Biogas systems use anaerobic bacteria to break down wet organic matter in this instance animal, plant and food waste.

Using a biogas digester for waste can assist in keeping bacteria out of the environment and precious water resources and can cut greenhouse gas emissions. Biogas plants can also improve sanitation

The breakdown of this waste produces biogas, which is a mixture of methane and carbon dioxide, and also a semi-solid residue. The biogas is used as a fuel for generating heat, light or energy, and the residue is useful as a fertilizer

How bio-gas works

A simple biogas plant has a container to hold the decomposing organic matter and water (slurry), and another to collect the biogas. There must also be systems to feed in the organic matter (the feedstock), to take the gas to where it will be used, and to remove the residue.

In our biogas plants, the slurry container and gas container are combined, so that the gas collects under a rigid dome over the slurry. As the slurry breaks down, the biogas produced pushes some of the slurry into a separate reservoir. When the biogas is taken off, the slurry flows back.

A biogas plant needs methane-producing bacteria to get it started. Once the plant is producing biogas, the bacteria reproduce and keep the process going. Cow manure is the best starter.

How biogas plants are used

The digester is fed regularly and the feed is mixed with water. Animal waste specifically pig waste needs longer to digest due to the high water content.
Biogas plants can work well for many years, provided that they are constructed well and checked regularly. If the plant is made from masonry, care must be taken to make sure that the structure is water-tight and gas-tight. For this reason a prefabricated system where the quality assurance takes place in a factory is preferred.

We work on concise, relevant information on farm operations activity, market outlook, issues and opportunities arising and actions to be taken. We will use the design and construction of a higher efficiency irrigation system as well as the selection of supervisory personnel, who are experienced in small and large-scale agricultural operations and business development.

We have a comprehensive approach to changing and providing an enabling environment in which women smallholder and subsistence farmers could develop into viable commercial enterprises.