Different Types of Organisms Present in a Biogas Plant
A biogas plant uses microorganisms to produce fuel from a variety of sources of organic material, including crops, agricultural residue, waste material and table scraps. Different kinds of bacteria, working under anaerobic conditions (without oxygen), ferment and digest the material to produce methane gas. Instead of burning fossil fuels, such as coal or gasoline, people can use a biogas plant to make fuel out of farm animal waste that might otherwise be discarded. There are three stages of biogas production, using three different types of bacteria.
Fermentative Bacteria
During the first stage, fermentative bacteria in a digester tank decompose the organic material, breaking down proteins, fats and carbohydrates into less complex components, such as amino acids and peptides.
Acetogenic Bacteria
During the second stage, acetogenic bacteria convert the decomposed material into acetic acid, carbon dioxide and hydrogen.
Methanogenic Bacteria
During the third stage, methanogenic bacteria use the acetic acid, carbon dioxide and hydrogen to produce methane. At this point, people can collect the methane gas and use it for fuel.
Tags: Bacteria During, acetic acid, acetic acid carbon, acid carbon, acid carbon dioxide, Biogas Plant, carbon dioxide