• Chemical Absorption: A chemical solvent forms reversible bonds with the solute, which can then be broken to regenerate the solvent. This method can remove H2S completely, and is efficient and can operate at low pressure.
• Water Scrubbing: A physical absorption method that can reduce the H2S and H2O content of biogas.
• Pressure Swing Absorption (PSA): A common method for removing CO2 from biogas.

There are many methods for removing hydrogen sulfide (H2S) from biogas, including:

• Biological Desulfurization: This method uses sulfur oxidizing bacteria (SOB) to convert H2S into elemental sulfur.
• Iron salts: Iron salts like ferrous chloride or ferric chloride react with H2S to form insoluble iron sulfides.
• Absorption: This method uses a solid like activated carbon or iron oxide based materials to absorb H2S.

We have developed a range of biogas enzymes for effective microbial performance in wastewater treatment and optimize biogas yields.