Treatise On Efficient Biogas Purification: Hydrogen Sulfide Removal And Efficient Energy Recovery

Energy recovery from biogas is becoming more common, but the processes are hampered with the presence of hydrogen sulfide (H2S). Biogas is a mixture of methane and carbon dioxide (CO2) and is often contaminated with toxic quantities of H2S. Sources of biogas are: municipal landfills that produce landfill gas (LFG); wastewater treatment plants; industrial plants; and large scale livestock farms. The H2S levels can range between 200-5000 ppmv from municipal facilities to over 30,000 ppmv from industrial facilities.