Biogas

Fermentation process in natural and organic substances to generate energy using a fuel that is both efficient and environmentally sound: biogas. The mixture of methane and carbon dioxide provides a clean alternative to fossil fuels with energy plant as a renewable energy source.

Esquema del proceso de creación del biogás

Using organic waste to generate biogas and energy relieves the burden on the environment two-fold. The organic remainders, such as waste, sewage or the excrements that are generated, are generally seen as a problem to get rid of. But this, instead of being a problem, can be turned into an ecological way of getting energy.

This idea has been carrying out for years with the so-called biogas. It is a mixture of gas that arises thanks to anaerobic micro organisms that split the organic matter in the absence of oxygen.
The bacteria consume the carbon and nitrogen and, as a result, produce a mixture of gases consisting of 70% methane (CH4), 20% carbon dioxide (CO2) and some carbon monoxide (CO) and sulfur dioxide (SO2).

Planta de cogeneración con biogás

Biogas can be naturally generated-in this sense the natural gas isn't more than a type of biogas produced by the same process, derived from organic residues that where left buried- or it can also be artificially generated, in small devices designed to eliminate organic originated contamination and produce energy. Theoretically, an appropriate technology can use any organic waste to create biogas

The production of biogas by anaerobic decomposition is regarded as useful for treating biodegradable waste because it produces a valuable fuel and generate an effluent that can be applied as soil conditioner or compost.

The biogas is currently used, for the most part, in a stationary way in cogeneration plants, with a very high efficiency to generate electricity and heat. The electricity produced can be transmitted to the public grid or used for the supply of independent energy for commercial and industrial areas or rural residential areas of remote network. The surplus heat can be used with groups postponed for additional electricity generation, but also for heating, drying or for equipment refrigeration. If there is no heat sink in the plant site, the feeding of biogas can be an attractive option in the existing natural gas networks. This decoupling of production and use obtains new possibilities for efficient electricity production in cogeneration and for the use of biogas as biofuel.

When mounting the biogas generators we have two alternatives: