Separation of Thorium Ions Using Synthesized Zeolite–Phosphate Composite from Sulfate Solution

Zeolite modified with phosphate (Z/P) was synthesized and tested for Th 4+ adsorption. The optimum adsorption conditions are as follows: pH 3.5, contact time of 30 min, 0.1 g of Z/P, initial Th 4+ concentration of 400 mg/L, 20% tributyl phosphate (TBP) in toluene as solvent, and room temperature. Ki...

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Bibliographic Details
Published in:Radiochemistry (New York, N.Y.) N.Y.), 2020-03, Vol.62 (3), p.368-380
Main Authors: Yousef, L. A., Bakry, A. R., Ahmad, A. A., Alshami, A. S.
Format: Article
Language:English
Subjects:
Adsorption
Chemical synthesis
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Nuclear Chemistry
Reaction kinetics
Room temperature
Sandstone
Thorium
Toluene
Zeolites
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Summary:Zeolite modified with phosphate (Z/P) was synthesized and tested for Th 4+ adsorption. The optimum adsorption conditions are as follows: pH 3.5, contact time of 30 min, 0.1 g of Z/P, initial Th 4+ concentration of 400 mg/L, 20% tributyl phosphate (TBP) in toluene as solvent, and room temperature. Kinetics and equilibrium parameters of the Th 4+ adsorption onto Z/P were determined. The maximum sorption capacity determined using the Langmuir model reached 92.59 mg/g. The Th 4+ adsorption onto Z/P follows a pseudo-second-order kinetic model. Th 4+ can be efficiently desorbed from the loaded Z/P with 1 M HNO 3 solution. The optimized conditions were applied to the thorium adsorption from a conglomerate sandstone sample of Abu El Toyour, eastern side of Wadi El Sahu, Southwestern Sinai, Egypt.
ISSN:1066-3622
1608-3288
DOI:10.1134/S1066362220030091