Biogas production

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