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Well, we have been travelling together across diverse benefits of generating biogas in both domestic and industrial scale. Let us have a brief look on how the generators work and how microbes play their efficient role in producing the biogas from organic waste materials.
The schematic process that takes place for producing biogas
To give a gist for you in a single line, the biogas production is basically the breakdown of organic materials in the absence of oxygen.
To accomplish this, organic materials are first given as input to the anaerobic digesters. Basically, anaerobic digestion is a series of process in which the microbes breakdown biodegradable material in the absence of oxygen. These digesters like VNS Enviro’s “Bio igniter” are an air-tight tank that converts biomass into the gas that contains methane in large parts.
Other gas components that you can identify are hydrogen sulphide, carbon di oxide and a little amount of moisture. To use the biogas as the fuel for heating and electricity, these gases are combusted by the process of oxidation (providing oxygen).
Microbes that are on the lime light
The microbes that play the role in anaerobic digestion are acidogenic, acetogenic and methanogens. As the initial step of the digestion process, bacterial hydrolysis takes place on the biomass. This step helps in the breaking of organic polymers and make it available for the anaerobic bacteria. Then, the acidogenic bacteria act on the broken-down polymers further, to release organic acids, carbon di oxide, hydrogen and ammonia. Now comes the acetogenic bacteria that works on the organic acids and convert them into acetic acid along with other gases. Finally, our hero of the whole procedure comes into the action. Finally, the methanogens convert these into methane and carbon di oxide.
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