Poultry Judging Practice Test

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What is the percentage of methane produced during bio gas production from manure?

30-40
50-60
60-70
70-80

The correct answer is: 60-70

In the context of biogas production from manure, the typical percentage of methane that is generated is around 60-70%. This range reflects the anaerobic digestion process, where microorganisms break down organic matter in the absence of oxygen. During this digestion, methane is one of the key byproducts, making it a significant component of the biogas produced. This percentage can vary based on several factors including the type of manure, the feedstock used, the specific conditions within the digestion process, and the retention time. Factors such as temperature, pH, and the presence of other materials or contaminants can all influence the volume of gas produced and its composition. Understanding this ratio is crucial for evaluating the efficiency of biogas production systems as well as for applications in energy production and waste management.