A review on sensitivity of operating parameters on biogas catalysts for selective oxidation of Hydrogen Sulfide to elemental sulfur.

Hydrogen sulfide (HS) is a critical problem for biogas applications, such as electricity and heat generation, or the production of different chemical compounds, due to corrosion and toxic effluent gases. The selective catalytic oxidation of HS to S is the most promising way to eliminate HS from biogas due to the lack of effluents, therefore can be considered a green technology. The most extensively used catalysts for HS selective oxidation can be classified in two groups: metal oxide-based catalysts, including vanadium and iron oxides, and carbon-based catalysts.