Higher quantities of biogas can be produced when the wastewater is co-digested with other residuals from the dairy industry, sugar industry, or brewery industry. During the process, the micro-organisms transform biomass waste into biogas (mainly methane and carbon dioxide) and digestate. These plants can be fed with energy crops such as maize silage or biodegradable wastes including sewage sludge and food waste. It can be produced using anaerobic digesters (air-tight tanks with different configurations). Biogas can refer to gas produced naturally or industrially.īiogas production in rural Germany Biogas plants Ī biogas plant is the name often given to an anaerobic digester that treats farm wastes or energy crops. From a carbon perspective, as much carbon dioxide is absorbed from the atmosphere in the growth of the primary bio-resource as is released, when the material is ultimately converted to energy.īiogas is produced by microorganisms, such as methanogens and sulfate-reducing bacteria, performing anaerobic respiration. It then regrows in a continually repeating cycle. As the organic material grows, it is converted and used. Biogas is considered to be a renewable resource because its production-and-use cycle is continuous, and it generates no net carbon dioxide.

Biogas can be cleaned and upgraded to natural gas standards, when it becomes bio-methane. It qualifies for renewable energy subsidies in some parts of the world. In the United Kingdom, for example, biogas is estimated to have the potential to replace around 17% of vehicle fuel. īiogas can be compressed after removal of Carbon dioxide, the same way as natural gas is compressed to CNG, and used to power motor vehicles. It can also be used in a gas engine to convert the energy in the gas into electricity and heat. This energy release allows biogas to be used as a fuel it can be used in fuel cells and for any heating purpose, such as cooking.

The gases methane, hydrogen, and carbon monoxide ( CO) can be combusted or oxidized with oxygen. Ģ) and may have small amounts of hydrogen sulfide ( HĢS), moisture and siloxanes. īiogas is produced by anaerobic digestion with anaerobic organisms or methanogen inside an anaerobic digester, biodigester or a bioreactor. Biogas is a mixture of gases, primarily consisting of methane and carbon dioxide, produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste or food waste.

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