Design Requirements For Uranium Ion Exchange From Acidic Solutions In A Fluidized System PDF Download

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Design Requirements for Uranium Ion Exchange from Acidic Solutions in a Fluidized System

Design Requirements for Uranium Ion Exchange from Acidic Solutions in a Fluidized System
Author:
Publisher:
Total Pages:
Release: 1974
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ISBN:

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A fluidized, countercurrent ion-exchange system was developed, operated, and evaluated by the Bureau of Mines in support of its objective to help assure an adequate uranium supply for future national needs. The system consisted of integrated multiple-compartment absorption and elution columns in which the solution flows are continuous, except for short periods when resin increments are withdrawn. The exchange of uranyl sulfate between a simulated acid-leach-uranium solution and a strong-base, ion-exchange resin was studied, together with subsequent elution using an acidified sodium chloride solution. The effects of the number of compartments, compartment height, amount of resin withdrawal, solution flow rate, and column diameter were investigated. Also examined were the kinetic and equilibrium relationships for the absorption and elution steps. The experimental data indicate a strong interdependence between variables. Solution retention time appears to be a major limiting variable in the absorption process, while resin residence time is the determining factor in the elution process. The columns system was efficient over a range of conditions, but close control was needed for optimum operation.


Recent Developments in Ion Exchange

Recent Developments in Ion Exchange
Author: Peter A. Williams
Publisher: Springer Science & Business Media
Total Pages: 348
Release: 2012-12-06
Genre: Science
ISBN: 940090777X

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These Conference Proceedings deal with the papers presented at the International Conference on Ion Exchange Processes (ION-EX '90) which was held at The North East Wales Institute of Higher Education, 9- 11 July 1990. The camera-ready paper format was chosen so that delegates could receive their copy on arrival at the Conference. The Proceedings include reviews of biological materials, inorganic ion exchangers, the nuclear industry, theoretical aspects and new advances. In addition, there are research papers dealing with industrial ion exchange procedures and new materials. 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 and Linda Sneddon for their invaluable assistance in compiling these Proceedings. PETER A. WILLIAMS MICHAEL J. HUDSON V\1 CONTENTS v Preface Part 1: Biological Materials The Importance of Ion Exchange Processes in Living Systems 3 R. J. P. Williams The Use of Chemically Suppressed Ion Chromatography in Elemental Analysis 17 J. P. Senior Biological Separations Using Latex-Based Pellicular Resins 23 K.