Biogas

Biogas typically refers to a mixture of different biogas produced by the breakdown of organic matter in the absence of oxygen.

Biogas is produced by anaerobic digestion with anaerobic bacteria or fermentation of biodegradable materials such as manure, sewage, municipal waste, green waste, plant material , and crops. It is primarily methane (CH4) and carbon dioxide (CO2) and may have small amounts of hydrogen sulfide (H2S), moisture and siloxane.

Biogas can be compressed, the same way natural gas is compressed to CNG, and used as a low carbon transportation fuel. Biogas can be cleaned and upgraded to natural gas standards when it becomes bio methane.

Typical composition of biogas
Compond
Formula
%
Methane
CH4
50-75
Carbon dioxide
CO2
25-50

Nitrogen
N2
0-10
Hydrogen
H2
0-1
Hydrogen Sulphide
H2S
0-3
Oxygen
O2
0-0

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