This book presents theory, principles and applications of ion exchangers for water and environment management.  It begins with an introduction, ion-exchange equilibrium kinetics of ion-exchange process and fundamental properties of ion exchangers which make them appropriate in various applications. The theories underlying the operation of ion-exchange resins are explained, as well as the production of resin products with groups adapted to specific ions or groups of ions including principles of ion-exchange process, different synthetic procedures of ion exchangers and characterization techniques, and the role of ion exchangers with their specific characteristics. This book is an invaluable tool to analytical chemists and researchers who are interested in the applications of ion-exchange materials.