Highly efficient and selective extraction of uranium from aqueous solution using a magnetic device: succinyl-β-cyclodextrin-APTES@maghemite nanoparticles

Helal, Ahmed; Mazarío, Eva; Mayoral, Álvaro; Decorse, Philippe; Losno, R.; Lion, Claude; Ammar, Souad; Hémadi, Miryana

doi:10.1039/c7en00902j

Cited by 37 publications

(17 citation statements)

References 77 publications

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“…Whereas, the use of iron oxide nanoparticles for water remediation as absorbents of metal ions presents several advantages such as their relatively low cost, the efficient recovery of the material by a simple magnetic separation procedure and also its high specific surface area. [287] It has been demonstrated that the absorption capacity of As(III) and As(V) increases from 0.6 to 59.5 mg As•g -1 as the magnetite particle size decreases from 300 to 11 nm because of the exposed surface area but also because the surface become more reactive (decrease of tetrahedral site occupancy). [288][289][290] The main mechanism related with the absorption of pollutants is the surface is the complexation and/or electrostatic interaction, followed by ion exchange between the iron surface and the toxic ions.…”

Section: Water Treatmentmentioning

confidence: 99%

Design strategies for shape-controlled magnetic iron oxide nanoparticles

Roca

Gutiérrez

Gavilán

et al. 2019

Advanced Drug Delivery Reviews

240

206

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Section: Water Treatmentmentioning

confidence: 99%

Design strategies for shape-controlled magnetic iron oxide nanoparticles

Roca

Gutiérrez

Gavilán

et al. 2019

Advanced Drug Delivery Reviews

240

206

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“…The essential characteristic of the Langmuir isotherm are commonly expressed as the separation factor ( R L ) [Eq. ( 5 )] 46 : where c 0 is the initial adsorbate concentration (mg L −1 ). The R L value is related to the strength of the adsorption.…”

Section: Resultsmentioning

confidence: 99%

Facile preparation and highly efficient sorption of magnetic composite graphene oxide/Fe3O4/GC for uranium removal

Yang

Wang

Zhu

2021

Sci Rep

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In this work, we reported for the first time a novel magnetic composite graphene oxide/Fe3O4/glucose-COOH (GO/Fe3O4/GC) that was facilely prepared from glucose through the hydrothermal carbonization and further combination with graphene oxide (GO). The chemical and structural properties of the samples were investigated. By the batch uranium adsorption experiments, the magnetic composite GO/Fe3O4/GC exhibits an excellent adsorption performance and fast solid–liquid separation for uranium from aqueous solution. GO/Fe3O4/GC (the maximum adsorption capacity (Qm) was 390.70 mg g−1) exhibited excellent adsorption capacity and higher removal rate (> 99%) for U(VI) than those of glucose-COOH (GC) and magnetic GC (MGC). The effect of the coexisting ions, such as Na+, K+, Mg2+, Ca2+, and Al3+, on the U(VI) removal efficiency of GO/Fe3O4/GC was examined. The equilibrium sorption and sorption rate for the as-prepared adsorbents well fit the Langmuir model and pseudo second-order kinetic model, respectively. The thermodynamic parameters (ΔH0 = 11.57 kJ mol−1 and ΔG0 < 0) for GO/Fe3O4/GC indicate that the sorption process of U(VI) was exothermic and spontaneous. Thus, this research provides a facile strategy for the preparation of the magnetic composite with low cost, high efficiency and fast separation for the U(VI) removal from aqueous solution.

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“…Removal of uranium from nuclear power polluted wastes has become a major issue in water processing since it can cause severe health and ecological problems. Helal et al developed and efficient IONPs nanosorbent coated with APTES and succinyl-β-cyclodextrin molecules to increase its selectivity for uranium [57]. For other heavy metal ions such as chromium usually found in its anionic form (HCrO 4− , Cr2O 7 2−…”

Section: Examples Of Applications Of Magnetic Iron Oxide Colloids With Positive Impact On the Environmentmentioning

confidence: 99%

Magnetic Iron Oxide Colloids for Environmental Applications

Gallo-Córdova¹,

Almeida²,

María³

et al. 2021

Colloids - Types, Preparation and Applications

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This chapter deals with magnetic colloids with catalytic properties for the treatment of polluted waters and the efficient production of fuel alternatives. This kind of materials presents great advantages such as high surface/volume ratio, reproducibility, selectivity, ability to be magnetic harvested, functionalizable surfaces (e.g. with tunable pores and selective chelators deposited on them), high efficiencies and reusability. In particular, this chapter will consider the case of magnetic iron oxide colloids, which can be easily synthesized at low cost, are biocompatible and presents a well-developed surface chemistry. The most common techniques for the synthesis and functionalization of these magnetic nanoparticles will be reviewed and summarized. The iron oxide nanoparticles present outstanding properties that can be exploited in different aspect of the wastewater treatment such as heavy metals and organic pollutants removal by ionic exchange or adsorption, and degradation of the contaminants by advanced oxidation processes, among others. In the field of alternative energies, they have also been used as catalysts for biofuels production from oil crops, in Fischer-Tropsch reactions for liquid hydrocarbons and many other processes with potential environmental impact.

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Highly efficient and selective extraction of uranium from aqueous solution using a magnetic device: succinyl-β-cyclodextrin-APTES@maghemite nanoparticles

Abstract: The removal of radio-elements, notably uranium, from wastewaters is crucial for public health and environmental remediation.

Cited by 37 publications

References 77 publications

Design strategies for shape-controlled magnetic iron oxide nanoparticles

Design strategies for shape-controlled magnetic iron oxide nanoparticles

Facile preparation and highly efficient sorption of magnetic composite graphene oxide/Fe3O4/GC for uranium removal

Magnetic Iron Oxide Colloids for Environmental Applications

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