Biogas is the gas created from the breakdown of organic waste. Biogas can be used as a cooking fuel, to power vehicles, and in the case of ZooShare, to produce electricity.
To make biogas, you need a biogas plant (also known as a biodigester) to provide the oxygen-free environment for a process known as anaerobic digestion: The biogas plant works like a big concrete stomach, mixing organic waste on a continual basis. Meanwhile, bacteria eat and digest the waste, releasing methane as well as other gases. Instead of letting these greenhouse gases escape into the atmosphere (where they contribute to global warming), the biogas plant captures the gas and stores it until it can be used to create electricity. The biogas plant is “fed” organic waste on a continual basis, meaning it can store biogas and produce electricity at any time.
The biogas is fed through a combustion engine, which generates electricity.
At the end of the biogas production process, the solid waste that is left is used as a nutrient-rich fertilizer to grow more food.
The production of biogas:
• Diverts organic waste from landfills
• Recycles a readily available source of energy
• Stops methane (21x worse than C02) from going into the atmosphere
• Stores its own energy, meaning it can dispatch electricity whenever it’s needed
• Eliminates pathogens and odours in organic waste
• Returns valuable nutrients to the soil in the form of a rich fertilizer