10.8. Biogas utilization
Biogas is mainly composed of methane and carbon dioxide, but also contains small amounts of hydrogen sulfide, ammonia, and traces of hydrogen, nitrogen, carbon monoxide, saturated or halogenated carbohydrates, and oxygen. Biogas is usually saturated with water vapor and may also contain particles and siloxanes. The energy content is determined by the methane content (1 kWh per m3 of biogas with 10% of methane).
The biogas can be used in as many applications as the natural gas (heating, combined heat and power systems, fuel cells). There may be different specifications for biogas to be used in different applications, especially when biogas is to be used in stationary appliances or to be fed to a pipeline grid. The biogas ...
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