Graphene Oxide Caged Biopolymer Nanocomposite for Purification of Rare Earth Elements from High Grade Egyptian Monazite Concentrate

El-Din, Ahmed M. Shahr; Monir, Tarek; Borai, Ε. H.

doi:10.1007/s10924-021-02146-x

Cited by 5 publications

(1 citation statement)

References 51 publications

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“…The process takes place in the pH range of 3-5, because in this range, REEs elements occur as cations while Th 4+ forms hydrolysates (Th(OH) 3+ and Th(OH)2 2+ ) having larger ionic diameters than Th 4+ . A mesoporous graphite carbon nitride can be used as an adsorbent for Th 4+ separation from monazite (containing REEs phosphates) [302], while calcium/alginate-GO nanocomposite, for separation of Th 4+ , U 6+ and Fe 3+ [303]. Also peptide-carbon hybrid membranes [304] were synthesized to remove not only Th 4+ but also U 6+ that are present in concentrates of REEs minerals as defects in crystal lattices.…”

Section: 343other Separation-related Applicationsmentioning

confidence: 99%

On membrane-based approaches for rare earths separation and extraction – Recent developments

Kujawa,

Al Gharabli,

Szymczyk

et al. 2023

Coordination Chemistry Reviews

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Section: 343other Separation-related Applicationsmentioning

confidence: 99%

On membrane-based approaches for rare earths separation and extraction – Recent developments

Kujawa,

Al Gharabli,

Szymczyk

et al. 2023

Coordination Chemistry Reviews

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Exploiting carboxymethyl cellulose-starch/alumina nano gel to eliminate Fe(III) from ore leachates of rare earth elements

Murad,

Dakroury,

Abu Elgoud

2023

Cellulose

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The present study describes the development of a novel nano gel of Carboxymethyl Cellulose Starch and Alumina (CMC-St/Al2O3) to purify the leach liquor of rare earth elements (REEs) minerals from Fe(III), which is considered the most contaminating metal in the REE liquor. CMC-St/Al2O3 nano gel was recognized by different analytical techniques such as FT-IR, SEM, TEM, X-ray diffraction, particle size, and thermal analysis. In a batch study, the best conditions for purifying REE from Fe(III) contaminants using CMC-St/Al2O3 nano gel were determined. For an initial concentration of 100 mg L−1, 97.6% of Fe(III) was efficiently adsorbed onto CMC-St/Al2O3 after 15.0 min, pH = 2, and 25 °C. Due to the competition effect, the sorption efficiencies of the binary systems decreased to 68.4%, 72.97%, and 84.71% for the systems Fe(III)/La(III), Fe(III)/Sr(II), and Fe(III)/Cs(I), respectively. 99.9% of Fe(III) is eluted by 0.50 mol L−1 H2SO4. The sorption process was fitted with pseudo-second-order and the Langmuir model based on the error functions: Coefficient of determination (R2), Reduced Chi-square (χ2), The sum of square errors (SSE), and Corrected Akaike Information Criterion (AICc) as well as Residual error plots. The sorption process was spontaneous and exothermic. Finally, a CMC-St/Al2O3 nano gel was used to separate Fe(III) from the monazite liquor minerals and Sela leachate, mineralized from the Rosetta area and Gabal El Sela at Halaib environs, Egypt, with efficiencies of 89.03 and 92.7%, respectively.

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Sorption of cesium and gadolinium ions onto zirconium silico antimonate sorbent from aqueous solutions

Abass

El-Kenany²,

Eid³

2023

Applied Radiation and Isotopes

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Graphene Oxide Caged Biopolymer Nanocomposite for Purification of Rare Earth Elements from High Grade Egyptian Monazite Concentrate

Cited by 5 publications

References 51 publications

On membrane-based approaches for rare earths separation and extraction – Recent developments

On membrane-based approaches for rare earths separation and extraction – Recent developments

Exploiting carboxymethyl cellulose-starch/alumina nano gel to eliminate Fe(III) from ore leachates of rare earth elements

Sorption of cesium and gadolinium ions onto zirconium silico antimonate sorbent from aqueous solutions

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