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In 2010 there were 5,905 biogas plants operating throughout the country: Lower Saxony, Bavaria, and the eastern federal states are the main regions. [74] Most of these plants are employed as power plants. Usually the biogas plants are directly connected with a CHP which produces electric power by burning the bio methane.
Biological methanation takes place in a separate methanation plant. The gas is completely converted into methane before the infeed into the gas grid. The carbon dioxide, produced in a gas processing system, is converted into methane in a separate methanation plant, by adding hydrogen and can then be fed into the gas grid.
Biogas plant model diagram. A bio-energy village is a regionally oriented concept for the use of renewable energy sources in rural areas.The system uses biomass from local agriculture and forestry in a biogas powerplant to meet the complete energy requirements of a village, such as electricity and district heating.
Methanogenesis can also be beneficially exploited, to treat organic waste, to produce useful compounds, and the methane can be collected and used as biogas, a fuel. [21] It is the primary pathway whereby most organic matter disposed of via landfill is broken down. [ 22 ]
Design of a dry/solid-state anaerobic digestion (AD) biogas plant. High solids (dry) digesters are designed to process materials with a solids content between 25 and 40%. Unlike wet digesters that process pumpable slurries, high solids (dry – stackable substrate) digesters are designed to process solid substrates without the addition of water.
The Alpena biorefinery plant in the USA. A biorefinery is a refinery that converts biomass to energy and other beneficial byproducts (such as chemicals). The International Energy Agency Bioenergy Task 42 defined biorefining as "the sustainable processing of biomass into a spectrum of bio-based products (food, feed, chemicals, materials) and bioenergy (biofuels, power and/or heat)". [1]
The 13.4-megawatt cogeneration plant could be built within the next few years. ... Sacramento Area Sewer District enters $140M contract to build biogas energy plant near Elk Grove. Marcus D. Smith.
Biogas can be made from substances like agricultural waste and sewage. [ 92 ] [ 93 ] The bio-digester uses a process called anaerobic digestion to produce biogas. Anaerobic digestion uses a chemical process to break down organic matter with the use of microorganisms in the absence of oxygen to produce biogas. [ 94 ]