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Anaerobic digestion

Anaerobic literally means "living without air." In the environmental field anaerobic means an environment where oxygen is absent. Anaerobic digestion (AD) is a combination of processes, mediated by microorganisms, during which organic matter is converted into methane in the absence of oxygen. AD occurs naturally in several anaerobic environments such as bottom sediments of water bodies, wetlands, soils, and the stomachs of domestic livestock (cattle, sheep, goats, etc). Engineered AD systems can convert organic waste into methane providing multiple benefits. The digested organic matter resulting from the process is called digestate.

Why anaerobic digestion?

Anaerobic Digestion Diagram Photo courtesy of