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
Potential for Bioremediation of Uranium-Contaminated Aquifers with Microbial U(VI) Reduction
TL;DR: In this article, the potential for bioremediation of Uranium-Contaminated aquifers with Microbial U(VI) reduction is discussed, and the authors propose a method to reduce the UVI level of the aquifer.
Journal ArticleDOI
Effect of Solution and Solid-Phase Conditions on the Fe(II)-Accelerated Transformation of Ferrihydrite to Lepidocrocite and Goethite
TL;DR: The first detailed study of the kinetics of the Fe(II)-accelerated transformation of ferrihydrite to goethite, via lepidocrocite, for a range of pH and Fe( II) concentrations is presented and insight is provided into the factors controlling the transformation rate and the processes responsible for transformation.
Journal ArticleDOI
Enumeration and Characterization of Iron(III)-Reducing Microbial Communities from Acidic Subsurface Sediments Contaminated with Uranium(VI)
TL;DR: Results from a combination of cultivation-based and cultivation-independent approaches indicate that the abundance/community composition of Fe(III)-reducing consortia in subsurface sediments is dependent upon geochemical parameters (pH, nitrate concentration) and that microorganisms capable of producing spores (gram positive) or spore-like bodies (Anaeromyxobacter) were representative of acidic subsurfaced environments.
Journal ArticleDOI
Influence of Biogenic Fe(II) on Bacterial Crystalline Fe(III) Oxide Reduction
Eric E. Roden,Matilde M. Urrutia +1 more
TL;DR: The data on bacterial goethite reduction suggest that this phenomenon cannot universally explain the low microbial reducibility of this mineral, and two different mechanisms whereby accumulation of Fe(II) coatings on Fe( III) oxide and FeRB surfaces may lead to inhibition of enzymatic Fe(III) oxide reduction activity are identified and discussed.
Journal ArticleDOI
The application of zero-valent iron nanoparticles for the remediation of a uranium-contaminated waste effluent
TL;DR: The efficient uptake and retention of U on the INP for periods up to 48 h provide proof that INP may be effectively used for the remediation of complex U-contaminated effluents.
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.