1. What is biogas? A mixture of methane and carbon dioxide CH 4 CO 2 Methane or ‘swamp gas’, produced naturally in swampy ponds Methane or ‘swamp gas’, produced naturally in swampy ponds What is this?

2. What is it used for? Biogas is a fuel used as an energy source for light, heat or movement ?

3. Biogas is produced by the breakdown of organic waste by bacteria without oxygen (anaerobic digestion or fermentation). How is it made? Leftover food from houses, shops, restaurants and factories Cow, sheep and chicken manure Sewage Leftover meat and blood from abattoirs Leftover straw and crops from farming What types of organic waste could be turned in biogas?

4. Biogas is made by fermenting organic waste in a biogas digester. Digesters vary from small household systems… How is it made?

5. Holsworthy Biogas Plant, Devon ….to large commercial plants of several thousand cubic metres

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