Investigation of thorium (IV) adsorptive behavior onto functionalized magnetite nanoparticles

Akl, Zeinab F.; Ezat, A.

doi:10.1007/s10967-021-07729-5

Cited by 13 publications

(1 citation statement)

References 47 publications

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“…Thus, the removal and recovery of thorium and uranium ions from the effluents are beneficial for both ecological sustainability as well as accomplishment of Th and U from the resource. 20 Researchers have approached various sophisticated techniques for the elimination and restoration of ions such as membrane technologies, 21 chemical precipitation, 22 adsorption, 23 solvent extraction, 24 photoreduction, 25 electrocoagulation, 26 reduction-assisted process, 27 biodegradation, 28 and chromatographic extraction. 29 However, adsorption has been recognized to be the most appealing strategy in contrast to other techniques for the treatment of uranium and thorium ions because of its ease of execution and uniformity.…”

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confidence: 99%

Simultaneous Adsorption of Th(IV) and U(VI) Ions from Aqueous Solutions by a Tannic-Acid-Modified Nanomagnetite Adsorbent

Sharma,

Dhiware,

Sharma

et al. 2023

ACS Appl. Eng. Mater.

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Nuclear wastewater remediation provides an intriguing opportunity to successfully remove and recover radioactive elements, especially Th(IV) and U(VI) ions, since they play a crucial role as nuclear fuel and pose a significant threat to the sustainability of the environment. In the present investigation, magnetic nanoparticles were modified by a polyphenolic compound, tannic acid (TA), to develop a tannic acid@magnetite (TA@Fe3O4) nanocomposite for effective adsorption of Th(IV) and U(VI) ions from wastewater. To more accurately predict the effective adsorption of the ions, adsorbents varying in the mass ratio of TA and Fe3O4 were synthesized, and also the practical utility of the adsorbent was evaluated by employing batch adsorption studies under the conditions of pH, adsorbent dosage, contact time, and initial concentration. The maximum removal efficiency, i.e., 99.42% and 92.63% for Th(IV) and U(VI) ions, respectively, was obtained with a 1:2 ratio of TA@Fe3O4 at pH 6 with 6 mg of absorbent dosage of 10 mL of 50 ppm thorium and uranium solution in 20 min. Further, the experimental data were attributed to the isotherms and kinetic models, corresponding the adsorption system with the Langmuir model of the isotherm and pseudo-second-order kinetics, thus revealing the monolayer chemisorption process of adsorption for both ions. The TA@Fe3O4 nanocomposite exhibited high recyclability with seven adsorption–desorption cycles via magnetic separation, indicating its potential application in wastewater treatment. Hence, on the basis of facile, low-cost precursors for large-scale manufacturing and excellent recyclability, this work presents a potential and promising strategy of the TA@Fe3O4 nanocomposite for enhanced removal of radionuclides for wastewater reclamation.

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Section: Introductionmentioning

confidence: 99%

Simultaneous Adsorption of Th(IV) and U(VI) Ions from Aqueous Solutions by a Tannic-Acid-Modified Nanomagnetite Adsorbent

Sharma,

Dhiware,

Sharma

et al. 2023

ACS Appl. Eng. Mater.

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A comparative investigation of uranium and thorium adsorption behavior on amidoximated copolymeric hydrogel

Akl

2022

J Radioanal Nucl Chem

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This work focuses on investigating the feasibility of using a crosslinked amidoximated copolymeric hydrogel as a potential adsorbent to recover uranium and thorium ions from aqueous media. The hydrogel was synthesized via gamma-irradiation copolymerization and characterized through FTIR, TGA, and SEM. The medium acidity notably affected the adsorption capacity of both ions. The adsorption data was in line with the pseudo-1st-order equation and the Freundlich isothermal model. The thermodynamics analysis showed that the temperature rise promoted the adsorption capacity. The reusability studies highlighted the good performance of the hydrogel up to five regeneration rounds.

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Harnessing magnetically separable iron based adsorbents for enhanced uranium adsorption

Sharma,

Dhiware,

Laddha

et al. 2024

Coordination Chemistry Reviews

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Investigation of thorium (IV) adsorptive behavior onto functionalized magnetite nanoparticles

Cited by 13 publications

References 47 publications

Simultaneous Adsorption of Th(IV) and U(VI) Ions from Aqueous Solutions by a Tannic-Acid-Modified Nanomagnetite Adsorbent

Simultaneous Adsorption of Th(IV) and U(VI) Ions from Aqueous Solutions by a Tannic-Acid-Modified Nanomagnetite Adsorbent

A comparative investigation of uranium and thorium adsorption behavior on amidoximated copolymeric hydrogel

Harnessing magnetically separable iron based adsorbents for enhanced uranium adsorption

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