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Methane(CH4)- 50 - 75%, Carbon dioxide(CO2)- 25-50%, Nitrogen(N2)-0-10%, Hydrogen(H2)-0-1%, Hydrogen Sulfide(H2S)-0-3%, Oxygen(O2)-0-0%

In some cases, biogas contains siloxanes. These siloxanes are formed from the anaerobic decomposition of materials commonly found in soaps and detergents. During combustion of biogas containing siloxanes, silicon is released and can combine with free oxygen or various other elements in the combustion gas. Deposits are formed containing mostly silica (SiO2) or silicates (SixOy) and can also contain calcium, sulfur, zinc, phosphorus. Such white mineral deposits accumulate to a surface thickness of several millimeters and must be removed by chemical or mechanical means.

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The major constituent of biogas is methane, which typically makes up around 50-70% of the gas composition. Other components of biogas include carbon dioxide, water vapor, and small amounts of hydrogen sulfide, nitrogen, and oxygen.

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10mo ago
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Q: What is the major constituent of biogas?
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