity" the environmental impact on the generation of electricity from conventional energy is 31 times higher than that of renewable energy.
As a major environmental advantages, we can not stress the emission of polluting gases such as those resulting from the combustion of fossil fuels responsible for global warming (CO2) emissions and acid rain (SO2 and NOx) and non-hazardous waste generation of hard treatment and posed a threat for generations to the environment as the radioactive waste associated with the use of nuclear energy.
Other advantages to draw from renewable energy is its contribution to regional balance, and that can be installed in rural and remote areas, and reduced dependence on external supplies, and that renewable energies are indigenous, while fossil fuels are only found in a limited number of countries. |
 Bioethanol is an alcohol derived from agricultural crops such as maize, sorghum, potato, wheat, sugar cane, and even biomass. The alcohol is used as fuel, remain a source of renewable energy.
Bioethanol, also known as biomass ethanol, an alcohol that is obtained from corn, sorghum, sugar cane or b… |
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 They are products of plant and animal that can be used to optimize the fertility of soil and physical environment.
The manure produced by animals, if well worked, is a good contribution to the conservation of the environment, since their use avoids the use of chemical fertilizers.
Livestock prod… |
 It's called well to any type of fuel that comes from biomass, that is, recently living organisms or their metabolic wastes, which would achieve the replacement of traditional fuels.
Biofuels are fuels of biological origin derived from renewable way from organic debris. These usually come from organ… |
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