Membrane-Based Technologies for Post-Combustion CO 2 Capture from Flue Gases: Recent Progress in Commonly Employed Membrane Materials.

Carbon dioxide (CO 2 ), which results from fossil fuel combustion and industrial processes, accounts for a substantial part of the total anthropogenic greenhouse gases (GHGs). As a result, several carbon capture, utilization and storage (CCUS) technologies have been developed during the last decade. Chemical absorption, adsorption, cryogenic separation and membrane separation are the most widely used post-combustion CO 2 capture technologies. This study reviews post-combustion CO 2 capture technologies and the latest progress in membrane processes for CO 2 separation. More specifically, the objective of the present work is to present the state of the art of membrane-based technologies for CO 2 capture from flue gases and focuses mainly on recent advancements in commonly employed membrane materials. These materials are utilized for the fabrication and application of novel composite membranes or mixed-matrix membranes (MMMs), which present improved intrinsic and surface characteristics and, thus, can achieve high selectivity and permeability. Recent progress is described regarding the utilization of metal-organic frameworks (MOFs), carbon molecular sieves (CMSs), nanocomposite membranes, ionic liquid (IL)-based membranes and facilitated transport membranes (FTMs), which comprise MMMs. The most significant challenges and future prospects of implementing membrane technologies for CO 2 capture are also presented.