Synthesis and equilibrium studies of titanium vanadate and its use in the removal of some hazardous elements

El-Naggar, I.M.; Zakaria, E. S.; El-Kenany, Wafaa Mohamed; El‐Shahat, M. F.

doi:10.1134/s1066362214010172

Cited by 9 publications

(3 citation statements)

References 15 publications

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“…A displacement of absorption peak may be observed in dependence on chemical bounds. The absorption band at 522 cm -1 is connected with vibrations of Ti-O bound [18]. The strong absorption peak at 1635 cm -1 is conditioned by Differences in IR spectra of the NPF-HTD sorbent before and after strontium sorption were also observed.…”

Section: The Influence Of Strontium Concentration In the Solution On mentioning

confidence: 79%

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Mechanism of strontium sorption by the mixed nickel–potassium ferrocyanide based on hydrated titanium dioxide

Воронина

Семенищев

2015

J Radioanal Nucl Chem

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The influence of surface modification of hydrated titanium dioxide (HTD) by mixed nickel-potassium ferrocyanide (NPF) phase on its selectivity for strontium and mechanism of strontium sorption was studied. It was shown that NPF-HTD sorbent possesses the same selectivity for strontium as the HTD sorbent, but higher static exchange capacity (SEC). The Henry distribution coefficient of strontium from a tap water with pH 7.8 ± 0.1 was 10 (3.0 ± 0.3) L kg -1 ; the SEC, calculated according to Langmuir's isotherm, was 140 mg g -1 . Kinetic studies have shown that strontium sorption is limited by both internal and external diffusion as well as by the rate of chemical transformation of the NPF-HTD sorbent.

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Section: The Influence Of Strontium Concentration In the Solution On mentioning

confidence: 79%

“…(17)(18)(19): 6 is consumed resulting to the decrease of the absorption peak at 2060 cm -1 in IR spectrum; chemical transformation of the surface of the NPF-HTD sorbent saturated by strontium leads to changes of particles size distribution, pores volume and surface area of the sorbent.…”

Section: The Influence Of Strontium Concentration In the Solution On mentioning

confidence: 99%

Mechanism of strontium sorption by the mixed nickel–potassium ferrocyanide based on hydrated titanium dioxide

Воронина

Семенищев

2015

J Radioanal Nucl Chem

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“…Recently, separation of some hazardous cations using titanium vanadate has been reported [14]. Among the methods applied to enhance the selectivity and capacity of adsorbent materials is the enriching of the material matrix with ions of small ionic radii.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Sorption performance of lithium-doped titanium vanadate for Sr²⁺, Fe³⁺and Al³⁺from polluted water

Ali

Gomaa

Naggar

et al. 2015

Desalination and Water Treatment

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2015): Sorption performance of lithium-doped titanium vanadate for Sr 2+ , Fe 3+ and Al 3+ from polluted water, Desalination and Water Treatment,Lithium-doped semicrystalline titanium vanadate (TV) with enhanced sorption properties was obtained using one step precipitation method. Employing this technique at different precipitation conditions produced two lithium-modified forms (LTVI and LTVII). The materials were characterized by X-ray diffraction (XRD), infrared spectroscopy (IR), simultaneous thermal analysis (DTA/TGA), and scanning electron microscopy (SEM). Stability of the materials was investigated. The XRD patterns of different vanadate forms revealed poor crystalline nature with minor changes. Distribution coefficient (K d ) of Sr 2+ , Fe 3+ , and Al 3+ on different vanadate forms was studied and it was found that the selectivity order is Sr 2+ > Fe 3+ > Al 3+ . In addition, it can be seen that LTVI (of higher Li + content) shows the higher sorption efficiency, mechanical, and chemical stability compared to the other forms. The dependence of sorption capacity of LTVI on annealing temperature was also studied. The study of binary separation of metal ions showed that LTVI can be potentially useful for analytical applications. Thermodynamic parameters of the exchange process employing the Van't Hoff equation announced that the exchange reactions are endothermic and spontaneous. Langmuir and Freundlich isotherm models were applied to the experimental data to examine the exchange mechanism.

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Effect of Al:Mo molar ratio on elution performance of 99Mo/99mTc generators based on Al99Mo gels

Amin

Abdel-Galil

El-Kenany

2015

J Radioanal Nucl Chem

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Synthesis and equilibrium studies of titanium vanadate and its use in the removal of some hazardous elements

Cited by 9 publications

References 15 publications

Mechanism of strontium sorption by the mixed nickel–potassium ferrocyanide based on hydrated titanium dioxide

Mechanism of strontium sorption by the mixed nickel–potassium ferrocyanide based on hydrated titanium dioxide

Sorption performance of lithium-doped titanium vanadate for Sr²⁺, Fe³⁺and Al³⁺from polluted water

Effect of Al:Mo molar ratio on elution performance of 99Mo/99mTc generators based on Al99Mo gels

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Synthesis and equilibrium studies of titanium vanadate and its use in the removal of some hazardous elements

Cited by 9 publications

References 15 publications

Mechanism of strontium sorption by the mixed nickel–potassium ferrocyanide based on hydrated titanium dioxide

Mechanism of strontium sorption by the mixed nickel–potassium ferrocyanide based on hydrated titanium dioxide

Sorption performance of lithium-doped titanium vanadate for Sr2+, Fe3+and Al3+from polluted water

Effect of Al:Mo molar ratio on elution performance of 99Mo/99mTc generators based on Al99Mo gels

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Sorption performance of lithium-doped titanium vanadate for Sr²⁺, Fe³⁺and Al³⁺from polluted water