Biogas production
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Temperature
30 degrees centigrade
You need
Anaerobic conditions and warmth
Anaerobic for
Bacteria, this makes process anaerobic fermentatiom
Underground
Insulation helps keep temperature warm
Types of gas
Methane which is useful also co2, water vapour, hydrogen, hydrogen sulphide
Overflow substance
Often a good fertiliser
Initially
Sharp rise in co2 before it drops and more methane is produced because some oxygen may be in the tank
Produced
Slurry
Biogas
Under pressure in tank,
Stuff
Waste food, plants, animal and human waste