Journal ArticleDOI
Surface catalysis of uranium(VI) reduction by iron(II)
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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
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Journal ArticleDOI
Stable Fe isotope fractionations produced by aqueous Fe(II)-hematite surface interactions
TL;DR: In this paper, stable Fe isotope fractionations were investigated during exposure of hematite to aqueous Fe(II) under conditions of variable Fe (II)/hematite ratios, the presence/absence of dissolved Si, and neutral versus alkaline pH.
Book ChapterDOI
Modeling in situ iron removal from groundwater with trace elements such as As
C.A.J. Appelo,W.W.J.M. de Vet +1 more
TL;DR: The cyclic injection of oxygenated water in an aquifer may induce in situ iron removal from groundwater as mentioned in this paper, which is called in situ ferric iron oxyhydroxide.
Journal ArticleDOI
Influence of pH and dissolved Si on Fe isotope fractionation during dissimilatory microbial reduction of hematite
TL;DR: In this paper, Fe isotope fractionations produced during dissimilatory microbial reduction of hematite by Geobacter sulfurreducens in the presence and absence of dissolved Si at neutral and alkaline pH were reported.
Journal ArticleDOI
Inhibition of Trace Element Release During Fe(II)-Activated Recrystallization of Al-, Cr-, and Sn-Substituted Goethite and Hematite
Andrew J. Frierdich,Michelle M. Scherer,Jonathan E. Bachman,Mark H. Engelhard,Brett W Rapponotti,Jeffrey G. Catalano +5 more
TL;DR: Results suggest that naturally occurring iron oxides containing insoluble elements are less susceptible to Fe(II)-activated recrystallization and exhibit a greater retention of trace elements and contaminants than pure mineral phases.
Journal ArticleDOI
A review of the retention mechanisms of redox-sensitive radionuclides in multi-barrier systems
TL;DR: In this paper, the authors provide a comprehensive perspective on the studies addressing interactions of redox-sensitive RNs with the above-mentioned potential barrier, especially for the soluble and mobile RNs, such as 129I, 36Cl, 235, 238U, 79Se, and 99Tc.
References
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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.