A biodigester for fertilizer production is a technology that transforms organic waste (such as manure, food scraps, grass, etc.) into two main products:

1. Biogas – a combustible gas (mainly methane), which can be used as an energy source.
2. Biofertilizer – a nutrient-rich liquid fertilizer, excellent for agriculture.

How a biodigester works:

1. Input of organic matter: waste is placed in a sealed compartment (without oxygen entry).
2. Anaerobic digestion: bacteria break down the organic matter, releasing biogas and converting the waste into biofertilizer.
3. Output: the gas is collected, and the biofertilizer can be directly applied to the soil.

Types of waste that can be used:

• Bovine, swine, or poultry manure • Agricultural crop residues • Chopped grass and straw • Food scraps and kitchen waste (without chemicals)

Advantages of a biodigester: • Production of natural fertilizer rich in nutrients (potassium, phosphorus, and nitrogen) • Reduction of odors and disease vectors • Utilization of on-site waste • Production of biogas for energy (cooking, heating water)