Choppin / Nash Separations of f Elements

1995
ISBN: 978-1-4899-1406-4
Verlag: Springer US
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 277 Seiten, eBook

The symposium which provided the incentive for this volume was conducted in San th Diego, California as a part of the 207 National Meeting of the American Chemical Society, March 13-17, 1994. It was conceived partly to continue an informal decennial sequence of sym posia dedicated to the topic off element separations. A lot has changed in the world of f ele ments over the last ten years, precipitating a change in emphasis which should be evident to most practitioners in the field. Production and reprocessing of nuclear fuels are no longer the principal drivers of f element separation technology. Separations technology for environment restoration, waste disposal, and the preparation of high purity lanthanides are now the defming parameters in this important field. These imperatives are reflected in the contributions to this volume. The symposium itself must be considered a success, as the attendance at all sessions was above expectations, despite the fact that it was conducted on the last two days of a large five day meeting. Our thanks to the speakers for their quality presentations, and to the audience who persevered to the end of a long meeting and against the temptation of the excellent weather of San Diego in the springtime. A complete list of symposium participants is given in Appendix 1. Preparation of this volume has been a relatively painless undertaking, largely as a result ofthe high quality ofthe submitted papers.

Zielgruppe

Research

Autoren/Hrsg.

Choppin, Gregory R.

Nash, K.L.

Inhaltsverzeichnis

Introduction: A Brief History of f Elements Separations.- In the Beginning, There Was the Actinide Hypothesis.- New Methods of Transplutonium Elements Isolation, Purification, and Separation from Rare Earth Elements and Selected Fission Products.- Extraction of Eu(III) and Am(III) with Thio and Amide Extractants.- Selective Extraction of Trivalent Actinides from Lanthanides with Dithiophosphinic Acids and Tributylphosphate.- Design of Ligands for f Element Separations.- Synthesis and Evaluation of Polyhydroxamate Chelators for Selective Actinide Ion Sequestration.- Synthesis, Characterization, and Actinide Extraction Behavior of Bridge-Modified Carbamoylmethyl-Phosphonates and Phosphine Oxides.- New Water-Soluble Phosphonate and Polycarboxylate Complexants for Enhanced f Elements Separations.- Separation of Americium from Europium by Solvent Extraction from Aqueous Phosphonate Media.- Europium(III) Interaction with a Water Soluble Complexant: From Speciation to Photodestruction.- Use of Selective Inorganic Ion Exchangers for Separation of Rare Earths.- Factors Influencing the Efficiencies of Multistage Separations of Lanthanides.- Removal of Plutonium and Americium from Hydrochloric Acid Waste Streams Using Extraction Chromatography.- Sorption Behavior of Uranium onto Reillex™-HPQ Anion Exchange Resin from Nitric and Hydrochloric Acid Solutions.- Issues in the Scale-up of Aqueous Biphasic Extraction of Uranium from Contaminated Soils.- Plutonium and Americium Separation Using Organophosphorus Extractant Adsorbed onto Ferromagnetic Particles.- Magnetic Separation for Environmental Remediation.- Appendix 1. List of Participants in the Symposium.