Chemistry: Alternative Fuels


	Alternative Fuels
	Advantages Biodiesel less harmfull to wildlife if spillled than crude oil Biodiesel burns more cleanly in an engine: reducing particulates emitted+ makes little sulfur dioxide. Biodiesel will become cheaper when crude iol runs out (their prices will rise). Carbon neutral crops: crops absorb as much carbon dioxide as they give off when burned. But still do give off a little CO	Disadvantages Still produce carbon dioxide: fertilizing/ harvesting; processing biofuel; transportation. Use farmland: famers turn food land into fuel land -> famine in poor countries as food prices will rise. Forests may be used to grow biofuels -> cant absorb as much carbon dioxide Habitats destroyed for biofuel crops e.g tropical forests.
	Evaluation

Biodiesel less harmfull to wildlife if spillled than crude oil
Biodiesel burns more cleanly in an engine: reducing particulates emitted+ makes little sulfur dioxide.
Biodiesel will become cheaper when crude iol runs out (their prices will rise).
Carbon neutral crops: crops absorb as much carbon dioxide as they give off when burned. But still do give off a little CO

Still produce carbon dioxide: fertilizing/ harvesting; processing biofuel; transportation.
Use farmland: famers turn food land into fuel land
-> famine in poor countries as food prices will rise.
Forests may be used to grow biofuels -> cant absorb as much carbon dioxide
Habitats destroyed for biofuel crops e.g tropical forests.

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