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What is biogas? - PowerPoint PPT Presentation


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What is biogas?. A mixture of methane and carbon dioxide. CH 4. CO 2. Methane or ‘swamp gas’, produced naturally in swampy ponds. What is this?. What is it used for?. Biogas is a fuel used as an energy source for light, heat or movement. ?.

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Presentation Transcript
slide1

What is biogas?

  • A mixture of methane and carbon dioxide

CH4

CO2

  • Methane or ‘swamp gas’, produced naturally in swampy ponds

What is this?

slide2

What is it used for?

  • Biogas is a fuel used as an energy source for light, heat or movement

?

slide3

Leftover food from houses, shops, restaurants and factories

Leftover straw and crops from farming

Cow, sheep and chicken manure

Sewage

Leftover meat and blood from abattoirs

How is it made?

Biogas is produced by the breakdown of organic waste by bacteria without oxygen (anaerobic digestion or fermentation).

What types of organic waste could be turned in biogas?

slide4

How is it made?

Biogas is made by fermenting organic waste in a biogas digester.

Digesters vary from small household systems…

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It can also be captured from landfill sites where organic waste has been rotting under the ground