Ultrahigh uranium uptake by magnetic magnesium ferrite loaded hydrothermal carbon nanosheets under acidic condition

Li, Xiaofeng; Yang, Li; Wu, Qianxun; Zhang, Meicheng; Guo, Xiaomei; Li, Xing; Ma, Lijian; Li, Shoujian

doi:10.1016/j.cej.2019.02.002

Cited by 54 publications

(15 citation statements)

References 70 publications

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“…Another interesting observation from the results is that the removal of U(VI) increased from 95 to 99% in the presence of competing ions when the initial uranium concentration was 10 mg/L. A similar result has been reported for uranium removal by magnesium ferrite loaded carbon nanosheets (Li et al 2019). The removal percentage achieved here is comparable to the high removal efficiency reported for uranyl acetate using an amyloid-carbon membrane (99.35%) (Bolisetty and Mezzenga 2016).…”

Section: Selectivitysupporting

confidence: 86%

Phosphorylated cellulose nanofibers exhibit exceptional capacity for uranium capture

et al. 2020

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We investigate the adsorption of hexavalent uranium, U(VI), on phosphorylated cellulose nanofibers (PHO-CNF) and compare the results with those for native and TEMPO-oxidized nanocelluloses. Batch adsorption experiments in aqueous media show that PHO-CNF is highly efficient in removing U(VI) in the pH range between 3 and 6. Gelling of nanofiber hydrogels is observed at U(VI) concentration of 500 mg/L. Structural changes in the nanofiber network (scanning and transmission electron microscopies) and the surface chemical composition (X-ray photoelectron spectroscopy) gave insights on the mechanism of adsorption. The results from batch adsorption experiments are fitted to Langmuir, Freundlich, and Sips isotherm models, which indicate a maximum adsorption capacity of 1550 mg/g, the highest value reported so far for any bioadsorbent. Compared to other metals (Zn, Mn, and Cu) and typical ions present in natural aqueous matrices the phosphorylated nanofibers are shown to be remarkably selective to U(VI). The results suggest a solution for the capture of uranium, which is of interest given its health and toxic impacts when present in aqueous matrices.

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Section: Selectivitysupporting

confidence: 86%

Phosphorylated cellulose nanofibers exhibit exceptional capacity for uranium capture

et al. 2020

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“…Magnesium ferrite and modified magnesium ferrite nanomaterials were used as adsorbents for uranium (U) and pertechnetate ( 99 TcO4 − ) removal from water (Table 6). Uranium is a radioactive heavy metal and considered as a potential environmental toxicant (Li et al 2019). Pertechnetate comes to environment through nuclear waste and has longer halflife, which causes long-term radiation risk to flora and fauna (Abdellah et al 2019).…”

Section: Removal Of Radioactives and Other Contaminantsmentioning

confidence: 99%

“…As the toxicity of radioactive metals is several fold higher than normal metal toxicity, it is very much important to remove them from environment. Li et al (2019) synthesized MgFe 2 O 4 loaded carbon nanosheets for uranium removal. Results showed that this nanocomposite gave ultrahigh adsorption capacity (2208 mg/g) of uranium from water.…”

Section: Removal Of Radioactives and Other Contaminantsmentioning

confidence: 99%

“…At present, nearly complete removal of toxic dyes from water has been achieved by using magnesium ferrite nanomaterials (Han et al 2014;Das and Dhar 2020). Additionally, magnesium ferrite nanomaterials showed higher efficiency in removal of Cu, Co, Mn, Ni, Pb, Sr, Cd, Cr, PO 4 3− , NO 3 − , F − , radioactive pollutants and pharmaceuticals from water through different treatment designs (Tang et al 2013a;Rezaei et al 2017;Ivanets et al 2018;Li et al 2019;Verma and Chandrajit 2020;Wang et al 2020;Hoijang et al 2020;El-Khawaga et al 2021;Karthikeyan et al 2021;Tatarchuk et al 2021). These indicated that both cationic and anionic pollutants can be adsorbed on the MgFe 2 O 4 surface.…”

Section: Introductionmentioning

confidence: 99%

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Adsorptive removal of pollutants from water using magnesium ferrite nanoadsorbent: a promising future material for water purification

Uddin

Jeong

2021

Environ Sci Pollut Res

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Nanoadsorbents having large specific surface area, high pore volume with tunable pore size, affordability and easy magnetic separation gained much popularity in recent time. Iron-based nanoadsorbents showed higher adsorption capacity for different pollutant removal from water among other periodic elements. Spinel ferrite nanomaterials among iron-bearing adsorbent class performed better than single iron oxide and hydroxides due to their large surface area, mesoporous pore, high pore volume and stability. This work aimed at focusing on water treatment using magnesium ferrite (MgFe 2 O 4 ) nanomaterials. Synthesis routes, properties and pollutant adsorption were critically investigated to explore the performance of magnesium ferrite in water treatment. Structural and surface properties were greatly affected by the factors involved in different synthesis routes and iron and magnesium ratio. Complete removal of pollutants through adsorption was achieved using magnesium ferrite. Pollutant adsorption capacity of MgFe 2 O 4 and its modified forms was found several folds higher than Fe 2 O 3 and Fe 3 O 4 nanomaterials. In addition, MgFe 2 O 4 showed strong stability in water than other pure iron oxide and hydroxide. Modification with graphene oxide, activated carbon, biochar and silica was demonstrated to be beneficial for enhanced adsorption capacity. Complex formation was suggested as a dominant mechanism for pollutant adsorption. These nanomaterials could be a viable and competitive adsorbent for diverse pollutant removal from water.

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“…Among them, adsorption has become one of the most common and effective methods to treat mine radioactive wastewater because of its high efficiency, simplicity, and low cost. Nowadays, many adsorbent materials have been reported for efficient removal of uranium, such as metal–organic framework, layered double hydroxide, zero-valent iron-based materials, magnetic nanoparticles, and nanocarbon materials. − However, effective and selective removal of U(VI) from mine radioactive wastewater is still far from desirable.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Removal of Uranium(VI) from Wastewater by Polyamidoxime/Polyethyleneimine Magnetic Graphene Oxide

et al. 2019

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Highly efficient removal of U(VI) from mine radioactive wastewater has received a lot of attention. Herein, the polyamidoxime/polyethyleneimine magnetic graphene oxide (mGO-PP) adsorbent was successfully prepared by in situ polymerization of acrylonitrile on magnetic GO (mGO) covalently modified with polyethylenimine (PEI). The mGO-PP was characterized by Fourier transform infrared (FT-IR), scanning electron microscopy, transmission electron microscopy, vibrating sample magnetometer, and X-ray photoelectron spectroscopy (XPS). The maximum adsorption capacity of mGO-PP toward U(VI) was 606.06 mg/g at 298 K and pH 6.0. The removal of U(VI) by mGO-PP for U(VI) was a monolayer chemisorption based on the study of the batch experiment. The calculated thermodynamic parameters indicated that the removal of U(VI) by mGO-PP was a spontaneous and endothermic process. The adsorption mechanism of mGO-PP toward U(VI) was explored by FT-IR and XPS analyses. Furthermore, the removal rate of U(VI) by mGO-PP is 93.68% and the K d value for U(VI) is 444.73 L/g in actual mine radioactive wastewater, and the residual U(VI) concentration (6.37 μg/L) in wastewater was lower than the maximum permissible concentration of uranium in drinking water (30 μg/L) (World Health Organization). This indicated that the mGO-PP composite is a promising adsorbent for efficient removal of U(VI) from practical mine radioactive wastewater.

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Ultrahigh uranium uptake by magnetic magnesium ferrite loaded hydrothermal carbon nanosheets under acidic condition

Cited by 54 publications

References 70 publications

Phosphorylated cellulose nanofibers exhibit exceptional capacity for uranium capture

Phosphorylated cellulose nanofibers exhibit exceptional capacity for uranium capture

Adsorptive removal of pollutants from water using magnesium ferrite nanoadsorbent: a promising future material for water purification

Highly Efficient Removal of Uranium(VI) from Wastewater by Polyamidoxime/Polyethyleneimine Magnetic Graphene Oxide

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