A landfill operator has hired you to help investigate the economic feasibility of extracting the landfill gas and produce usable energy. The gas composition is as follows: Methane CH4 85% (usual combustion reaction) Ammonia NH3 7% (4NH₃ 3O₂ → 2N₂ 6H₂O) Hydrogen sulfide H₂S 5% (H₂S 1.5 O₂→ H₂O SO₂) Water vapor H₂O 3% Determine the air to fuel (A/F) to ratio for this gas using 10% excess air. Calculate the LEL of methane. For complete combustion, which component (s) of the exhaust gas would be considered urban air pollutants?
