Journal ArticleDOI
Adsorption of uranyl onto ferric oxyhydroxides: Application of the surface complexation site-binding model
TLDR
In this paper, the surface complexation-site binding model of Davis et al. was used to predict uranyl adsorption from aqueous electrolyte solution onto well-characterized goethite, amorphous ferric oxyhydroxide and hematite sols at 25°C.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 1985-09-01. It has received 777 citations till now. The article focuses on the topics: Uranyl carbonate & Uranyl.read more
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Removal of Cr ions from aqueous solution using batch electrocoagulation: Cr removal mechanism and utilization rate of in situ generated metal ions
TL;DR: In this paper, the removal mechanism of batch electrocoagulation (EC) process for removing Cr ions was investigated and the influence of operation parameters on removal mechanisms was discussed, and the utilization rate of in situ electro-generated Fe ions in the sludge was introduced to investigate the removal mechanisms and optimize the EC process.
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Reactivity of ferritin and the structure of ferritin-derived ferrihydrite
F. Marc Michel,Hazel-Ann Hosein,Douglas B. Hausner,Douglas B. Hausner,Sudeep Debnath,John B. Parise,Daniel R. Strongin +6 more
TL;DR: Ferritin-derived ferrihydrite is effectively maintained in a relatively unaggregated state, which improves reactivity and opens the possibility of future applications in environmental remediation.
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Chemical Aspects of Uranium Behavior in Soils: A Review
TL;DR: Uranium has varying degrees of oxidation (+4 and +6) and is responsive to changes in the redox potential of the environment, and is deposited at the reduction barrier with the participation of biota and at the sorption barrier under oxidative conditions as discussed by the authors.
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Factors Controlling the Risks of Co-occurrence of the Redox-Sensitive Elements of Arsenic, Chromium, Vanadium, and Uranium in Groundwater from the Eastern United States
Rachel M. Coyte,Avner Vengosh +1 more
TL;DR: The co-occurrence of four health-relevant redox-sensitive elements (U, As, V, and Cr) in 1494 groundwater wells across North Carolina highlights the large gap between health recommendations and enforceable regulations, and demonstrates a degree of co-Occurrence between redox sensitive elements.
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Study of two alteration systems as natural analogues for radionuclide release and migration
TL;DR: In this article, the U-deposit hosted in hydrothermally altered tuffs in Mexico, together with weathering profiles from Cameroon were studied as natural analogues of radionuclide release and migration.
References
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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.
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Surface ionization and complexation at the oxide/water interface
TL;DR: In this article, a method for determination of intrinsic ionization and complexation constants of oxide surface sites from potentiometric titration data is reported using these experimental properties and the stoichiometry of surface reactions, surface charge, σo, adsorption density, Γi, and diffuse layer potentials, ψd, at the oxide/water interface.
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Surface ionization and complexation at the oxide/water interface II. Surface properties of amorphous iron oxyhydroxide and adsorption of metal ions
James A. Davis,James O. Leckie +1 more
TL;DR: In this paper, the site-binding model for the electrical double layer of hydrous oxides reported in a previous paper is applied to the adsorption of metal ions from dilute solution and to complex heterogeneous systems, i.e., amorphous iron oxyhydroxide.