Agmatine ligand functionalized magnetic alginate beads for removal of U(VI) ions from solution

被引：12
作者：
Bayramoglu, Gulay [1 ,2 ]
Arica, Mehmet Yakup [1 ]
机构：
[1] Gazi Univ, Biochem Proc & Biomat Res Lab, TR-06500 Ankara, Turkiye
[2] Gazi Univ, Fac Sci, Dept Chem, TR-06500 Ankara, Turkiye
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2024年 / 333卷 / 08期
关键词：
Magnetic nanoparticles; Magnetic alginate beads; Agmatine ligand; U(VI); Adsorption; EQUILIBRIUM; URANIUM(VI); BIOSORPTION; COMPOSITES; ADSORPTION; ADSORBENT; PARTICLES; SORPTION; PH;
D O I：
10.1007/s10967-024-09548-w
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In the presented work, magnetic alginate (MA) beads were prepared and activated with epichlorohydrin and then functionalized with agmatine ligands (MA-A). The materials were analyzed by FTIR, SEM, XRD, and BET methods. The adsorption capacity of the MA-A for U(VI) was 451.4 mg/g. The Langmuir isotherm model well described the experimental data for the adsorption of U(VI) ions. The second-order kinetic model data proposed that the adsorption of U(VI) ions preferred the chemisorption mechanism. The adsorption enthalpy of the MA-A beads for U(VI) ions was 35.4 kJ/mol. After seven cycles of use, the adsorption capacity of MA-A beads was not significantly changed for U(VI) ions. Finally, the functionalization of MA beads with agmatine ligand can be a good candidate for applications for environmental technologies to remove metal ions.
引用
收藏
页码：4197 / 4210
页数：14
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