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
Citations
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Microemulsion-assisted preparation of a mesoporous ferrihydrite/SiO2 composite for the efficient removal of formaldehyde from air.
TL;DR: It is demonstrated that porous ferrihydrite/SiO2 composites can act as an efficient adsorbent toward HCHO, and a new route for the rational design of cost-effective and environmentally benign adsorbents with high performance for indoor air purification is suggested.
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Occurrence, behavior and distribution of high levels of uranium in shallow groundwater at Datong basin, northern China
Ya Wu,Yanxin Wang,Xianjun Xie +2 more
TL;DR: The results suggest that bedrocks such as Carboniferous and Permian sedimentary rocks, especially the coal-bearing strata which have higher U contents at the west mountain areas may also account for the abnormally high levels of U in groundwater.
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Groundwater radon, radium and uranium concentrations in Região dos Lagos, Rio de Janeiro State, Brazil
TL;DR: Low pH value is the most important water parameter linked to high radium concentration, and there was a significant correlation between uranium concentrations and electrical conductivity values, and also between uranium concentration and concentrations of Ca, Mg, Na, K, and Cl, indicating sea water impact.
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Uranium(VI) Adsorption and Surface Complexation Modeling onto Background Sediments from the F-Area Savannah River Site
TL;DR: The modeling approach successfully predicts U(VI) adsorption behavior by the background F-Area sediments, and the experimental results indicate that the fine fractions in sediments control U( VI) Adsorption due to their large surface area, although the quartz sands show a stronger adsorptive ability per unit surface area than thefine fractions at pH < 5.0.
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Biogeochemical aspects of uranium mineralization, mining, milling, and remediation
TL;DR: A review of the hydrometallurgical processes by which U is extracted from ore, the biogeochemical processes that can affect the fate and transport of U and associated elements in the environment, and possible remediation strategies for site closure and aquifer restoration can be found in this paper.
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.