1. Projet 2011/2012 du LFA

2. Assessment constat
 A need still growing of energy Forecast
 The pollution
 The ecologic issue
Melting of polar ice Increase in temperature Increased levels of CO2
and glaciers
 The alternative : Biofuel
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What’s Biofuel ?
 Bioful is a liquid fuel produced from renewable biogical resources. It exists
three types of biofuel :
 Fuels based on vegetable oil taken from rapes or sunflowers
 Fuel based on alcohols such as ethanol ; they are obtained from cultures capable to ferment
to give an alcohol (beet, sugar cane…)
 Fuel based on methane content in biogas taken from treathed municipal and industrial waste
for exemple
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4. Exemple : the biogas ecosystem
Contributions Contributions
Compost
Energy
Manure
Contributions
Contributions
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5. Why Biofuel ?
Use Biofuels have issues :
 Ecological
 Economic
Why don’t we use more biofuels ?
 The weakness
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6. Why is it ecological ?
 Biofuls have a natural origin and reject less « co2 » in atmosphere tham
fossilfuel
 There production is based (except methane) on the cultivation of plants that
absorb « co2 »
 For the methane, the raw material is free, but the facilities are expensive
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7. Why is it economic ?
 The production of oil and alcohol is less expensive than petroleum’s
extraction
 It is renewable
 It’ll create new jobs overall
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8. The weakness ?
 The production price (around 0,45 to 0,55 per liter) is cheap, but we need to
add the retalling, transport and stockage
A generalized inventory of the life cycle phases of biofuel system
Greenhouse
gases (GHGs)
 The disparition of petroleum can create an intensive agriculture and the
tentation to use OGM
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