How do you convert animal manure to biofuel?

Animal manure can be converted to biofuel through several processes, primarily anaerobic digestion and composting. In anaerobic digestion, microorganisms break down the organic matter in manure in the absence of oxygen, producing biogas, which is mainly methane and can be used as a renewable energy source. Composting, on the other hand, involves aerobic decomposition, which can create biofertilizers, but can also yield bioenergy through subsequent processes like gasification. Both methods contribute to reducing waste and generating sustainable energy.