Highly efficient extraction of uranyl ions from aqueous solutions using multi-chelators functionalized graphene oxide

Atia, Bahig M.; Gado, Mohamed A.; El‐Magied, Mahmoud O. Abd; Elshehy, Emad A.

doi:10.1080/01496395.2019.1650769

Cited by 49 publications

(10 citation statements)

References 44 publications

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“…The extraction of Cd 2+ ions rose as the temperature increased; it reached its maximum E % (99.9%) at 50 °C. From the successive van’t Hoff Equation (4) [ 42 , 43 , 44 , 45 ].

…”

Section: Resultsmentioning

confidence: 99%

Selective Recovery of Cadmium, Cobalt, and Nickel from Spent Ni–Cd Batteries Using Adogen® 464 and Mesoporous Silica Derivatives

Weshahy

Sakr

Gouda

et al. 2022

IJMS

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Spent Ni–Cd batteries are now considered an important source for many valuable metals. The recovery of cadmium, cobalt, and nickel from spent Ni–Cd Batteries has been performed in this study. The optimum leaching process was achieved using 20% H2SO4, solid/liquid (S/L) 1/5 at 80 °C for 6 h. The leaching efficiency of Fe, Cd, and Co was nearly 100%, whereas the leaching efficiency of Ni was 95%. The recovery of the concerned elements was attained using successive different separation techniques. Cd(II) ions were extracted by a solvent, namely, Adogen® 464, and precipitated as CdS with 0.5% Na2S solution at pH of 1.25 and room temperature. The extraction process corresponded to pseudo-2nd-order. The prepared PTU-MS silica was applied for adsorption of Co(II) ions from aqueous solution, while the desorption process was performed using 0.3 M H2SO4. Cobalt was precipitated at pH 9.0 as Co(OH)2 using NH4OH. The kinetic and thermodynamic parameters were also investigated. Nickel was directly precipitated at pH 8.25 using a 10% NaOH solution at ambient temperature. FTIR, SEM, and EDX confirm the structure of the products.

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“…The extraction of Cd 2+ ions rose as the temperature increased; it reached its maximum E % (99.9%) at 50 °C. From the successive van’t Hoff Equation (4) [ 42 , 43 , 44 , 45 ].

…”

Section: Resultsmentioning

confidence: 99%

Selective Recovery of Cadmium, Cobalt, and Nickel from Spent Ni–Cd Batteries Using Adogen® 464 and Mesoporous Silica Derivatives

Weshahy

Sakr

Gouda

et al. 2022

IJMS

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“…The monolayer adsorption on a homogeneous surface is depicted in this isotherm model. Isotherm can be realized as [59] according to Langmuir theory:

true \frac{C_{e}}{q_{e}} = \frac{C_{e}}{q_{m}} + \frac{1}{q_{m} K_{l}}

…”

Section: Resultsmentioning

confidence: 99%

Separation of Cadmium Using a new Adsorbent of Modified Chitosan with Pyridine Dicarboxyamide derivative and application in different samples

Garoub

Gado

2021

Zeitschrift anorg allge chemie

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Pyridine di‐carboxyamide derivative coupled chitosan (CTPO) is a new adsorbent prepared by coupling N2,N6‐dicarbamothioylpyridine‐2,6‐dicarboxamide with chitosan, which offers an excellent synergistic effect for the extraction of cadmium ions. FT‐IR, X‐ray diffraction, and thermal analysis techniques were used to characterize the modified new chitosan adsorbent. The Langmuir isotherm model accurately represents the adsorption effect with a maximum adsorption capacity of 307 mg/g. It was noted that the adsorption or up‐taking process of cadmium ions corresponded more closely to the pseudo‐second order instead of pseudo‐first order kinetic. The thermodynamic tools ΔS, ΔH and ΔG were also evaluated indicating endothermic and spontaneous adsorption process with a randomness increasing. The prepared new adsorbent is successfully used to extract cadmium ions from the actual leach liquor of Wadi Um‐Gheig ore sample.

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“…Thermodynamic parameters such as Gibbs free energy (Δ G , kJ · mol –1 ), enthalpy change (Δ H , kJ · mol –1 ), and entropy change (Δ S , kJ · mol –1 · K –1 ) were studied. They were calculated from the following Equation (8), Equation (9), and Equation (10):

Δ G = - 2.303 R T \log ({normalK}_{normald})

Δ G = Δ H - T Δ S

\log ({normalK}_{normald}) = Δ S / 2.303 R - Δ H / 2.303 R T

…”

Section: Resultsmentioning

confidence: 99%

Recovery of Uranium(VI) from Sulfate Leach Liquor using Modified Duolite

Yousef

2020

Zeitschrift anorg allge chemie

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Silicate mercapto Duolite composite (SMDC) and activated Duolite A 101 D (AD) were prepared, characterized, and tested for uranium removal from sulfate solution using batch experiment technique. The capability of newly adsorbents for sorption of uranium was estimated and optimized under different controlling variables, including the impact of uranium initial concentration, pH of the medium, equilibrium time, temperatures, dose and interfering ions. Testing of different adsorbents for adsorption isotherms revealed that the achieved experimental data were fitting well with the Langmuir isotherm model with 68.02 mg·g -1 and 208.33 mg·g -1 as theoretical ca-* L. A. Yousef E-Mail: drlamiayousef_77@live.com [a] Nuclear Materials Authority

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Highly efficient extraction of uranyl ions from aqueous solutions using multi-chelators functionalized graphene oxide

Cited by 49 publications

References 44 publications

Selective Recovery of Cadmium, Cobalt, and Nickel from Spent Ni–Cd Batteries Using Adogen® 464 and Mesoporous Silica Derivatives

Selective Recovery of Cadmium, Cobalt, and Nickel from Spent Ni–Cd Batteries Using Adogen® 464 and Mesoporous Silica Derivatives

Separation of Cadmium Using a new Adsorbent of Modified Chitosan with Pyridine Dicarboxyamide derivative and application in different samples

Recovery of Uranium(VI) from Sulfate Leach Liquor using Modified Duolite

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