Composite magnetic sorbents based on magnetic Fe3O4 coated by Zn and Al layered double hydroxide for U(VI) removal from aqueous media

被引：0
|
作者：
N. P. Ivanov
A. N. Dran’kov
O. O. Shichalin
A. O. Lembikov
I. Yu. Buravlev
V. Yu. Mayorov
M. I. Balanov
K. A. Rogachev
G. D. Kaspruk
S. M. Pisarev
P. A. Marmaza
V. L. Rastorguev
V. A. Balybina
A. N. Fedorets
V. O. Kaptakov
E. K. Papynov
机构：
[1] Far Eastern Federal University,
[2] Russky Island,undefined
[3] Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences,undefined
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2024年 / 333卷
关键词：
Uranium; Sorbent; Layered double hydroxides; Magnetic composite materials; Adsorption;
D O I：
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中图分类号：
学科分类号：
摘要：
Composite sorbents based on Fe3O4 and Zn-Al-LDH with different weight ratios of magnetic and sorbing phases were obtained by the precipitation method. The optimal weight ratio of Zn/Fe was 16, which resulted in a 62% increase in hydromechanical strength. The maximum sorption exchange capacity towards U(VI) was 268.65 ± 22.22 mg/g. The efficiency of U(VI) adsorption was not affected by the presence of Cl−, SO42−, NO3− and Na+, Ca2+. The distribution coefficient in a groundwater model solution was Kd(U(VI) = 0.5–3 × 105 mL/g. The materials possess high exchange capacity and selectivity, which makes them suitable sorbents for U(VI) removal.
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页码：1213 / 1230
页数：17
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