The most promising approaches to making polysiloxane-based membranes more selective are considered. These approaches can be subdivided into three groups: (1) development of new membrane materials by copolymerization, (2) modification of the polysiloxane chain (in the backbone and pendant chains), and (3) development of mixed matrix membranes. All the three approaches are subjected to a critical analysis, and conclusions are made on the prospects for the development of high-selectivity materials and high-performance membranes based on them. The data are presented from the viewpoint of applied aspects of polysiloxane-based membranes.

Absorption using aqueous solutions of alkanolamines is the most widely used procedure for removal of carbon dioxide from natural gas, flue gases from power-generating facilities, and other mixtures....

Heat-stable salts (HSS) are well-known degradation products in the acid gas removal technologies with alkanolamines, especially in the post-combustion CO2 Capture processes. The traditionally applied HSS removal methods such as purging, filtration, distillation might be economically unattractive in the large scale post-combustion plant case. Electrodialysis could be an alternative method for solvent reclaiming with removal of electrically charged amine degradation products. This work presents the results of electrodialysis reclaiming concept tested under real operation conditions during pilot campaign at Heilbronn post combustion CO2 Capture pilot plant. The HSS removal results and some process specific parameters are presented