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Flashcards in Environmental problems with crude oil Deck (7)
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1
Q

What happens when there is limited oxygen when burning fuels?

A

Incomplete combustion occurs and carbon monoxide is released.

2
Q

Sulfur dioxide causes….

A

Acid rain

3
Q

How can sulfur emissions be reduced and what is the problem with doing this?

A

Sulfur can be removed from fuels before they’re burnt but it’s more expensive.

4
Q

What is the problem with increasing carbon dioxide in the atmosphere?

A

Carbon dioxide causes climate change.

5
Q

How is ethanol made? State one pro and con of ethanol.

A

By fermentation of plants.
One of each of the below:
1)Pros: Carbon neutral, renewable
2)Cons: Isn’t widely available, engines must be converted before they’ll work with ethanol

6
Q

How is biodiesel made? State one pro and con of biodiesel.

A

Produced from vegetable oils.
One of each of the below:
1)Pros: Carbon neutral, less sulfur dioxide
2)Cons: Expensive, can’t produce enough to replace diesel

7
Q

How is hydrogen gas made?

A

From electrolysis of water
One of each of the below:
1)Pros: Very clean
2)Cons: Special and costly engine, isn’t widely available