Biomass and renewable energy

The intensive agriculture, animal husbandry in particular, produces a large quantity of wastes such as slurry and manure that, when they exceed the soil reception capacity, these residues assume the connotation of polluting agents..

They are also one of the renewable energy sources for the production of so-called bio-energy. In addition, the industrial processes of transformation agricultural materials applied in the production of food also generate a huge amount of organic wastes. Finally, in a non-productive contexts, a high amount of organic wastes are produced: a typical example is the daily production of organic solid waste in our residences, which are rich in organic compounds.
Actually, the production of energy and materials from renewable sources are more and more necessary, do not forgetting therefore that is clear the importance of re-use of these materials.
Organic wastes or biomasses, if correctly used, are an excellent source of fertilizer, used to provide nutrients to the plants as well the increase of the soil fertility and a consequently reduction in the use of synthetic fertilizers.

This term refers to different sources of renewable energy: biofuels such as bioethanol and biodiesel, and the most common biogas, characterized by a high content of methane, widely used in the generation of electricity.
Some particular types of biomass, fruit and vegetables residues for example, are very rich in vitamins, antioxidants and fiber, their reuse is possible in the pharmaceutical industry, for instance, it the production of cosmetics, in the manufacture of nutritional supplements, in the industry of plastic, surfactants and lubricants of vegetable origin, among others.
This modern and sustainable approach, called as zero waste, is able to use of a refuse material as raw materials for another production. In this way, that one which before was a problem becomes a opportunity.

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