Better Farming Series 31. Biogas: What it is; How it is Made; How to Use it (FAO Better Farming Series, 1984): How to build a small biogas unit: You will need

Better Farming Series 31. Biogas: What it is; How it is Made; How to Use it (FAO Better Farming Series, 1984)

How to build a small biogas unit

· an oil drum of about 200 litres, to hold the waste
· an oil drum of about 120 litres, to collect the gas

Oil drums

· a piece of pipe about 10 centimetres long and about 2 centimetres in diameter, for the gas outlet
· a valve to fit the gas outlet

Gas outlet and valve

· at least 10 metres of rubber or plastic tube about 2 centimetres in diameter, for the gas line

Gas line