chapter 1 Sorption of Solvent Mixtures in Ion Exchange Resins: Influence of Elastic Properties on Swelling Equilibrium and Kinetics -- chapter 2 Development of Simulated Moving Bed Reactor Using a Cation Exchange Resin as a Catalyst and Adsorbent for the Synthesis of Acetals -- chapter 3 Ion Exchange Resins in Drug Delivery -- chapter 4 Biopolymers as Supports for Heterogeneous Catalysis: Focus on Chitosan, a Promising Aminopolysaccharide -- chapter 5 Ion Exchange Selectivity as a Surrogate Indicator of Relative Permeability of Homovalent Ions in Reverse Osmosis Processes -- chapter 6 Chitosan: A Versatile Biopolymer for Separation, Purification, and Concentration of Metal Ions -- chapter 7 Short-Bed Ion Exchange.