Uptake the rare earth elements Nd, Ce, and La by a commercial diatomite: kinetics, equilibrium, thermodynamic and adsorption mechanism

dos Reis, Glaydson S.; Dotto, Guilherme L.; Vieillard, Julien; Oliveira, Marcos L.S.; Lütke, Sabrina F.; Silva, Luis F.O.; Lima, Éder C.; Salau, Nina P.G.; Lassi, Ulla

doi:10.1016/j.molliq.2023.122862

Cited by 9 publications

(2 citation statements)

References 47 publications

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“…The literature indicates that the electronegativity of ions influences adsorption. Species with higher electronegativity are more likely to be separated (Sun et al 2018, dos Reis et al, 2023a. The adsorption capacity for Ce(III) and Nd(III) cations was found to be maximum at pH 3, whereas for La(III) cations, it was highest at pH 4.…”

Section: Effect Of Solution Phmentioning

confidence: 97%

Simultaneous Adsorption of Rare Earth Metal Ions on Chitosan-coated Fumed Silica: Characterization, Kinetics, and Isotherm Studies

Abd Aziz,

Mohd Hir,

Wan Mat Khalir

et al. 2024

Ecol. Eng. Environ. Technol.

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The present study manufactured and utilized the chitosan-coated fumed silica composite (CS@silica) for simultaneous adsorption of rare earth elements (REEs) of Ce(III), La(III), and Nd(III) cations in an aqueous solution. The CS@silica composite underwent characterization using a CHNOS analyzer, Brunauer-Emmett-Teller (BET) surface area analyzer, attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectrophotometer, scanning electron microscope coupled with energy-dispersive X-ray (SEM-EDX) spectrophotometer, and X-ray diffraction (XRD) analyzer. The findings indicated that the CS@silica composite exhibited a lack of pores and possessed a specific surface area of 1.27 m 2 /g. Additionally, it was observed that the composite contained a significant amount of oxygen and nitrogen atoms, which serve as the active sites for the adsorption of REEs. The maximum adsorption capacities of Ce(III), La(III), and Nd(III) cations were determined under optimal experimental conditions. These parameters included a pH of 4, an adsorbent dose of 0.01 g, and an equilibrium duration of 20 min. The maximum adsorption capacities for Ce(III), La(III), and Nd(III) cations were found to be 341, 241, and 299 mg/g, respectively. The adsorption kinetics followed the pseudo-second-order kinetic model. The desorption percentage of REEs-loaded CS@silica composite was significantly low when exposed to deionized water and hydrochloric acid (0.01 and 0.02 M). This suggests that there is a chemical interaction between the REEs and the active site on the surface of the composite. The predominant adsorption process proposed was complexation, with ion exchange and electrostatic contact playing a minor role. The CS@silica composite is highly promising for the recovery of REEs because of its rapid adsorption and high adsorption capacities.

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Section: Effect Of Solution Phmentioning

confidence: 97%

Simultaneous Adsorption of Rare Earth Metal Ions on Chitosan-coated Fumed Silica: Characterization, Kinetics, and Isotherm Studies

Abd Aziz,

Mohd Hir,

Wan Mat Khalir

et al. 2024

Ecol. Eng. Environ. Technol.

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“…4,18 Considerable assessments have been conducted on both naturally occurring and synthetic porous silica as well as silicate-based nanoporous materials that have veried effectiveness as adsorbent frameworks owing to their notable surface area, adsorption ability, and profoundly porous characteristics. 19,20 Diatomite refers to a geological scientic term that describes the naturally occurring consolidation formed by the siliceous skeletal structures of diatoms. 21,22 It represents a harmless biomaterial with substantial resources, thermo-chemical stability, surface area, interfacial reactivity, and retention effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Synergetic and advanced isotherm investigation for the enhancement influence of zeolitization and β-cyclodextrin hybridization on the retention efficiency of U(vi) ions by diatomite

Ahmed,

Saad,

Rafea

et al. 2024

RSC Adv.

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Adsorption of rare earth elements on a magnetic geopolymer derived from rice husk: studies in batch, column, and application in real phosphogypsum leachate sample

dos Reis,

Srivastava,

Taleb

et al. 2024

Environ Sci Pollut Res

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Uptake the rare earth elements Nd, Ce, and La by a commercial diatomite: kinetics, equilibrium, thermodynamic and adsorption mechanism

Cited by 9 publications

References 47 publications

Simultaneous Adsorption of Rare Earth Metal Ions on Chitosan-coated Fumed Silica: Characterization, Kinetics, and Isotherm Studies

Simultaneous Adsorption of Rare Earth Metal Ions on Chitosan-coated Fumed Silica: Characterization, Kinetics, and Isotherm Studies

Synergetic and advanced isotherm investigation for the enhancement influence of zeolitization and β-cyclodextrin hybridization on the retention efficiency of U(vi) ions by diatomite

Adsorption of rare earth elements on a magnetic geopolymer derived from rice husk: studies in batch, column, and application in real phosphogypsum leachate sample

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