Journal ArticleDOI
Surface catalysis of uranium(VI) reduction by iron(II)
Reads0
Chats0
TLDR
In this article, the authors investigated the kinetic effect of specific adsorption interactions on the chemical reduction of uranyl (UVIO22+) by ferrous iron, and derived a rate law for surface-catalyzed U(VI) reduction by Fe(II), d[U(VI)] dt =−k[≡ Fe III OFe II OH 0 ][U( VI)] ads where the bimolecular rate constant k has a value of 399 ± 25 M−1 min−1 at 25°C.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 1999-10-01. It has received 647 citations till now. The article focuses on the topics: Uranyl & Reaction rate constant.read more
Citations
More filters
Journal ArticleDOI
Connecting Observations of Hematite (α-Fe2O3) Growth Catalyzed by Fe(II)
Kevin M. Rosso,Svetlana Yanina,Christopher A. Gorski,Philip Larese-Casanova,Michelle M. Scherer +4 more
TL;DR: It is shown that hematite grown on the (001) surface in Fe(II)-oxalate solution at pH 2.10 and 348 K has magnetic properties that closely correspond to those of hematites grown inFe(II) solution at GPA 7.4 and room temperature, and the temperature evolution and extent of the Morin transition displayed in these two materials strongly suggest a mechanistic link involving trace structural Fe( II) incorporation into the growing heMatite.
Journal ArticleDOI
Enhanced removal of uranium(VI) by nanoscale zerovalent iron supported on Na-bentonite and an investigation of mechanism.
TL;DR: The reductive removal of U(VI) by nanoscale zerovalent iron (NZVI) was enhanced by using Na(+)-saturated bentonite (Na-bent) as the support, and the mechanism for the enhanced removal were investigated comprehensively.
Journal ArticleDOI
Early diagenesis of trace metals (Cd, Cu, Co, Ni, U, Mo, and V) in the freshwater reaches of a macrotidal estuary
TL;DR: In this article, the vertical profiles from the water column, including the maximum turbidity zone (MTZ) to the consolidated sediment were sampled in September 2000 in the freshwater reaches of the Gironde Estuary during a complete neap tide-spring tide cycle.
Journal ArticleDOI
Dissimilatory reduction of Cr(VI), Fe(III), and U(VI) by Cellulomonas isolates.
TL;DR: This is the first report of Cellulomonas sp.
Journal ArticleDOI
Controls on Fe(II)-Activated Trace Element Release from Goethite and Hematite
TL;DR: The results demonstrate that structurally incorporated trace elements are mobilized from iron oxides into fluids without abiotic or microbial net iron reduction.
References
More filters
Book
Critical Stability Constants
TL;DR: Erratum to: Aminocarboxylic Acids to: Iminodiacetic Acid Derivatives to: Peptides to: Aliphatic Amines to: Protonation Values for other Ligands.
Book
Solutions, Minerals and Equilibria
Robert M. Garrels,C. L. Christ +1 more
TL;DR: In this article, the authors provide a thorough, up-to-date coverage of controls on the chemical quality of surface and ocean waters. But they do not provide a detailed analysis of the results of their experiments.
Book
Fourier Transform Infrared Spectrometry
TL;DR: The theory and instrumentation for Fourier transform infrared spectrometry are discussed, and important areas of chemistry include atmospheric monitoring, surface chemistry, and on-line identification of chromatographically separated materials.
Book
Vogel's textbook of quantitative chemical analysis
TL;DR: In this paper, the principles of reaction in solution are discussed and the basis of separarative methods are discussed, as well as the safety units of Reagent Purity and Reagent Reactions in Solution.
Journal ArticleDOI
Uranium solution-mineral equilibria at low temperatures with applications to sedimentary ore deposits
TL;DR: The Gibbs free energies, enthalpies and entropies of 42 dissolved uranium species and 30 uranium-bearing solid phases have been critically evaluated from the literature and estimated when necessary for 25°C.