Biogas composition: CH4, CO2, H2S and minor compounds
Biogas is a gaseous mixture dominated by methane (50-65 %) and CO₂ (35-45 %), with a handful of minor components that decide its quality and treatment cost: H₂S (50-6,000 ppmv), ammonia, siloxanes, VOCs, water vapour and traces. Methane is the energy; the rest are problems to manage. Its calorific value is around 6 kWh/Nm³ at […]