Biology B3 4.7 Biogas.

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What is biogas mainly made of?
Methane.
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How is biogas made?
It is made by the anaerobic fermentation of a wide range of waste substances and plant material containing carbohydrate.
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On what scale can biogas be made?
It can be made on a large or small scale.
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When making biogas what happens to plants and any waste material containing carbohydrate (cattle dung etc)
It can be broken down in biogas generators.
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What do biogas generator provide in the process of making biogas?
The ideal conditions for bacteria to reproduce and ferment the carbohydrates.
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How do biogas generators provide the ideal conditions for biogas production?
They maintain a suitable temperature in oxygen-free conditions, some generators are designed to mix the contents. Generators are either buried in the ground for insulation or have insulating jackets.
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What waste do large scale commercial generators use?
Waste from sugar factories or sewage works.
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What is the gas produced (biogas) used for?
Fuel and provides energy for heating etc.
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What does t mean if the gas mixture (biogas) has more methane in the mix?
The quality of biogas is more.
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How is biogas produced?
By fermentation, the bacteria respire anaerobically using waste carbohydrate.
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**LOOK UP DIAGRAMS ETC**
**LOOK UP***
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Card 2

Front

How is biogas made?

Back

It is made by the anaerobic fermentation of a wide range of waste substances and plant material containing carbohydrate.

Card 3

Front

On what scale can biogas be made?

Back

Preview of the front of card 3

Card 4

Front

When making biogas what happens to plants and any waste material containing carbohydrate (cattle dung etc)

Back

Preview of the front of card 4

Card 5

Front

What do biogas generator provide in the process of making biogas?

Back

Preview of the front of card 5
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