The bacteria “feed” off the manure and, in the process, release biogas as a by-product. However, biogas also contains carbon dioxide and small amounts of hydrogen, hydrogen sulfide, nitrogen, and water vapor.Ī digester is a sealed vessel or container in which anaerobic digestion of organic matter occurs. The most important component in biogas is methane, a flammable gas that can be used in furnaces, for cooking, or even as an engine fuel. The organic matter could be any of a number of materials, but on the farm, it most often comprises animal manure or other agricultural waste. The economics of biogas production, however, are sometimes difficult to justify unless the accompanying environmental benefits and other by-products are considered.īiogas is a by-product of the anaerobic (without oxygen) breakdown of organic matter. nutrients are preserved and transformed into plant-available forms.reduction of emissions of greenhouse gases.provision of supplemental renewable energy.In modern livestock production systems, for example, the benefits of producing biogas are significant and include: On-farm biogas production has long been a topic of interest for farmers, with historical records of biogas production going back several hundreds of years. Intro | Feedstocks | Processing | Utilization
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