Salman's Infobahn

Depending on the use of the biogas, most trace components must be removed from the biogas. Water vapour can be particularly hazardous because it is highly corrosive when combined with acidic components such as hydrogen sulfide and to a lesser extent, carbon dioxide. The major contaminant in biogas is H 2 S. This component is both poisonous and corrosive, and causes significant damage to piping, equipment and instrumentation. The concentration of various components of biogas has an impact on its ultimate end use. While boilers can withstand concentrations of H 2 S up to 1000 ppm, and relatively low pressures, internal combustion engines operate best when H 2 S is maintained below 100 ppm. Most commonly used methods for hydrogen sulphide removal are internal to the digestion process: ·          air/oxygen dosing to digester biogas and ·          iron chloride dosing to digester slurry. Biological desulphurization Desulphurization of biogas can be performed by mic