Anaerobic Digestion
An anaerobic digester is an air tight, oxygen-free container that is fed an organic material, such as Human Waste, animal manure or food scraps. A biological process occurs to this mixture to produce methane gas, commonly known as biogas, along with an odor-reduced effluent. Microbes break down manure into biogas and a nutrient-rich effluent.
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Biogas Production from Human Waste
Biogas fuel is a flammable substance that burns in a similar fashion to liquefied petroleum gas (LPG), and as such, biogas energy can be utilized as an alternative to fossil fuels. Biogas production is often achieved using a biogas plant, which is a system that “digests” organic matter to produce gas.
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Four Steps of Biogas Production / Fermentation:
Step 1: Hydrolysis Out put: Amino Acids and Fatty Acids
Step 2: Acidity Increase Output: Organic Acids and Carbon dioxide
Step 3: Acetic Acid Formation Output: Acetic Acid, CO2, Hydrogen
Step 4: Methane Formation Output: Methane, Co2, Water
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