Biofuels

Question 1

What are Biofuels?

Answer 1

A ‘greener’ alternative to fossil fuels.

They produce no net increase in Carbon Dioxide

Question 2

How is Ethanol made?

Answer 2

By bacteria and yeast

Question 3

What is the equivalent to anaerobic respiration regarding Biofuels/Ethanol?

Answer 3

Fermentation

Question 4

What is Biogas made out of?

Answer 4

70% Methane 30% Carbon Dioxide

Question 5

What is Biogas used for?

Answer 5

Heating, cooking, lighting, powering wind turbines

Question 6

List 3 features of Batch generators

Answer 6

1. They are manually loaded
2. Biogas is produced in smaller batches
3. They are less convenient

Question 7

List 3 features of Continuous generators

Answer 7

1. Waste is continuously fed in
2. Biogas is produced at a steady rate
3. It is expensive equipment