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Gas Energy Solution
Agricultural Biogas

2017-06-16

Agricultural Biogas

The farming industry offers a range of potential applications for agricultural biogas systems. Arable land can be used to grow crops which are fed into dedicated digestion systems. Alternatively waste products from the farm can be harnessed to provide renewable energy. Agricultural digestion systems are typically sized between 0.5 and 3.0MW electrical output. The heat produced by the engines is typically used in a cogeneration/ combined heat and power (CHP) configuration with heat from the engine cooling systems used to warm the digesters and pasteurise input materials. Additional heat is available from the engines to be used for local heat users such as grain driers or for district heating.

Benefits of Agricultural Biogas

— Production of renewable power

— Avoidance of greenhouse gas emissions
— Disposal of waste

— Economical onsite power and reduced transmission losses
— Production of soil improver

— Cost effective, proven technology
— Helps isolate farmer from crop price fluctuations


Benefits of Agricultural Biogas


Biogas is a renewable fuel that is created by the anaerobic decomposition of biodegradable organic materials. As a metabolic product of the participating methanogens and acidogenic bacteria, the prerequisites for its production are a lack of oxygen, a pH value from 6.5 to 7.5 and a constant temperature of 35-45 °C (mesophillic) or 45-55 °C (thermophilic). The digestion period or retention time is typically between 10 and 30 days depending upon the type of digestion employed. The anaerobic digestion systems of today operate largely within the mesophilic temperature range.


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