Biogas

How Does Biogas Works?

Biogas is processed through anaerobic fermentation. This process is achieved through the decomposition of organic substances (slurry) by micro – organisms. The waste added to the system produces the biogas in an oxygen-free environment. In the first step, the organic substances are divided unto molecular components (sugar, amino acids, glycerin and faulty acids). Micro-organisms then convert these intermediate products into hydrogen and carbon dioxide, which are then transformed into methane and water. The methane gas is tapped and used for cooking whiles the water is treated and used as liquefied organic fertilizer to replenish the soil.

  • Unlimited supply: The Biogas technology provides a safe and sustainable approach towards managing the waste. It is achieved by an aerobically digesting the waste to produce biogas (methane), water and toilet waste (natural fertilizer). The continuous production of biogas commensurate the continuous availability of waste (slurry) in the digester. Thus, so long as there is waste, there will be continuous flow of biogas.
  • Environmentally Friendly: The digester is air-tight so the odour that comes with the waste (slurry) is concentrated in the digested. The effluent (water) is treated hence procures a colourless, odourless and pathogen- free water which can be used for other on-farm purposes.
  • Clean & Cost Effective: The biogas produced from the digester contains methane (CH4) and other impurities such as carbon dioxide (CO2), small amounts of water vapour, hydrogen sulphide (H2S), carbon monoxide (CO), and nitrogen (N2) are also present .These impurities are removed with the aid of a gas purifier before supplying to the generator. Excess gas from the digester is stored in biogas balloons and industrial cylinders to ensure ever-ready fuel for generator to run on. The generator recommended for such a project is a “continuous” one and not the “standby” the reason for this choice is that the generator must be able to be working around the clock (24/7). However choosing a generator by capacity depends on the institutions energy consumption which our engineer will be readily available to assess and make the right recommendation.

 

What Factors Influence Biogas Production?

The production of biogas is a natural process that functions in suited facilities. The following factors are considered during biogas production:

  • Organic substrate (in this case the litter) must be able to biologically compose by microorganisms.
  • The substrate should contain a only a minimum of microbiological restrictors.
  • The temperature during the decomposing process must be within a certain range (350C to 550C)
  • The PH- value should range from 6 to 8 and the fermentation must take place in an area sealed off from air and light.
  • The fermentation tank must be mixed at regular intervals.