Biogás de resíduos orgânicos
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The biogas from organic waste calculator estimates the volume of biogas that can be generated from a given mass of organic waste. It uses a conversion factor of 0.35 cubic meters of biogas per kilogram of organic waste (dry basis or volatile solids, depending on context). The calculation is simple: biogas volume = waste mass (in kg) multiplied by 0.35. This tool is useful for planning biodigestion systems, assessing energy potential in landfills, farms, or wastewater treatment plants.
The calculator is intended for renewable energy projects, waste management, and feasibility studies. For instance, a farmer can estimate biogas production from pig or cattle manure. Similarly, a municipality can evaluate energy generation potential from organic municipal solid waste. The result serves as a basis for sizing biodigesters, calculating fossil fuel substitution, or measuring methane emission reductions.
Note that the 0.35 m³/kg factor is a theoretical average for wastes with high volatile solids content. Actual production varies with waste composition, moisture, temperature, retention time, and digester efficiency. Lignin-rich wastes like corn straw produce less biogas. The calculator provides an initial estimate; for detailed projects, laboratory analysis and continuous monitoring are recommended.
Frequently asked questions
What does the factor 0.35 m³ of biogas per kg of waste mean?
This factor is an average estimate of biogas produced per kilogram of dry organic matter or volatile solids, commonly used in technical literature for biodigestion.
Is the calculator suitable for all types of organic waste?
It works for highly biodegradable wastes like food scraps, manure, and sewage sludge. Wastes high in lignin (prunings, straw) may yield less.
Is the biogas volume at standard temperature and pressure?
Yes, the 0.35 m³/kg value typically refers to biogas measured at standard conditions (0°C and 1 atm), but check the specific reference for your project.
How can I increase biogas production in practice?
Maintain proper temperature (30-40°C), neutral pH, stirring, and use waste with a good carbon-to-nitrogen ratio. Pre-treatments like shredding also help.
Can I use the result to calculate electricity generation?
Yes, knowing the calorific value of biogas (about 5-7 kWh/m³) and generator efficiency, you can estimate the electricity produced.