A biodigester is a machine used for the production of biogas, a mixture of gases created by methanogenic bacteria digesting organic matter in an anaerobic condition. A biodigester is often also referred to as a biogas chamber, a biogas plant or an anaerobic reactor. Biogas is used as a substitute for natural gas and propane in a range of siutuations from cooking, heating, and lighting, to electricity generation, and vehicle fuel. Biodigesters also produce an effluent slurry that is used as a fertilizer in a range of agricultural applications. Biodigesters are used in many countries to process animal and certain plant agricultural waste. They can also be used as a sanitation system for the processing of human waste.

Digester types

Construction methods for biodigesters are numerous. The fundamental principle is that the biodigestor is air and water tight. Types of Biodigesters include: Floating Drum Digestors, Fixed Dome Digestors, Deenbandhu Digestors, Bag Bigestors and Plug Flow Digestors.