These Conference Proceedings deal with the papers presented at the International Conference on Ion Exchange Processes (ION-EX '87) which was held at The North East Wales Institute of Higher Education, 13-16 April 1987. The camera-ready paper format was chosen so that delegates could receive their copy on arrival at the Conference. The Proceedings include reviews of traditional ion exchange processes, ion chromatography and synthesis of resins. In addition there are research papers dealing with inorganic ion analysis; organic acid and organic base analysis; the theory of ion exchange and novel developments; the industrial ion exchange procedures; and finally inorganic ion exchangers. The Proceedings should therefore be of interest to those who need to be brought up to date in the various aspects of processes which involve ion exchange and ion chromatography which are now accepted as important in analysis, separation processes and process control. In each of these areas there have been important developments which are herein described. As Editors we should like to express our thanks to the individual authors for preparing their manuscripts in the required format and to Haydn Hughes for his invaluable assistance in compiling these Proceedings. PETER A. WILLIAMS MICHAEL J. HUDSON VII CONTENTS Preface V S~ction 1: Inorganic Ion Analysis The Evolution of Modern Ion Chromatography 3 H. SMALL Analysis of Inorganic Anions and Cations in Plant Tissues by Ion Chromatography 14 1.

Zeolites are attracting a great deal of attention in various fields of science and technology. Many exciting new developments have occurred in their industrial application and these developments have in turn inspired much new significant fundamental research. This proceedings volume, containing 121 contributed papers, an introductory talk, two plenary lectures and nine invited lectures, is valuable not only for the quantity but also for the high quality and originality of the contents. The topics addressed cover all fields of science and technology related to natural and synthetic zeolites, namely: mineralogy, geology, structure, synthesis, ion-exchange and modification, sorption, catalysis, and technical applications (including agricultural uses).The numerous new results and concepts presented and the particularly timely publication of the volume make it a must for all involved with zeolites.

Current Trends and Future Developments on (Bio-) Membranes: Membrane Desalination Systems: The Next Generation explores recent developments and future perspectives in the area of membrane desalination systems. It includes fundamental principles, the different types of smart nano-structured materials, energy and brine disposal issues, design approaches and the environmental impact of membrane desalination technology. The book provides an extensive review of literature in the area of membranes for desalination systems of low energy consumption and discusses the membrane modelling necessary for desalination system validation in achieving high water recovery, low energy and near-zero liquid discharge. - Outlines the use of the potential of salinity gradient power from brines for a low-energy desalination concept - Focuses on the development of integrated membrane systems to achieve the goal of near-zero-liquid-discharge - Summarizes the latest advancement in the nanosciences for creating membranes with advanced properties and functions

Volume 1 of the book discusses such topics as absorption, chromatography, crystallization, microcapsules, adsubble methods, chemical complexing, parametric pumping, molecular sieve adsorption, enzyme membrane systems, immobilized solvent membranes and liquid surfactant membranes.

This book provides comprehensive coverage of developments in ion exchange areas which would continue to have major impacts in the general pursuit of pollution control and pollution prevention. Its nine chapters can be split into four different theme areas: trace contaminants removals; new materials; desalination and finally controlling gaseous pollutants. This would have value for practicing engineers, scientists and researchers who are pertaining to ion exchange technology. It would also server the needs of those trying to explore and identify new technologies in the areas of pollution control and pollution prevention.

Accurate determination of trace elements is critical in various fields of science and technology. Direct measurement of trace elements in samples with complex matrices is often impractical, either due to analytical sensitivity limitations or matrix interferences. Preconcentration procedures are generally needed to eliminate matrix interferences and/or enrich minute amounts of analytes to a level for reliable measurements. Preconcentration Techniques for Trace Elements provides up-to-date information on various preconcentration techniques and detailed discussions regarding such topics as the dissolution of matrices, coprecipitation, solvent extraction, electrochemical means, ion exchange, sorption, chromatographic methods, flotation, membranes, volatization, polymer foam sorbents, fire assay, isotachophoresis, and filter papers. This comprehensive volume, featuring contributions from 21 experts from nine countries, will provide valuable reference material for all scientists and technicians dealing with trace analysis of real-world samples.

This volume is a record of a conference, which was the fourth in a series held at NWEI, in Wrexham. It brought together scientists with interests in the broadly based subject of ion exchange, with the aim to cover aspects of its application as well as advances in the theory of ion exchange.

Relates how to remove contaminants from effluent streams. The book discusses separation of environmental pollutants - enriching, stripping, clarification, benefication, remediation, removal, concentration, purification, and more - and critiques both tried-and-true and newer methods. It covers classical as well as newly emerging means of separating industrial waste and by-products from environmental streams.

Ion-Exchange Chromatography and Related Techniques defines the current state-of-the-art in ion-exchange chromatography and related techniques and their implementation in laboratory and industrial practice. This book provides a compact source of information to facilitate the transfer of knowledge and experience acquired by separation science specialists to colleagues from diverse backgrounds who need to acquire fundamental and practical information to facilitate progress in research and management functions reliant on information acquired by separation. Individual chapters written by recognized experts lending credibility to the work will allow this book to serve as a high value reference source of current information for analytical and biopharmaceutical chemists. - Includes individual chapters written by recognized authoritative and visionary experts in the field to provide an overview and focused treatment of a single topic - Presents comprehensive coverage of ion-exchange techniques from theory, to methods, to selected applications for ions and biopolymers - Provides Tables and diagrams with commonly used data to facilitate practical work, comparison of results and decision-making

Various separation membranes have been developed since their discovery over half a century ago, providing numerous benefits and fulfilling many applications in our everyday lives. They lend themselves to techniques ranging from microfiltration and gas separation, to what can be considered as the most advanced technique - ion exchange. This book, aimed at academic researchers, engineers and industrialists, contains a brief history of ion exchange and goes on to explain the preparation, characterization, modification and applications of these important membranes. Discussions include the use of ion exchange in analytical and medical techniques, as well as the development of future applications.