Synthesis of magnetic S-nZVI nanoparticle and its application for the effective removal of radioactive uranium from seawater

被引：0
|
作者：
Lei, Miao [1 ]
Zhang, Jun [1 ]
Liu, Chang [1 ]
Guo, Junpeng [1 ]
Li, Ye [1 ]
机构：
[1] Wuhan Univ Technol, Sch Resources & Environm Engn, 122 Luoshi Rd, Wuhan 430070, Peoples R China
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2024年
基金：
中国国家自然科学基金;
关键词：
Sulfurized nano zero-valent iron; Uranium removal; Adsorption; Radionuclide; Mechanism; ZERO-VALENT IRON; EFFICIENT REMOVAL; AQUEOUS-SOLUTION; TETRABROMOBISPHENOL; REDUCTION; CARBON;
D O I：
10.1007/s10967-024-09786-y
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Herein, S-nZVI was synthesized to remove U(VI) from seawater. At a S/Fe ratio of 0.18 and pH of 5, adsorption of U(VI) reached equilibrium after 20 min with the removal rate of 97.93%. And the maximum adsorption capacity obtained by Langmuir isothermal model was 1177.09 mg/g. Moreover, S-nZVI exhibited selectivity in the presence of interfering ions, regeneration performance in 5 reuse cycles, and high removal efficiency in actual seawater. Mechanism investigations showed that UO22+ uniformly adsorbed on S-nZVI surface was irreversibly reduced and generated UO2 precipitates due to the electrons provided by S2-, S22- and Fe(II).
引用
收藏
页码：6429 / 6440
页数：12
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