Solvent Extraction and Separation of Thorium(IV) from Chloride Media by a Schiff Base

Cheira, Mohamed F.; Orabi, Adel S.; Atia, Bahig M.; Hassan, Sami M.

doi:10.1007/s10953-018-0740-1

Cited by 40 publications

(12 citation statements)

References 33 publications

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“…A set of technologies were forerun to separate thorium ions from its solutions, and these methods were chemical precipitation [4], ion exchange [5,6], liquid-liquid extraction [7][8][9], and adsorption [10][11][12]. Amongst these techniques, adsorptions are typical extensively utilized for separating heavy and radioactive metal ions on laboratory and industrial scales, because this method is low-cost, environmentally compatible and very efficient [13].…”

Section: Introductionmentioning

confidence: 99%

Performance of poly sulfonamide/nano-silica composite for adsorption of thorium ions from sulfate solution

Cheira

2020

SN Appl. Sci.

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A new composite of poly sulfonamide/nano-silica composite (PSA/silica) was synthesized from the polymerization of sulfonamide in the presence of the prepared nano-silica. The prepared nano-silica, poly sulphonamide (PSA), and PSA/ silica composites were utilized for Th(IV) adsorption from sulfate solution. These composites described by XRD, surface area analysis, SEM-EDX, and FT-IR techniques. The influence parameters on the Th(IV) adsorption were pH solution, ionic strength, contact time, adsorbent dose, Th(IV) concentration, and temperature besides the coexisting ions. At best parameters (pH4, 0.1 g adsorbent amount, and 45 min contact time), 200 mg/L Th(IV) ions were quantitatively adsorbed from 100 mL solution. The maximum uptake capacities of the nano-silica, PSA, and PSA/silica composites attained 122, 75, and 197 mg/g at 298 K. From the kinetic and equilibrium data were found to the adsorption processes of three composites fitted well with kinetic model of pseudo-second-order and Langmuir adsorption isotherm model. Thermodynamic studies resulted that negative values for ∆H° indicated an exothermic while positive values ∆S° showed random behavior for Th(IV) adsorption, while negative values of ∆G° indicated spontaneous Th(IV) adsorption. The maximum Th(IV) desorption from the loaded adsorbents performed by 0.1 M/L HCl.

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Section: Introductionmentioning

confidence: 99%

Performance of poly sulfonamide/nano-silica composite for adsorption of thorium ions from sulfate solution

Cheira

2020

SN Appl. Sci.

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“…The kinetic parameters are helpful for the prediction of adsorption rate and give important information for designing and modeling extraction processes. The mechanism of uranium adsorption by AD or SMDC and the rate constants of the of the adsorption process were determined using pseudo‐first and second order . The pseudo‐first order kinetic model is represented by the following Equation (3):

\log (q_{normale} - q_{normalt}) = \log (q_{normale}) - ({normalK}_{1} / 2.303) 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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“…Recently, Wiecka and coworkers applied pyridinium derivatives containing an imidoamide or imine moiety as novel extractants for the recovery of palladium(II) and platinum(IV) from model chloride aqueous solutions [15], while Bhargava and Uma synthesized a new Schiff base called N-(4-hydroxy-3-methoxy benzylidene)-biphenyl-4-amine) and used it for the adsorption of copper(II) ions [16]. Another compound, (E)-4-(2-hydroxyethyl imino)pentan-2-one (AcEt), was utilized during solvent extraction in the separation of thorium(IV) metal ions from chloride media [17]. Schiff bases were also applied in polymer membranes for the recovery of metal ions (e.g., Mashhadizadeh and Sheikhshoaie used a bis [5-((4-nitrophenyl)azo salicylaldehyde as a carrier in polymer inclusion membrane for the removal of mercury(II) ions [18]).…”

Section: Introductionmentioning

confidence: 99%

2,6-Bis((benzoyl-R)amino)pyridine (R = H, 4-Me, and 4-NMe2) Derivatives for the Removal of Cu(II), Ni(II), Co(II), and Zn(II) Ions from Aqueous Solutions in Classic Solvent Extraction and a Membrane Extraction

et al. 2021

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In this paper, the application of new substituted 2,6-bis((benzoyl-R)amino)pyridine (R = H, 4-Me, and 4-NMe2) derivatives for the recovery of copper(II), nickel(II), cobalt(II), and zinc(II) ions from aqueous solutions was described. The structures of the synthesized compounds were confirmed by nuclear magnetic resonance spectroscopy (NMR), electrospray ionization high-resolution mass spectrometry (ESI HRMS), and tandem mass spectrometry methods (HCD MS/MS). Three different derivatives of 2,6-bis((benzoyl-R)amino)pyridine were used as carriers in membrane processes and as extractants in classic solvent extraction. In each case, the single derivative recovery was carried out on a model solution that contained only one type of metal ions. Spectrophotometry studies were performed to determine the stability constants of the complexes formed by the synthesized species with analyzed metals ions. The results obtained indicate that the synthesized compounds form stable complexes with Cu(II), Ni(II), Co(II), and Zn(II) ions and can be used in both types of studied recovery processes. However, the effectiveness of the synthesized compounds in the recovery of metal ions depends both on the structure of compounds and properties of metals as well as on their concentration.

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Solvent Extraction and Separation of Thorium(IV) from Chloride Media by a Schiff Base

Cited by 40 publications

References 33 publications

Performance of poly sulfonamide/nano-silica composite for adsorption of thorium ions from sulfate solution

Performance of poly sulfonamide/nano-silica composite for adsorption of thorium ions from sulfate solution

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

2,6-Bis((benzoyl-R)amino)pyridine (R = H, 4-Me, and 4-NMe2) Derivatives for the Removal of Cu(II), Ni(II), Co(II), and Zn(II) Ions from Aqueous Solutions in Classic Solvent Extraction and a Membrane Extraction

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