As part of the DIVAGRI project, we want to present a special, simple way of biogas production from organic residues.
Therefore, we decided to install an eco friendly, easy to handle system instead of a cement-based biogas digester.
We found the innovative Israeli company homebiogas.com from the Webber Group, which has sales in Ghana.
This is the kind of biogas system we have chosen:
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the principle of the HOMEBIOGAS system
This is the smallest 2.0 version for a small family
The systems are producing except biogas as well very good organic fertilizer! see green watering can
Dr. Maik Springmann standing with Kwasi Boatey Boateng (middle), the
general director of the Webber group and the responsible manager for
biogas Mr. Bright Anthony Osei-Buapim (left).
Maik is testing the indoor gas cooker.
For our farm size we decided to install the 6.0 system. The installation within a two days workshop of Webber group/homebiogas for our farmers is planned for autumn 2024. It will take place as part of the planning process for our sustainable, ecological farmer prototype house.
We introduced the biogas production principle to our farmers by using power point presentations about how a cow stomach functions and about the meaning of bacteria for the whole process.
We prepared a simple kids experiment for the group some days before: we filled kitchen waste and a bit garden earth into empty plastic bottles and closed them with balloons. After some days in the warm clima in a shady place the balloons filled with gas!!
Mr. Osei-Buapim presented the sucess of his company, the different systm sizes and the opportunity to become a trainer for these biogas systems.
These are the construction steps in detail:
1. Bring fresh cow dung
2. mix it with water to become a slurry (without stones and bigger particles)
3. level the ground
4. enroll the biogas digester
5. assemble all parts of the system according to the manual
6. connect as well the gas stove with the special yellow pipe with the biogas bag
7. fill the cow dung slurry with more water inside the system
8. put the prepared sand bags into the upper part of the biogas system
9. place a bucket or watering can under the fertilizer outlet
10. wait for around 21 days
preparing the cow dung mix
filling the manure mix into the biogas system
Bright Anthony Osei-Buapim explains the principle of the HOMEBIOGAS system
Maik Springmann explains the double benefit of producing gas and fertilizer out of organic waste