"Ion exchange", as Dr. Robert Kunin has said, "is a unique technology since ft occupies a special place in at least three other scientific disciplines - polymer chemistry, polyelectrolytes and adsorption. " It may also lay claim to being one of the most widely used industrially. From its origins in water treatment and the sugar industry, through hydrometallurgical applications as diverse as the treatment of plating wastes and the tonnage production of uranium, to the present-day production of ultrapure water for the microelectronics industry, the recovery of valuable materials from sewage effluents and pollution control, the uses of ion exchange are legion. As a result, it is well-nigh impossible to prevent infiltration by the real world of even the most academic of conferences on the subject. It came as no surprise to the Scientific Board of the NATO Advanced Study Institute on "Mass Transfer & Kinetics of Ion Exchange" that one third of the lecturers, and one half of their advanced students, were from Industry, nor that the two round-table discussions, which specially featured industrial applications and future requirements, were well attended and enthusiastically debated.

Inhalt

Ion Exchange Towards the Twenty First Century.- The Use of Some Coordinating Copolymers in Hydrometallurgy.- The CCS-Ion Exchange Contactor.- Outlook and Desires of Ion Exchange Resin Technology Development in the Nuclear Field.- Purification of Effluents of Acid Copper and Nickel Plating Galvanic Processes with Conventional Cation Exchange Resins. Copper and Nickel Recovery.- Anion Resin Kinetics at High Flow Rates.- Ion Exchange Desulphation of Feedwater to MSF Evaporator. Full Scale Experience.- Calculation of Economic Indexes for Desalination Plants with and Without Desulphation Pretreatment System.- Kinetic Studies on Gel and Macroporous Anion Exchangers Using the Uranyl Sulfate/Sulfate Exchange.- Salt Conservation, Selectivity Reversal and Breakthrough Detection in Ion Exchange for Nitrate Removal.- Equilibrium and Diffusion Rate Effects of Univalent and Divalent Ions in a Bifunctional Resin.- Analysis of Ion Exchange Phenomena Occurring in Silicate Glasses Immersed in a Molten Salt Bath.- The Rim-Nut Process for Recovery of N/P Fertilizer From Sewage. Start-Up of Bari's Plant.- Ion Exchange for the Recycling of Wastewater Constituents.- Cation Exchange Softening Coupled with Electrodialysis for High Recovery Desalination.- Methods of Reducing Consumption of Sulphuric Acid in Regeneration of Strong Cation Exchangers in Water Desalination.- Design Methods for Ion Exchange Equipment.- Future Criteria for the Design and Manufacturing of Water Treatment Plants.- Water Softening for Food Processing.- Ion Exchange in the Food Industry.- Ion Exchange for the Recovery of Concentrated Ammonium Sulphate from the Process Condensate of an Ammonia-Urea Factory.- The Mechanism of Ion Exchange on Microcrystals of Inorganic Oxide-Hydroxides.- A Useful Method to Summarize Data in Ion Exchange - Influence of Temperature and Ionic Size.- Reversibility and Performances in Productive Ion-Exchange Chromatography.- Mössbauer and Electron Microprobe Studies of Precipitation Phenomena in Nafion Ion Exchange Membranes.- Ion Exchange Kinetics in Zeolite A.- Kinetics of Bulk and Interfacial Ionic Motion: The Microscopic Basis and Limits for the Nernst-Planck-Poisson System.- Nernst-Planck or No?.- Application of the Stefan-Maxwell Equations to Multicomponent Ion Exchange.- Concentration Polarization and Membrane Resistance Evaluation by Current Transient and Nernst-Planck Equations.