Uranium removal from aqueous medium using Co0.5Mn0.5Fe2O4 nanoparticles

El‐Magied, Mahmoud O. Abd; Manaa, El‐Sayed A.; Youssef, Mai M.; Kouraim, Mohamed N.; Dhmees, Abdelghaffar S.; Eldesouky, Ekramy M.

doi:10.1007/s10967-020-07571-1

Cited by 23 publications

(14 citation statements)

References 35 publications

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“…At pH ≤ 4, uranium(VI) is mostly present as (UO 2 ) 2+ (aq), but as the pH rises (≤ 5) (UO 2 ) 2+ hydrolyze to form different cationic species (mono and polynuclear uranium species) such as: [UO 2 OH] + (aq), [(UO 2 ) 2 OH] 3+ (aq), [4,5,8,18,19].…”

Section: Effect Of Ph On the Adsorption Processmentioning

confidence: 99%

A facile and cost-effective adsorbent derived from industrial iron-making slag for uranium removal

Ibrahim

El‐Sheshtawy

El‐Magied

et al. 2021

J Radioanal Nucl Chem

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The Al 2 O 3 -SiO 2 -BFS (AS-BFS) solid adsorbent was developed from blast furnace slag (BFS). The potentiality of the AS-BFS for uranium ion removal from an aqueous medium, via the batch method, was explored and disused in terms of dynamic and isothermal properties. The sorbent exhibited good reusability, a high capacity for uranium ions, and a good specific surface area. The results showed that the sorbent evacuated uranium at about 88.5 mg/g. The sorbent represents a promising waste-derived substitute for other sorbents for water treatment.

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Section: Effect Of Ph On the Adsorption Processmentioning

confidence: 99%

A facile and cost-effective adsorbent derived from industrial iron-making slag for uranium removal

Ibrahim

El‐Sheshtawy

El‐Magied

et al. 2021

J Radioanal Nucl Chem

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“…Kou et al [29] reported that with an increase in solution pH the surface charges of adsorbent-based phosphonic acid become more negative, which enhanced the electrostatic interaction between the U(VI) ions and the phosphonate ligand. Note that the experiments were not conducted beyond pH 6 to avoid the precipitation of U(VI) ions, in which the hydrolysis is more intense and anionic species such as (UO 2 ) 3 (OH) 7-, UO 2 (OH) 3-or the precipitation of UO 2 (OH) 2 is formed because of the excess of OHin the solution [3,18,30].…”

Section: Uranium Adsorptionmentioning

confidence: 99%

Hexagonal Cylinder Mesoporous Sorbent for Separation of Uranium Ions from Nitrate Media

Elshehy

2021

Chem Eng & Technol

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The synthesis of mesoporous silica monoliths-based phosphonate groups (SiO 2 -DPTS) through immobilization of diethylphosphatoethyltriethoxysilane using the post-grafting approach to be applied as a sensitive sorbent for selective separation of U(IV) ions from aqueous solutions is described. The designed SiO 2 -DPTS sorbent was characterized by Fourier transform infrared, scanning electron and highresolution transmission electron microscopy, scanning transmission electron microscopy/energy-dispersive X-ray spectroscopy, N 2 adsorption-desorption, and elemental analysis. The adsorption process was studied under different experimental conditions of pH, concentration, and time. The mechanism of interaction of SiO 2 -DPTS with U(VI) ions was explored and supported by density functional theory (DFT) calculations. This synthesized sorbent allows highly efficient extraction of U(IV) ions from uranyl leach liquor.

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“…In the last few decades, there has been an increasing global concern about the environmental and public health consequences of decommissioning nuclear facilities that reach their end of service life. The post‐operational cleanout (POCO) protocols are expected to generate a significant amount of waste effluent with various radioactive materials that needed to be treated and managed to eliminate their damaging effect 1–6 . The global concern magnified with the leaking of radionuclides to the seawater used for emergency cooling following the Fukushima accidents 2,4 .…”

Section: Introductionmentioning

confidence: 99%

“…The post‐operational cleanout (POCO) protocols are expected to generate a significant amount of waste effluent with various radioactive materials that needed to be treated and managed to eliminate their damaging effect 1–6 . The global concern magnified with the leaking of radionuclides to the seawater used for emergency cooling following the Fukushima accidents 2,4 . The radioactive cesium‐137 and strontium‐90 ions are of particular concern due to its long half‐life (28.78 and 30.17 years, respectively), mobility in the environment, and the spread of the serious hazards to the environment from their high‐dosage emission 7 .…”

Section: Introductionmentioning

confidence: 99%

“…The high mobility of cesium in many biological systems allows it to deposit in the soft tissues all over the body and create an internal hazard like thyroid cancer, especially to the reproductive system 8 . Strontium is also linked to bone cancer leukemia 2 . Therefore, it is important to develop an effective treatment system to remove cesium and strontium from contaminated seawater.…”

Section: Introductionmentioning

confidence: 99%

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Facile synthesis of silica‐polymer monoliths using nonionic triblock copolymer surfactant for efficient removal of radioactive pollutants from contaminated seawater

Abdelmageed

El‐Said

Younes

et al. 2021

J of Applied Polymer Sci

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Here, we introduce a highly porous functional mesoscopically silica‐polymer composite based on silica monolith‐conjugated thiourea/formaldehyde copolymer. The developed nanostructure enables selective and fast removal of the radioactive pollutants strontium (Sr[II]) and cesium (Cs[I]) ions from contaminated seawater. The silica/polymer composite was synthesized by introducing thiourea/formaldehyde solution into tetramethoxy orthosilicate/triblock copolymer emulsion. The chemical and textural features of the synthesized silica/thiourea‐formaldehyde polymer composite (SiO2‐TUF) were characterized using Fourier transform infrared spectroscopy, X‐ray photoelectron spectroscopy, scanning electron microscope, high‐resolution transmission electron microscope, energy dispersive X‐ray analysis, dynamic light scattering, thermal analysis, and N2 adsorption/desorption measurements. The synthesized microporous SiO2‐TUF showed excellent cesium and strontium ions removal ability, reaching a maximum adsorption capacity of 78.2 and 40.3 mg g−1 for Sr(II) and Cs(I), respectively. When tested with seawater contaminated with radioactive cesium and strontium, SiO2‐TUF was able to selectively target Sr(II) and Cs(I) ions. Among the different types of adsorption isotherms investigated, Sips isotherm showed the best fit with R2 > 0.990. The kinetic studies showed that the pseudo‐second‐order model gave the best description of the uptake process.

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Uranium removal from aqueous medium using Co0.5Mn0.5Fe2O4 nanoparticles

Cited by 23 publications

References 35 publications

A facile and cost-effective adsorbent derived from industrial iron-making slag for uranium removal

A facile and cost-effective adsorbent derived from industrial iron-making slag for uranium removal

Hexagonal Cylinder Mesoporous Sorbent for Separation of Uranium Ions from Nitrate Media

Facile synthesis of silica‐polymer monoliths using nonionic triblock copolymer surfactant for efficient removal of radioactive pollutants from contaminated seawater

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