Biogas Presentation.ppt - Tusk
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Transcript of Biogas Presentation.ppt - Tusk
‘Someone somewhere has found a solution’
The PACE project was started to help organisations in one part of Africa get the benefits from the ideas and
experiences of people working in other parts. By sharing ideas we don’t have to start from zero, we
can learn from other people’s experiences and share our own findings with them, so everyone benefits.
The film we’re watching today has been shared with people in 22 countries.
‘GOOD’ or ‘BAD’? Sort these FUELS from BEST to WORST. There’s no right
answer so think about why you’ve chosen that order.
Methane
Coal
The North Wind
A cowpat
A banana skin
A tree
Sunshine
A waterfall
Your legs
Uranium
GOOD
BAD
If you were a farmer in Tanzania, would you install a biogas system?
?
BENEFITS TO MY FAMILY PROBLEMS TO OVERCOME
Activity 1
Used for lighting and……………………………………………………………………………………………………………………………………………………………………
How is it made:……………….. …………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
Also known as… …………………………………………(A mixture of gases)
Benefits:……………………………………………………………………………………………………..………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
Biogas
Find out more…
What is it made from? …………………………………………………… ……………………………………………………………………………………………………………………………………………………………………………………………………………………
What is biogas?• A mixture of methane and carbon dioxide
CH4
CO2 • 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
?
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?
Biogas is made by fermenting organic waste in a biogas digester.
Digesters vary from small household systems…
How is it made?
Holsworthy Biogas Plant, Devon
….to large commercial plants of several thousand cubic metres
• It can also be captured from landfill sites where organic waste has been rotting under the ground
CREATE A SENTENCE USING THE KEYWORDS TO COMPARE THE TWO CASE STUDIES
KEYWORDS
Electricity generators at Holsworthy
Katakwa’s biogas stove
environmental
electricity
methane manure
biogasAnaerobic digestion
greenhouse gases
organic waste pollution