What is bio–digester
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A bio-digester is a facility or system that decomposes organic materials such as food waste, animal manure, or wastewater anaerobically (without oxygen) to produce biogas and fertilizer. It uses microorganisms to break down the organic matter, producing methane gas that can be used as an alternative source of energy, and nutrient-rich liquid fertilizer that can be used in agriculture. Bio-digesters are often used in rural areas, farms, and wastewater treatment plants to manage organic waste and produce renewable energy.