Corradi & Ghisolfi has “green” in its DNA, with a strong belief in the circular economy. The company is committed to building facilities that enhance waste, transforming it into clean energy and contributing to emission reduction. This philosophy reflects a concrete commitment to a more sustainable future.
Biogas, among renewable energy sources, is one of the greenest solutions. It combines waste disposal with the production of renewable energy, without impacting CO₂ emissions. This makes biogas an ideal choice for those seeking efficient and sustainable energy solutions.
Why Produce Biogas?
Choosing biogas means gaining significant advantages, not only in terms of energy, but also in agriculture and the environment. It is a technology that supports the transition to a more sustainable system, improving waste management and contributing to energy self-sufficiency, while at the same time reducing environmental impact.
Biogas and biomethane are two renewable and programmable energy sources. They are excellent examples of circular economy, because through the process of digestion, livestock effluents, by-products, and catch crops can be recovered and transformed into electricity, heat, and fuel for transportation. The process also produces digestate, a by-product that is reused as a high-quality soil amendment and fertilizer for organic and eco-sustainable agriculture.
Biogas is produced through bacterial fermentation in the absence of oxygen (anaerobic digestion) from livestock waste materials or low-energy biomass. It consists mainly of methane, carbon dioxide, and small amounts of hydrogen, hydrogen sulfide, ammonia, and water vapor. The gas composition depends on the ratio of elements in the organic substrates used (carbon, oxygen, hydrogen, nitrogen, sulfur), which may come from livestock farming, agro-industry, food waste, dedicated crops, and organic waste (OFMSW).
The biogas or biomethane produced can be immediately transformed into thermal energy, for direct combustion in boilers, electric energy, via combustion in engines powering electric generators, and combined energy (electric and thermal), used in specific cogeneration systems.
Biogas or biomethane, when treated and purified (upgraded) through desulfurization, CO₂ removal, water vapor removal, and hydrogen sulfide removal, becomes methane at 95–98% purity. It can then be used as vehicle fuel or injected into the natural gas distribution network, also suitable for domestic use. What remains after bacterial fermentation is digestate, a highly valuable substance used as a high-quality fertilizer.