Decay

  • Created by: Cat91
  • Created on: 12-06-18 18:05
How do microorganisms get energy?
They break down plant and animal material.
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What are the factors affecting decay?
Temperature, oxygen availability, water availability and, number of decay organisms.
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What does temp have to do with decay?
Enzymes can break down things faster when it's warmer.
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What does O2 have to do with decay?
Cause microorganisms need to breathe.
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What does water have to do with decay?
It's needed for certain biological processes.
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What does the amount of decay organisms have to do with decay?
Well, the more the faster.
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What is biogas made by?
Anaerobic decay of waste material.
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What is biogas made from?
Methane.
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What does anaerobically mean?
Without O2.
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What can be used to make biogas on a large scale?
Sewage and sugar factories.
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What is biogas made in?
A simple fermenter called a digester or generator.
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Do biogas generators need to be kept at a constant temp?
Yes.
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Why can't biogases be stored as a liquid?
Because they need to high a pressure.
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When does biogas have to be used?
Straight away.
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What are the 2 types of biogas generators?
Batch and continuous.
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What are biogas batch generators?
They're manually loaded up with waste then they make a batch of biogas before having to be cleaned.
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What are continuous biogas generators?
They make biomass all the time and waste is continuously fed in.
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What are the three things that a biogas generator needs?
An inlet for waste material to be put in, an outlet for the digested material to be removed through and, an outlet for the biogas.
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Other cards in this set

Card 2

Front

What are the factors affecting decay?

Back

Temperature, oxygen availability, water availability and, number of decay organisms.

Card 3

Front

What does temp have to do with decay?

Back

Preview of the front of card 3

Card 4

Front

What does O2 have to do with decay?

Back

Preview of the front of card 4

Card 5

Front

What does water have to do with decay?

Back

Preview of the front of card 5
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