The System Uranyl Nitrate–Water–Organic Solvent.

The Uranyl Nitrate - Water System Above 60 °

Fate of uranyl in a quaternary system composed of uranyl, citrate, goethite, and Pseudomonas fluorescens.

This study investigated the partitioning of uranyl within a quaternary system made up of uranyl, citrate, goethite, and the bacterium Pseudomonas fluorescens. In the absence of cells, uranyl was sorbed to goethite as a complex involving surface groups and/or citrate. Measurements of the evolution of CO2 indicated that the addition of bacterial cells lead to the gradual biodegradation of citrate...

Challenging conventional f-element separation chemistry--reversing uranyl(VI)/lanthanide(III) solvent extraction selectivity.

The water soluble tetradentate Schiff base, N,N'-bis(5-sulfonatosalicylidene)-diaminoethane (H2salen-SO3), will readily coordinate to the uranyl(VI) cation, but not to the same extent to trivalent lanthanide cations. This allows for the reversal of conventional solvent extraction properties and opens the possibility for novel separation processes.

Porous Fiber Formation in Polymer-Solvent System Undergoing Solvent Evaporation

A New Uranyl Silicate Sheet in the Structure of Haiweeite and Comparison to Other Uranyl Silicates

The structure of haiweeite, Ca[(UO2)2Si5O12(OH)2](H2O)3, Z = 4, orthorhombic, a 7.125(1), b 17.937(2), c 18.342(2) Å, V 2344.3(7) Å3, space group Cmcm, has been solved by direct methods and refined by full-matrix least-squares techniques to an agreement index (R1) of 4.2% for 1181 unique observed reflections (|Fo| ≤ 4 F) collected using MoK X-radiation and a CCDbased area detector. The structur...