The biomass and the household waste can (by a method of anaerobic digestion) be converted into biogas, which will then be converted into electrical and/or thermal energy. In the installations for stocking non-dangerous waste (generally known as tips) the capturing of biogas produced by the waste matter buried in the earth and the transformation of methane to carbon dioxide is regulated and obligatory. In the centers where waste is stocked, the biogas is captured by means of a shaft or of draining trenches, connected to a main collector and then taken to a flare stack, where the gas is burnt.
This biogas can be valuated in the form of energy and produce electricity and/or heat in installations built to do so. It is known then as the « valuation of biogas from waste-matter, by catchment ».

Working principle of anaerobic digestion

Principle of valuating biogas from waste-matter
Anaerobic digestion or the valuation of biogas by catchment allows communities or those who play a part in regional economics, to participate in the effort of developing clean energy and to create a system of waste management that is effective, conform to the new norms and at the same time ecological.
Of all the renewable energies, anaerobic digestion and the valuation of biogas offer definite advantages in terms of profitability :

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