"Over the past several decades, polymeric gas separation membranes have become widely used for a variety of industrial gas separations applications and it is growing. Membrane technology are satisfied to the principles of Green Chemistry, that is why area of membrane technology has a gait demand on our future. The goal for the course is to give a comprehensive understanding of membrane technology with reference to the transport mechanisms through different polymeric membranes. A description of new classes of polymers includes thermally rearranged (TR) polymers, polymers of intrinsic microporosity (PIMs), room-temperature ionic liquids (RTILs), perfluoropolymers, and high-performance polyimides will be given. Thus, the differences in separation properties of the membrane materials will be explained and give the basis for a good choice when membrane separation processes are considered in different membrane modules and membrane cascades for the current and potential new application. A brief overview of the module design will be considered, including flat sheet membrane, tubular membrane and hollow fiber membrane design and its area of application Furthermore, this knowledge is essential in identifying technical limitations of membrane processes in their practical and economic use. A large fraction of the course will be dedicated to polymer science aspects required for the development of advanced membranes for individual process types. General analytical techniques (GS, MS, FTIR, UV ect.) to evaluate membranes will be introduced for gas permeation membranes. "