Impact of the uranium (VI) speciation in mineralised urines on its extraction by calix[6]arene bearing hydroxamic groups used in chromatography columns

Baghdadi, Sarah; Bouvier‐Capely, Céline; Ritt, A.; Peroux, A.; Février, Laureline; Rebière, François; Agarande, Michelle; Cote, Gérard

doi:10.1016/j.talanta.2015.07.012

Cited by 8 publications

(7 citation statements)

References 25 publications

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“…2,28−31 Many researchers found that these complexes determine the extraction behavior of U(VI) in seawater because of the high concentrations of Ca(II) and Mg(II). 2,32 It is well known that many metal ions, such as Cu(II), Al(III), Fe(III), and V(IV), coexist with U(VI) in seawater and these metal ions result in serious interference in U(VI) separation. Therefore, the selective extraction capability of PO 4 /PE toward U(VI) was compared to that toward the coexisting metal ions.…”

Section: Resultsmentioning

confidence: 99%

“…PO 4 /PE exhibits high selectivity for U(VI) against Na(I) and K(I) because the adsorption of U(VI) just slightly decreases with an increase in their concentrations. Ca(II) and Mg(II) have a more significant negative effect than that of Na(I) and K(I) on U(VI) adsorption, which can be explained by the complexation reaction among U(VI), CO 3 2– , and alkaline earth metal ions in the solution. ,− Many researchers found that these complexes determine the extraction behavior of U(VI) in seawater because of the high concentrations of Ca(II) and Mg(II). , It is well known that many metal ions, such as Cu(II), Al(III), Fe(III), and V(IV), coexist with U(VI) in seawater and these metal ions result in serious interference in U(VI) separation. Therefore, the selective extraction capability of PO 4 /PE toward U(VI) was compared to that toward the coexisting metal ions.…”

Section: Resultsmentioning

confidence: 99%

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Phosphate-Functionalized Polyethylene with High Adsorption of Uranium(VI)

Shao

Wang

et al. 2017

ACS Omega

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For uranium extraction from seawater, development of new stable and reusable sorbents with high affinity and good selectivity for U(VI) is required. Herein, a new phosphate-functionalized polyethylene (denoted PO 4 /PE) was synthesized via a simple Ar-jet plasma treatment of PE in concentrated H 3 PO 4 and was employed in U(VI) extraction from seawater. The prepared PO 4 /PE shows superior performance in the extraction of trace U(VI) from seawater. The adsorption process followed the second-order kinetics model and the Langmuir model. The maximum adsorption capacity of PO 4 /PE for U(VI) reaches 173.8 mg/g at pH 8.2 and 298 K. PO 4 /PE can be effectively regenerated by 0.1 mol/L Na 2 CO 3 and reused well even after eight cycles. Experimental results offer a new approach for U(VI) uptake from seawater.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Phosphate-Functionalized Polyethylene with High Adsorption of Uranium(VI)

Shao

Wang

et al. 2017

ACS Omega

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“…This is important for modeling uranium transport in natural waters, but also has importance in Mn hydroxide precipitation steps during radiochemical separations protocols [214,215]. In addition, U(VI) species readily interacts with organic matter associated with soil particles [209] and adsorbs to the organic ligands present in separation columns [216]. Vibrational spectra can provide chemical insight via band frequencies and bandwidths, both of which that aid in the characterization of uranyl surface species and local environmental conditions.…”

Section: Surface Speciation Studied By Ir and Raman Spectroscopiesmentioning

confidence: 99%

Detection and identification of solids, surfaces, and solutions of uranium using vibrational spectroscopy

Haes

Forbes

2018

Coordination Chemistry Reviews

133

128

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The purpose of this review is to provide an overview of uranium speciation using vibrational spectroscopy methods including Raman and IR. Uranium is a naturally occurring, radioactive element that is utilized in the nuclear energy and national security sectors. Fundamental uranium chemistry is also an active area of investigation due to ongoing questions regarding the participation of 5f orbitals in bonding, variation in oxidation states and coordination environments, and unique chemical and physical properties. Importantly, uranium speciation affects fate and transportation in the environment, influences bioavailability and toxicity to human health, controls separation processes for nuclear waste, and impacts isotopic partitioning and geochronological dating. This review article provides a thorough discussion of the vibrational modes for U(IV), U(V), and U(VI) and applications of infrared absorption and Raman scattering spectroscopies in the identification and detection of both naturally occurring and synthetic uranium species in solid and solution states. The vibrational frequencies of the uranyl moiety, including both symmetric and asymmetric stretches are sensitive to the coordinating ligands and used to identify individual species in water, organic solvents, and ionic liquids or on the surface of materials. Additionally, vibrational spectroscopy allows for the in situ detection and real-time monitoring of chemical reactions involving uranium. Finally, techniques to enhance uranium species signals with vibrational modes are discussed to expand the application of vibrational spectroscopy to biological, environmental, inorganic, and materials scientists and engineers.

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“…This is mainly because the formation of Ca/Mg-CO 3 2- -UO 2 2+ complexes has a significant negative effect on U(VI) adsorption [ 34 , 35 ]. Endrizzi et al [ 27 ] and Baghdadi et al [ 36 ] reported that these ternary complexes determined U(VI) behavior in seawater and were hard to be adsorbed. Based on the fact that heavy-metal ions (such as Cu(II), Al(III), Fe(III), and V(IV)) can compete with U(VI) for adsorption sites, and thus significantly decrease the extraction of U(VI) from seawater [ 37 , 38 ].…”

Section: Resultsmentioning

confidence: 99%

Application of poly(amidoxime)/scrap facemasks in extraction of uranium from seawater: from dangerous waste to nuclear power

Zhang

Ouyang

Hou

et al. 2022

J Radioanal Nucl Chem

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To effectively kill microorganisms on scrap facemasks (FMs) surface and provide new material for extracting uranium (U(VI)) from seawater, scrap FMs was treated by N 2 capacitance coupled (CCP) plasma and modified with polyamidoxime (PAO). The obtained PAO/FMs was well characterized and applied as an adsorbent in the extraction of U(VI) from seawater. The effects of environmental conditions on the adsorption capability of PAO/FMs for U(VI) were briefly studied. Results showed that plasma technique can synchronously kill microorganisms and induce acrylonitrile (AN) polymerization on FMs surface. The prepared PAO/FMs presented excellent adsorption capability for U(VI). The experimental results highlighted the application of plasma technique in the management of scrap FMs, and PAO/FMs in the extraction of U(VI) from seawater.

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Impact of the uranium (VI) speciation in mineralised urines on its extraction by calix[6]arene bearing hydroxamic groups used in chromatography columns

Cited by 8 publications

References 25 publications

Phosphate-Functionalized Polyethylene with High Adsorption of Uranium(VI)

Phosphate-Functionalized Polyethylene with High Adsorption of Uranium(VI)

Detection and identification of solids, surfaces, and solutions of uranium using vibrational spectroscopy

Application of poly(amidoxime)/scrap facemasks in extraction of uranium from seawater: from dangerous waste to nuclear power

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