Speciation modeling and sorption mechanism for decontamination of naturally occurring radionuclide from sulfuric acid liquor by anion exchange process

Speciation modeling and sorption mechanism for decontamination of naturally occurring radionuclide from sulfuric acid liquor by anion exchange process

Various uranyl sulfate complexes are formed during the digestion of monazite mineral by sulfuric acid. Uranyl sulfate sorption by AMBERJET 4200 Cl has been studied to find out the proper mechanism, equilibrium and kinetics basis. At pH of 3.0 and 0.5 M SO 4 − the dominant solution species of U(VI) i...

Full description

Saved in:
Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry Vol. 314; no. 2; pp. 1063 - 1073
Main Authors: Othman, Sameh H., Ezz Eldin, Azza A., Borai, Emad H., Mahmoud, Wageha H.
Format: Journal Article
Language:English
Published: Dordrecht Springer Netherlands 01-11-2017
Springer
Springer Nature B.V
Subjects:
Adsorption
Anion exchanging
Chemistry
Chemistry and Materials Science
Decontamination
Diagnostic Radiology
Diffusion rate
Endothermic reactions
Equilibrium equations
Hadrons
Heavy Ions
Inorganic Chemistry
Monazite
Nuclear Chemistry
Nuclear energy
Nuclear industry
Nuclear Physics
Parameter estimation
Particle diffusion
Phosphate minerals
Physical Chemistry
Reaction kinetics
Sorption
Speciation
Sulfates
Sulfuric acid
Thermal properties
Uranium
AMBERJET 4200 Cl
Uranium
Uptake kinetics
Sorption isotherms
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Various uranyl sulfate complexes are formed during the digestion of monazite mineral by sulfuric acid. Uranyl sulfate sorption by AMBERJET 4200 Cl has been studied to find out the proper mechanism, equilibrium and kinetics basis. At pH of 3.0 and 0.5 M SO 4 − the dominant solution species of U(VI) is [UO 2 (SO 4 ) 3 ] −4 anionic complex. High sorbent affinity and monolayer sorption mechanism are approved by different isotherms. The rate is found to be controlled by surface adsorption and intra-particle diffusion. The equilibrium equation and kinetic parameters are estimated. The thermodynamic studies reveal that the reaction is endothermic and spontaneous.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-017-5463-z