Show a method of producing renewable energy and
biofertilizer through waste management of manure produced at
At Baobab Trust TakaNguvu 1 is imbedded in the
environment of organic sustainable
farming methods to avoid soil erosion and other farming related
Transparent technology to show the functioning of bio digestion
In December 2003 the first oil drum digester of TakaNguvu 1 was filled with bacteria and
slurry and went into
production of biogas and biofertilizer.
Bamburi North Quarry, Mombasa, Kenya
The oil drum digester is a good digester system for demonstration purposes as it is possible to look inside the digester and to see what is going on and
to understand the principle of a biogas digester.
Our experience with the oil drum digesters:
To digest the manure of 1 cow 3 oil drum digesters are
The gas yield per digester:
In a 24-hour period the average gas volume produced was 76 litres
With this amount of gas a low pressure cooker could be operated for
about 17 minutes.
The lifespan of the digester is rather short: after 1 year of
operation the drums (mixture holder as well as gasholder) had to be
replaced due to rusting.
We replaced them with plastic drums, the mixture holder as well as the
The climate at the Coast might have negatively influenced the
The handling (filling of mixture and releasing of fertilizer) is
time consuming and not very user-friendly.