[Saeid Tajbakhsh]

The best biogas upgrading technology depends on several key factors, including the composition of the feedstock (such as levels of CO₂, H₂S, air, and moisture in the biogas), project location (availability of utilities, space constraints, and climate), and the required gas quality based on regulatory or market standards. Technologies must be matched to the specific context. Some perform better with certain feedstocks or in areas with limited utilities. Low-footprint systems with low operating costs and flexible purity control are often preferred, especially for distributed or resource-constrained sites. Depending on the level of contaminants in the biogas, additional treatment steps may be required to remove compounds like H₂S, nitrogen, or oxygen. Modern upgrading systems now offer integrated solutions that combine multiple treatment steps into a single package, significantly reducing both capital and operating costs.