2012
DOI: 10.1016/j.gca.2012.07.019
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U(VI) removal kinetics in presence of synthetic magnetite nanoparticles

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Cited by 64 publications
(74 citation statements)
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References 58 publications
(87 reference statements)
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“…Numbers in parentheses are one standard deviation on the last decimal place. 2014), but was in excess of that observed experimentally elsewhere (Huber et al, 2012). However, in contrast to the study of Huber et al (2012), here U was present during magnetite formation, indicating that U incorporation occurs mainly in the rapid crystallization phase, but continues during ageing.…”
Section: X-ray Absorption Spectroscopycontrasting
confidence: 78%
See 1 more Smart Citation
“…Numbers in parentheses are one standard deviation on the last decimal place. 2014), but was in excess of that observed experimentally elsewhere (Huber et al, 2012). However, in contrast to the study of Huber et al (2012), here U was present during magnetite formation, indicating that U incorporation occurs mainly in the rapid crystallization phase, but continues during ageing.…”
Section: X-ray Absorption Spectroscopycontrasting
confidence: 78%
“…Indeed, with time, it appears that adsorbed uranium may become incorporated into the magnetite structure with XPS suggesting U(VI) and U(V), and XANES suggesting U(IV) and U(V)/U(VI). EXAFS modelling was more challenging but the authors suggested that U was incorporated into the magnetite octahedral site (Huber et al, 2012). U(IV) associated with iron oxide minerals as UO 2 is easily remobilized to solution under oxidizing, and potentially even mildly reducing conditions (Senko et al, 2002(Senko et al, , 2007Campbell et al, 2011).…”
Section: Introductionmentioning
confidence: 99%
“…1 Uranium (U(VI)) and its compounds are highly toxic and can cause progressive or irreversible renal injury. 4,5 More importantly, as the naturally occurring minerals composed of Fe(II) and Fe(III), magnetite was evidenced to reduce U(VI) to U(IV) by the oxidation of Fe(II). 3 Magnetite nanoparticles have been widely used for U(VI) removal with the advantage of high surface area, inexpensive cost and strong magnetic responsivity.…”
Section: Introductionmentioning
confidence: 99%
“…It was suggested that the reduction of uranium with the iron sulfide mineral under low temperature conditions was an important process in the transport of U in the subsurface environments at U contaminated sites. Likewise, Huber et al reported that >90% U was removed from aqueous solution by a synthetic magnetite(Fe II ,Fe III 2 O 4 ) nanoparticles after 24 h within the pH range of 5–11. Up to 80% U(VI) was reduced to U(IV) and bound onto the surface of magnetites.…”
Section: Applications Of Xanes In Actinide Characterizationmentioning
confidence: 97%