Kinetics of Tungstate and Phytate Adsorption by D201 Resin

Leaching of scheelite ore with phytate is a novel and clean hydrometallurgical method of isolating tungsten, which achieves efficient decomposition under atmospheric pressure. However, realizing the separation and recycling of tungstate and phytate has become an additional and subsequent problem, wh...

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Bibliographic Details
Published in:JOM (1989) 2021-05, Vol.73 (5), p.1337-1343
Main Authors: Luo, Biyun, Liu, Xuheng, Li, Jiangtao, Chen, Xingyu, He, Lihua, Sun, Fenglong
Format: Article
Language:English
Subjects:
Adaptive Metallurgical Processing Technologies for Strategic Metal Recycling
Adsorption
Atmospheric pressure
Boundary conditions
Caustic soda
Chemistry/Food Science
Earth Sciences
Energy consumption
Engineering
Environment
Equilibrium
Experiments
Ion exchange
Kinetics
Leaching
Metallurgy
Physics
Reagents
Resins
Scheelite
Sodium
Temperature
Tungsten oxides
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Summary:Leaching of scheelite ore with phytate is a novel and clean hydrometallurgical method of isolating tungsten, which achieves efficient decomposition under atmospheric pressure. However, realizing the separation and recycling of tungstate and phytate has become an additional and subsequent problem, which had not been encountered in the traditional tungsten metallurgical process. In determining ways to overcome this obstacle, ion exchange methods exhibit promising routes to separate tungstate and phytate. Before performing this new method, it is prudent to study the kinetics of the ion exchange process. The effects of WO 3 concentration, phytate concentration, resin particle size, and reaction temperature were investigated. Results show that a pseudo-second-order model can describe the adsorption kinetic behavior of phytate and tungstate in the mixed solution. The apparent activation energies of WO 3 and phytate, based on the Arrhenius expression, were calculated as 21.4 kJ/mol and 21.8 kJ/mol, indicating that the adsorption processes of phytate and tungstate are diffusion-controlled.
ISSN:1047-4838
1543-1851
DOI:10.1007/s11837-021-04626-w