An Overview of the Diverse Factors Determining Biogas Upgradation

Biogas upgrading and the production of biomethane is a state-of-the-art-process of gas separation. A number of different technologies to fulfil the task of producing a biomethane stream of sufficient quality to act as a vehicle fuel or tobe injected into the natural gas grid are already commercially available and have proven to be technically and economically feasible. Nevertheless, intensive research is still in progress to optimise and further develop these technologies as well as to apply novel technologies to the field of biogas upgrading. All technologies have their own specific advantages and disadvantages and no technology is the optimal solution to every biogas upgrading site. The right choice of the economically optimal technology is strongly depending on the quality and quantity of the raw biogas to be upgraded, the biomethane quality to be achieved, and its utilisation, the operation of the biomethanation plant, continuity of the used substrates as well as the local circumstances at the plant site.