Biogas composition in anaerobic digestion;

Biogas composition food waste, manure, cow dung and slurry;

Biogas and its composition;

Biogas is a gas produced by the biological breakdown of organic ‎matter in the absence of oxygen. 

Biogas composition methane:

1.    Biogas originates from biogenic material and is a ‎type of biofuel;

2.    Biogas is produced by anaerobic digestion or fermentation of ‎biodegradable materials such as biomass, manures, sewage, municipal wastes, green ‎wastes, plant material, and energy crops;

3.    This type of gas comprises primarily ‎methane and carbon dioxide;

4.    Other types of gas generated by using of biomass are ‎wood gas, which is created by gasification of wood or other biomass;

5.    This type of ‎gas consists primarily of nitrogen, hydrogen, and carbon monoxide, with trace ‎amounts of methane;

6.    The gases methane, hydrogen and carbon monoxide can be ‎combusted or oxidized with oxygen;

7.    Air contains 21% oxygen.

Biogas composition and upgrading to biomethane:

1.    The energy release ‎allows biogas to be used as a fuel;

2.    Biogas can be used as a low-cost fuel in any ‎country of the world for any heating purpose, such as cooking or heating;

3.    It can also be used in modern ‎waste management facilities where it can be upgraded and used to run any type of heat engine, to ‎generate either mechanical or electrical power;

4.    Biogas can be compressed, much ‎like natural gas, and used to power motor vehicles, ‎formation of photochemical smog.

Biogas composition analysis:

1.    The main chemical composition of biogas is Methane CH4‎ from ‎50 to ‎‎75%;

2.    Carbon dioxide CO2‎ from ‎25 to 50%;

3.    Nitrogen N2 from ‎0 to 10%;

4.    Hydrogen H2‎ from ‎0 to 1%;

5.    Hydrogen sulfide H2S from ‎0 to 3%‎;

6.    Oxygen O2 to very small traces;

7.    The composition of biogas varies depending upon the origin of the ‎anaerobic digestion process.

Landfill biogas composition:

1.    Landfill gas typically has methane concentrations around 50%;

2.    Advanced waste treatment technologies ‎can produce biogas with 55 to 75% methane CH4 or higher using in site ‎purification techniques as produced;

3.    Biogas also contains water ‎vapor and the fractional water vapor volume is a function of biogas ‎temperature.

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