Biogas production -

Biogas production
Qn. What is biogas?

Biogas is a methane that is produced from rotting organic matter.
Qn. What is biomass?
Biomass is the amount of living matter found in an area.
Qn. Identify the materials used to produce biogas.
a) Plant materials
Banana peelings
Sweet potato peelings
Seed residue
b) Animal materials
Cow dung
Urine
Chicken droppings
Human faeces
Goat droppings
Qn. How is biogas produced?
Biogas is produced by putting animal and plant materials in a proper sealed container called biogas digester which is buried underground.
Plant and animal waste in the biogas digester are broken down by anaerobic bacteria during the process of fermentation.
During fermentation, methane gas called biogas is produced.

Qn. State the uses of the parts of a biogas digester.
i) Inlet

The inlet is used for putting in plant and animal matter.
ii) Inlet pipe
The inlet pipe allows plant and animal matter into the digester.
iii) Outlet
The outlet is used for removing old or used up matter from the digester.
v) Emptying tank
The emptying tank is where used up matter is collected before it is taken to the garden as manure.
vi) Biogas tube
The biogas tube traps and takes biogas to the heating or lightning equipment.
vii) Biogas digester.
A biogas digester is where animals and plants waste are put to ferment.
Qn. Why is the biogas digester tightly sealed?
To prevent the entry of oxygen.
Qn. State the uses of biogas.
For cooking
For lighting
For heating
Qn. Give the advantages of using biogas
Biogas is cheap.
Biogas does not pollute the environment.
Materials for making biogas are readily available.
Qn. State the disadvantages of using biogas.
Biogas may not be efficient.
Biogas contains impurities.
Qn. What is an effluent?
An effluent is a liquid substance obtained after production of biogas.
Qn. What is sludge?
Sludge are waste materials removed from a biogas digester.
Qn. What is slurry?
Slurry is a mixture of dung and water that enters a biogas plant in a semi liquid form.

Biogas production