I. Introduction.- Theodore Vermeulen's contributions to process design for sorption operations.- Ion Exchange: past, present, and future.- II. Chemistry of Ion Exchange Resins.- Coordination chemistry of selective ion exchange resins.- Modern research in ion exchange.- III. Chemical Engineering Aspects of Ion Exchange Processes.- Thermodynamics of ion exchange: prediction of multicomponent equilibria from binary data.- Design methods for ion-exchange processes based on the "equilibrium theory".- Fixed-bed ion exchange with formation or dissolution of precipitate.- Numerical Methods.- Modelling of multicomponent fixed bed ion exchange operations.- Fixed bed processes: a strategy for modelling.- Counter-current ion exchange.- Continuous ion exchange technology.- Efficient fractionation by ion exchange.- Parametric ion-exchange processes (parametric pumping and allied techniques).- IV. Industrial Applications.- Ion exchange in industry.- Applications of ion exchange in hydrometallurgy.- Some of the uses of ion-exchangers in hydrometallurgy.- Reaction processes involving ion-exchange resins.- Zeolites: some catalytic applications.- V. Alternative Processes.- Ion exchange membranes: principles, production and processes.- Kinetics of metal extraction: rate controlling steps and experimental techniques used to establish a design equation.- The surfactant liquid membrane: applications to metal extraction and pollution control.- Reaction reversibility in batch and continuous extractors using emulsion liquid membranes.- Fixed bed cementation experiments.- List of Participants and Lecturers.

Proceedings of the NATO Advanced Study Institute on Ion Exchange: Science and Technology, Troía, Portugal, July 14-26, 1985