Purification of aqueous amine solvents used in post combustion CO2 capture: A review

► Amine solvents are readily degraded by O2, SOx and NOx in post combustion flue gases. ► Solvent degradation reduces performance, causes corrosion, foaming and flooding. ► Traditional reclamation technologies include purging, filtration and distillation. ► Approaches such as IEX and ED may be more relevant in post combustion applications.