A review on the production of swine methane gas in anaerobic lagoons

Abstract

This is a bioremediation alternative to transform pig manure into the production of methane gas (CH4), transformed as biohydrocarbon, through multiple reactors or anaerobic treatment lagoons, covered by floating plastic geomembrane, making a sustainable use using biofuel in thermal steam boilers and employing an electric generator to self-supply the pig farm, ceasing to consume fossil energy with high production costs. A design of biodigesters in a battery with a daily flow of low agitation and disturbance is integrated so that the cellulose and hemicellulose fibers do not settle. It is not a continuous flow because oxygen and methanotrophic bacteria enter periodically, losing efficiency. It must be a chained system for each day, which the great masters of the brewing industry would use as a model and example. An anaerobic liquid-phase culture medium is formed by methanogenic microorganisms that use undigested manure or excrement as nutrients, together with waste from feed troughs filled with balanced pig feed that falls through the cracks in the floors and is carried to drainage channels during washing and cleaning in confined farms in order to be removed from the facilities. At the end of the fermentation, the chemical compounds will have reduced the biochemical oxygen demand by 90%.