Stepwise extraction of Th(IV) and U(VI) ions with mixed-ligands impregnated resin containing 1,4-diaminoanthraquinone and 1,4-dihydroxyanthraquinone

Hosseini, Mohammad Saeid; Abedi, Fatemeh

doi:10.1007/s10967-014-3366-9

Cited by 9 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hosseini and Abedi [50,51] compared the adsorption performance of SIRs containing 1,4-diaminoantraquinone (DAAQ) with those containing the mixture of DAAQ and 1,4-dihydroxyantraquinone. The results proved that the SIRs with mixed ligands were feasible for the separation of U(VI) from Th(IV).…”

Section: Extractants In Sirsmentioning

confidence: 99%

See 1 more Smart Citation

Recovery and Separation of Metal Ions from Aqueous Solutions by Solvent‐Impregnated Resins

et al. 2016

View full text Add to dashboard Cite

The recovery and separation of metals from aqueous solutions is one of the research hotspots in hydrometallurgy, environment protection, analytical chemistry, etc. Much attention has been paid to solvent-impregnated resins (SIRs) since these were firstly proposed for the extraction of metals. SIRs are characterized by high efficiency and selectivity, convenient preparation, and easy operation because they combine the unique advantages of solvent extraction and ion exchange. The preparation and features of SIRs are summarized and their applications in the extraction of various metals from solutions are reviewed. In addition, the equilibrium, thermodynamics, and sorption kinetics of the metals onto SIRs are elucidated in detail.

show abstract

Section: Extractants In Sirsmentioning

confidence: 99%

“…It was reported that these metals formed the complex ML 2 in the SIRs containing Cyanex 302 (HL) [74]. The pH 50 values, indicating the pH value at which 50 % of the metal ions are extracted, for Co(II) and Ni(II) adsorption were different, which provides the possibility to separate these two metal ions.…”

Section: Common Nonferrous and Ferrous Metalsmentioning

confidence: 99%

Recovery and Separation of Metal Ions from Aqueous Solutions by Solvent‐Impregnated Resins

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Separation of toxic Th(IV) ions is of intense current interest in research and environmental cleanup [3,4]. The traditional preconcentration and separation methods for Th(IV) are liquid-liquid extraction, coprecipitation, liquid membrane and ion-exchange resins, and so forth [5][6][7][8]. These methods often require large amounts of high purity organic solvents, some of which are harmful to health and cause environmental problems.…”

Section: Introductionmentioning

confidence: 99%

Solvent Extraction of Thorium Using 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene

Tran

Tán

Nguyen

2016

Journal of Chemistry

View full text Add to dashboard Cite

A rapid, sensitive, and selective method for determination of thorium based on the complex with ortho-ester tetraazophenylcalix[4]arene (TEAC) was described. In the presence of pH of 4-6, TEAC-Th(IV) complex is extracted from an acidic aqueous solution into chloroform layer. The absorbance intensity of complex was measured by UV-Vis spectrometer at 525 nm and the molar absorptivity was found to be 2.4 × 10 4 . Beer's law was obeyed in the range of 1.0 to 25 × 10 −5 M thorium(IV). The effects of pH, TEAC concentration, and shaking time were also studied. The tolerance limits for several metal ions were calculated. The proposed method was applied to the determination of thorium in synthetic solution and in the monazite sand samples with good results.

show abstract

“…Li et al 25 had studied the adsorption and recovery of U(VI) from low concentration uranium solution by amidoxime modified Aspergillus niger. Hosseini and Abedi 26 had studied the adsorption of Th(IV) and U(VI) on mixed-ligands impregnated resin containing antraquinones with that conventional one. However, the study on the adsorption of U(VI) on bridged β-cyclodextrin is rarely reported.…”

Section: Introductionmentioning

confidence: 99%

Kinetics and Thermodynamics of Adsorption of Benzil-Bridged <i>β</i>-Cyclodextrin on Uranium(VI)

荆鹏飞¹,

刘慧君²,

张勤³

et al. 2016

Acta Physico-Chimica Sinica

View full text Add to dashboard Cite

Sulfated β-cyclodextrin (β-CD) was prepared by the reaction of β-CD with p-toluenesulfonyl chloride at low temperature in aqueous sodium hydroxide. The product was analyzed by Fourier transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance ( 1 H NMR). The novel benzil-bridged β-CD (BB β-CD) was acquired by the reaction of benzil with sulfated β-CD at a molar ratio of 1 : 2. UV spectrophotometry was used to study the synthetic mechanism of BB β-CD and benzil and their adsorption onto U(VI). Scanning electron microscopy (SEM) was used to analyze the surface properties of the materials. The adsorption of BB β-CD onto U(VI) was investigated as a function of pH, contact time, temperature, and interfering ions using the batch adsorption technique. It was found that the adsorption equilibrium of BB β-CD was reached faster than that of benzil. The optimum experimental conditions were pH = 4.5 and shaking for 60 min, achieving the maximum adsorption capacity of 12.16 mg•g -1 and a U(VI) removal ratio of 91.2% . Kinetic studies revealed that the adsorption reached equilibrium within 60 min for U(VI) and followed a pseudo-second-order rate equation. The isothermal data correlated with the Langmuir model better than with the Freundlich model. The thermodynamic data indicated the spontaneous and endothermic nature of the process.

show abstract

Stepwise extraction of Th(IV) and U(VI) ions with mixed-ligands impregnated resin containing 1,4-diaminoanthraquinone and 1,4-dihydroxyanthraquinone

Cited by 9 publications

References 22 publications

Recovery and Separation of Metal Ions from Aqueous Solutions by Solvent‐Impregnated Resins

Recovery and Separation of Metal Ions from Aqueous Solutions by Solvent‐Impregnated Resins

Solvent Extraction of Thorium Using 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene

Kinetics and Thermodynamics of Adsorption of Benzil-Bridged <i>β</i>-Cyclodextrin on Uranium(VI)

Contact Info

Product

Resources

About