"Anaerobic decomposition" refers to the breakdown of organic matter in the absence of oxygen. It occurs when bacteria break down waste or dead organisms without needing oxygen to do so. Full definition
Also necessary is oxygen, for anaerobic decomposition is a slow process that causes foul odors. (fieryfoodscentral.com)
With fewer solids there is a decrease in anaerobic decomposition and a reduction in the production of methane emissions. (nativeenergy.com)
The McKinney Landfill project, based at a closed landfill in McKinney, Texas, works to capture gases that would otherwise be emitted into the atmosphere from anaerobic decomposition within the landfill. (greencarcongress.com)