What is the typical methane content in a properly operating anaerobic digester?

In a properly operating anaerobic digester, the typical methane content ranges from 65 to 70% by volume. This range is significant because it indicates a healthy digestion process where organic materials are effectively broken down by microorganisms in an oxygen-free environment.

Methane is the primary product of anaerobic digestion, and its concentration can be influenced by several factors, including the type of feedstock, retention time, temperature, and the microbial population present within the digester. When functioning optimally, the microorganisms convert organic material into biogas, which consists primarily of methane and carbon dioxide, among other trace gases.

A methane content of 65 to 70% suggests that the digester is efficiently producing biogas, which can be harnessed for energy generation or other uses. Levels significantly below this percentage may indicate inefficiencies in the digestion process or suboptimal conditions that need to be addressed.