Biogas treatment is the process of purifying raw biogas produced through anaerobic digestion by removing unwanted and harmful components such as hydrogen sulfide (𝐻2𝑆H2S), siloxanes, excess moisture, and other impurities. Techniques including gas scrubbing, activated carbon adsorption, and biological filtration are commonly used to prepare the gas for safe and efficient use in electricity and heat generation or as vehicle fuel. When further upgraded by removing carbon dioxide, the biogas can be converted into high-purity biomethane. This treatment step is essential for protecting equipment from corrosion and ensuring reliable, efficient energy conversion.