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

被引：8
|
作者：
Ivanov, N. P. [1 ]
Dran'kov, A. N. [1 ]
Shichalin, O. O. [1 ]
Lembikov, A. O. [1 ]
Buravlev, I. Yu. [1 ]
Mayorov, V. Yu. [1 ]
Balanov, M. I. [1 ]
Rogachev, K. A. [1 ]
Kaspruk, G. D. [1 ]
Pisarev, S. M. [1 ]
Marmaza, P. A. [1 ]
Rastorguev, V. L. [1 ]
Balybina, V. A. [1 ]
Fedorets, A. N. [1 ]
Kaptakov, V. O. [2 ]
Papynov, E. K. [1 ]
机构：
[1] Far Eastern Fed Univ, 10 Ajax Bay, Vladivostok 690922, Russia
[2] Russian Acad Sci, Inst Phys Chem & Electrochem, Bld 4,31 Leninsky Prospect, Moscow 119072, Russia
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2024年 / 333卷 / 03期
关键词：
Uranium; Sorbent; Layered double hydroxides; Magnetic composite materials; Adsorption; EFFICIENT REMOVAL; URANIUM; IONS; SORPTION; POLYETHYLENIMINE; NANOCOMPOSITE; NANOPARTICLES; EXTRACTION; RECOVERY; OXIDES;
D O I：
10.1007/s10967-024-09362-4
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
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 K-d(U(VI) = 0.5-3 x 10(5) mL/g. The materials possess high exchange capacity and selectivity, which makes them suitable sorbents for U(VI) removal.
引用
收藏
页码：1213 / 1230
页数：18
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