- published: 18 Dec 2014
- views: 199433
Biogas typically refers to a gas produced by the biological breakdown of organic matter in the absence of oxygen. Organic waste such as dead plant and animal material, animal feces, and kitchen waste can be converted into a gaseous fuel called biogas. Biogas originates from biogenic material and is a type of biofuel.
Biogas is produced by the anaerobic digestion or fermentation of biodegradable materials such as biomass, manure, sewage, municipal waste, green waste, plant material, and crops. Biogas comprises primarily methane (CH4) and carbon dioxide (CO2) and may have small amounts of hydrogen sulphide (H2S), moisture and siloxanes.
The gases methane, hydrogen, and carbon monoxide (CO) can be combusted or oxidized with oxygen. This energy release allows biogas to be used as a fuel. Biogas can be used as a fuel in any country for any heating purpose, such as cooking. It can also be used in anaerobic digesters where it is typically used in a gas engine to convert the energy in the gas into electricity and heat. Biogas can be compressed, much like natural gas, and used to power motor vehicles. In the UK, for example, biogas is estimated to have the potential to replace around 17% of vehicle fuel. Biogas is a renewable fuel, so it qualifies for renewable energy subsidies in some parts of the world. Biogas can also be cleaned and upgraded to natural gas standards when it becomes biomethane.
I.O.I.O.
You know I love getting up in the morning
When the sun first strikes the trees
All the morning birds that sing above
Still bring back memories
Of a girl who stood beside me
When the rights I did were wrong
But she went back down the river
Just when I thought I could be strong
When I thought I could be strong, so I sing
I.O.I.O.
She never told me why she left me
But the letter said goodbye
Now my mornings are for wond'ring
And my nights to reason why
Why a stranger comes to steal the love
Of a girl I had to hold
But she went back down the river
Just when I thought I could be strong
When I thought I could be strong, so I sing