ABSTRACT The purpose of this study was to investigate the hydrogen permeability of different tubular polymer membranes for the usage in a biological methanation (BM) membrane reactor. An extensive literature research was conducted to collect permeability data of various polymers. Furthermore, five polymers were chosen concerning commercial availability, chemical resistance and the capability to endure elevated temperatures up to 63°C and pressures up to 5 bar. The hydrogen permeability of these