Biogas is a renewable fuel produced by the breakdown of organic matter equivalent to meals scraps and animal waste. It can be utilized in quite a lot of ways together with as vehicle fuel and for heating and electricity generation. Read on to study more.
What is biogas? How is biogas produced?
Biogas is an environmentally-pleasant, renewable energy source.
It’s produced when organic matter, reminiscent of meals or animal waste, is broken down by microorganisms within the absence of oxygen, in a process called anaerobic digestion. For this to take place, the waste material needs to be enclosed in an atmosphere where there is no oxygen.
It could happen naturally or as part of an industrial process to intentionally create biogas as a fuel.
What kind of waste can be utilized to produce biogas?
A wide variety of waste materials breaks down into biogas, including animal manure, municipal rubbish/ waste, plant material, meals waste or sewage.
Which gases does biogas include?
Biogas consists primarily of methane and carbon dioxide. It might additionally embrace small quantities of hydrogen sulphide, siloxanes and some moisture. The relative quantities of those differ relying on the type of waste concerned in the production of the ensuing biogas.
What can biogas be used for?
To fuel vehicles – if biogas is compressed it can be utilized as a vehicle fuel.
As a replacement for natural gas – if biogas is cleaned up and upgraded to natural gas standards, it’s then known as biomethane and can be used in the same way to methane; this can embody for cooking and heating.
Biogas: 6 fascinating facts
1. Biogas is a gas of many names
Biogas is most commonly also known as biomethane. It’s additionally generally called marsh gas, sewer gas, compost gas and swamp gas in the US.
Biogas is a naturally occurring and renewable supply of energy, ensuing from the breakdown of natural matter. Biogas is not to be confused with ‘natural’ gas, which is a non-renewable source of power.
2. Biogas and biomass: relatedities and variations
Biomass and biogas are both biofuels; they can be burnt to produce energy. However biomass is the stable, natural material. Biomass has been used as an energy supply since humans first discovered fire and burnt wood, plants and animal dung to create energy.
At this time, many energy stations run by burning a biomass of compressed wood pellets – a by-product of timber and furniture-making. By replacing fossil-fuel coal, biomass enables renewable electricity to be produced.
3. Biogas just isn’t a new discovery
The anaerobic process of decomposition (or fermentation) of natural matter has been happening in nature for millions of years, even before fossil fuels, and continues to occur all around us in the natural world. In the present day’s industrial conversion of natural waste into energy in biogas plants is simply fast-forwarding nature’s ability to recycle its useful resources.
The first human use of biogas is believed up to now back to 3,000BC within the Center East, when the Assyrians used biogas to heat their baths.
A 17th century chemist, Jan Baptist van Helmont, discovered that flammable gases might come from decaying organic matter. Van Helmont can be responsible for bringing the word ‘gas’, from the Greek word chaos, into the science vocabulary.
The first giant anaerobic digestion plant dates back to 1859 in a leper colony in Bombay.
An inventive Victorian engineer, John Webb from Birmingham, created the Sewage Lamp, which transformed sewage into biogas to light road lamps. The only remaining Webb Sewer Lamp in London is now just off The Strand in Carting Lane – or as some wags would have it, Farting Lane.
Anaerobic digestion was used as a method to treat municipal wastewater, earlier than chemical treatments. Within the creating world the anaerobic process is still recognised as an inexpensive, natural different to chemical compounds and the reduction of dysentery bacteria.
And let’s not neglect that in Mad Max Beyond Thunderdome the submit-apocalyptic settlement Bartertown, run by Tina Turner’s terrifying Aunty Entity, is powered by a pig-farm biogas system with biogas used to power the desert-chasing vehicles.
4. Right this moment China leads the world in using biogas
China has the largest number of biogas plants, with an estimated 50 million households utilizing biogas. These are mostly in rural areas and small-scale residence and village plants.
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