Extraction '84

Extraction '84 presents the proceedings of the Symposium on Liquid-Liquid Extraction Science, held in Dounreay, Scotland, on November 27-29, 1984. This book discusses the principle involved in liquid-liquid extraction. Organized into 22 chapters, this compilation of papers begins with an overview of the performances of pulsed columns, including decontamination factors and recovery yields. This text then discusses the alternative ways of managing neptunium in the Purex process and reviews the main coordination and redox characteristics of neptunium in nitric medium. Other chapters consider the mass transfer measurements made in a pulsed plate liquid-liquid extraction column. This book discusses as well the extraction of uranium from wet process phosphoric acid. The final chapter deals with full-scale pulse column tests, which have been performed with uranium and simulated fission products to evaluate. This book is a valuable resource for chemical engineers, chemists, chemical physicists, and research workers.

Dr. Sam Stuart is a physiotherapist and a research Fellow within the Balance Disorders Laboratory, OHSU. His work focuses on vision, cognition and gait in neurological disorders, examining how technology-based interventions influence these factors. He has published extensively in world leading clinical and engineering journals focusing on a broad range of activities such as real-world data analytics, algorithm development for wearable technology and provided expert opinion on technology for concussion assessment for robust player management. He is currently a guest editor for special issues (sports medicine and transcranial direct current stimulation for motor rehabilitation) within Physiological Measurement and Journal of NeuroEngineering and Rehabilitation, respectively.

ContentsProcesses 1. A Five Years Experience of Pulse Columns Extraction Cycles for the Reprocessing of Fast Breeder Reactor Fuels at the Marcoule Pilot Plant (S.A.P.) 2. Behaviour of Palladium in the PUREX Process 3. Chemical Properties of Neptunium Applied To Neptunium Management in Extraction Cycles of PUREX Process 4. The Behaviour of Technetium in a Nuclear Fuel Reprocessing Plant 5. Uranium Mass Transfer in a Pulsed Column 6. The Extraction of Uranium From Wet Process Phosphoric Acid Using A Liquid Surfactant Membrane System 7. Comparison of Experiment and Simulation For PUREX B-Type Electroreduction Pulsed Columns 8. Separation of Neptunium From Uranium and Plutonium in the PUREX Process Equipment and Contactor Design 9. Models For Performance of Extraction Columns Based On Actual Drop Behaviour 10. Design Principles For Electrical Coaleseers 11. Pulsed Plate Liquid Extractor Design 12. Davy Mckee's Combined Mixer Settler 13. The Use of Ultrasonic Instrumentation in Liquid/Liquid Extraction Plant 14. Hydrodynamics and Drop Size Distributions in a Pilot Scale Sieve Plate Extraction Column 15. The Solvent Extraction of Uranium and Plutonium From Nitric Sulphuric Acid SolutionsExtraction Fundamentals 16. Effect of Mass Transfer Parameters On Zinc Extraction by HDEHP 17. Use of Reflux in the Solvent Extraction of Metals 18. Time Dependent Mass Transfer Rates in a Liquid-Liquid System Exhibiting Interfacial Turbulence 19. Estimation of The Dispersed Phase Hold-Up in a Pulsed Perforated-Plate Column From Pressure Drop Measurements 20. Interfacial Activity in the Two Phase Systems U02 (N03) 2/ Pu(N03)4/HN03-H20-TBP/OKSummary Papers 21. The Selection of Liquid-Liquid Extraction Contactors For Nuclear Fuel Reprocessing 22. Solvent Extraction - A Brief Review of Some Recent Developments 23. Design and Performance of A Pulse Column System For FBR Fuel ReprocessingDiscussion of Papers