Precipitation of crystallized hydrated iron(III) vanadate from industrial vanadium leaching solution

Chen, Liang; Liu, Fengqiang; Da-biao, LI

doi:10.1016/j.hydromet.2010.10.002

Cited by 24 publications

(7 citation statements)

References 10 publications

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“…e last fact is not reflected in the log C V � f(log[H + ]) and log C M � f(log[H + ]) diagrams, that is, the main priority of the criterion proposed in this paper for assessing the thermodynamic stability of alkaline earth metal polyvanadates. e existing experimental data [4,5,[18][19][20] confirm the results on the thermodynamic stability of polyvanadates obtained in this paper. e effect of temperature on the thermodynamics stability of hydrocomplexes H i V j O n and solubility of polyvanadates for different temperatures are estimated on the basis of van't Hoff equation [7]:…”

Section: Resultssupporting

confidence: 86%

Thermodynamic Stability Areas of Polyvanadates of Alkaline Earth Metals

Povar

Zinicovscaia

Spînu

et al. 2019

Journal of Chemistry

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A thermodynamic method of the global Gibbs energy variation calculation for describing heterogeneous equilibria of transformations of calcium, strontium, and barium polyvanadates, that occur in systems MeO-V2O5-H2O, where Me is the alkaline earth element, has been developed and used. Its quintessence consists in the thermodynamic analysis of the real conditions of various processes on the basis of their total thermodynamic characteristics. On the basis of the selected thermodynamic data for involved species, the thermodynamic stability areas of solid polyvanadates towards the solution pH and vanadium and alkaline earth metal ion concentrations in heterogeneous mixtures have been established, taking into account the complex formation reactions in multicomponent heterogeneous systems. The existing experimental data confirm the results on the thermodynamic stability of polyvanadates obtained in this paper.

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Section: Resultssupporting

confidence: 86%

Thermodynamic Stability Areas of Polyvanadates of Alkaline Earth Metals

Povar

Zinicovscaia

Spînu

et al. 2019

Journal of Chemistry

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“…We noticed no significant difference of Bragg reflection position and no change in peak intensity. Other iron(III) vanadates, such as FeVO 4 , are characterized by a similar, poorly crystallized structure …”

Section: Resultsmentioning

confidence: 99%

“…Other iron(III) vanadates, such as FeVO 4 , are characterized by a similar, poorly crystallized structure. 25 In order to rule out possible changes in the chemical composition of the stable phase, a qualitative analysis of the solid phase was carried out for selected points, using energydispersive X-ray diffraction (EDXRF). The obtained EDXRF spectra showed the presence of potassium ions in the solid phase, as shown in Figure 9, which compares the obtained spectra for selected solid phases that are in equilibrium with the equilibrium solution and pure Fe(VO 3 ) 3 .…”

Section: Resultsmentioning

confidence: 99%

Solubility, Density, and Viscosity Data for the KVO₃ + Fe(VO₃)₃ + H₂O System from (293.15 to 323.15) K

et al. 2019

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Mutual solubility of potassium vanadate(V) and iron(III) vanadate(V) was measured over a temperature range of (293.15 to 323.15) K. These results were used for the construction of a polytherm section in the KVO3 + Fe(VO3)3 + H2O system. Additionally, the KVO3 influence on the Fe(VO3)3 solubility and the solution density and viscosity interdependence on solution composition were determined. The paper presents also the approximation of the experimental data on the mutual component solubility for this ternary system with the use of mathematical functions. The data are essential in the determination of the optimum operating parameters for the selective precipitation of vanadium compounds from a postleaching solution of the spent vanadium catalyst.

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“…According to the relevant developed theories depicted, the vanadium concentration crucially affects the processes of nucleation and growth during crystallization . Experiments investigating the effects of varied vanadium mass concentrations (from 2.5 g/L to 20 g/L) on the crystallization were performed under the conditions of the solution pH value of 2.0 and the temperature of 90 ± 1 °C.…”

Section: Resultsmentioning

confidence: 99%

Efficient Microwave Irradiation‐Assisted Hydrothermal Synthesis of Ammonium Vanadate Flake

Wang

Zhang

Huang

et al. 2017

Crystal Research and Technology

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The major factors and affection for hydrothermal synthesis of ammonium vanadate in microwave irradiation was investigated and optimized. The obtained material was a pure (NH 4 ) 2 V 6 O 16 phase with regular spindle and rhombic crystal shapes. Transmission electron microscope and selected-area electron diffraction patterns confirmed that the microwave irradiation-assisted hydrothermal treatments altered the growth pattern and expanded the [-1 0 0] interplanar spacing by approximately ß8%-12% compared to the standard powder diffraction file data.

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Precipitation of crystallized hydrated iron(III) vanadate from industrial vanadium leaching solution

Cited by 24 publications

References 10 publications

Thermodynamic Stability Areas of Polyvanadates of Alkaline Earth Metals

Thermodynamic Stability Areas of Polyvanadates of Alkaline Earth Metals

Solubility, Density, and Viscosity Data for the KVO₃ + Fe(VO₃)₃ + H₂O System from (293.15 to 323.15) K

Efficient Microwave Irradiation‐Assisted Hydrothermal Synthesis of Ammonium Vanadate Flake

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Precipitation of crystallized hydrated iron(III) vanadate from industrial vanadium leaching solution

Cited by 24 publications

References 10 publications

Thermodynamic Stability Areas of Polyvanadates of Alkaline Earth Metals

Thermodynamic Stability Areas of Polyvanadates of Alkaline Earth Metals

Solubility, Density, and Viscosity Data for the KVO3 + Fe(VO3)3 + H2O System from (293.15 to 323.15) K

Efficient Microwave Irradiation‐Assisted Hydrothermal Synthesis of Ammonium Vanadate Flake

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Solubility, Density, and Viscosity Data for the KVO₃ + Fe(VO₃)₃ + H₂O System from (293.15 to 323.15) K