Sorption of uranium(VI) from aqueous solution using nanomagnetite particles; with and without humic acid coating

被引：10
作者：
Helal, Aly A. [1 ]
Ahmed, I. M. [1 ,2 ]
Gamal, R. [1 ]
Abo-El-Enein, S. A. [3 ]
Helal, A. A. [1 ]
机构：
[1] Egyptian Atom Energy Author, Hot Labs & Waste Management Ctr, Cairo 13759, Egypt
[2] Jouf Univ, Dept Chem, Coll Sci, Skaka, Saudi Arabia
[3] Ain Shams Univ, Fac Sci, Cairo, Egypt
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2022年 / 331卷 / 07期
关键词：
Sorption; Nanomagnetite; Humic acid coated nanomagnetite; Uranium(VI); FE3O4; NANOPARTICLES; CARBON NANOTUBES; HIGHLY EFFICIENT; REMOVAL; EXTRACTION; MAGNETITE; COMPOSITE; COMPLEXATION; EQUILIBRIUM; ADSORPTION;
D O I：
10.1007/s10967-022-08352-8
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In this study, iron oxide nanoparticles (Fe3O4) and iron oxide nanoparticles with humic acid coatings (Fe3O4/HA) were investigated for the removal of U(VI). The effect of contact time, adsorbent mass, U(VI) concentration, and pH was studied by batch technique. The sorption kinetic data follows pseudo-second order, while the isotherms obey Langmuir with Q(max) values of 238.0, 195.6 mg/g for Fe3O4 and Fe3O4/HA, respectively. According to the study, humic acid decreases the sorption capacity of magnetite due to the formation of a polyanionic organic coating, altering the surface properties of the particles, reducing magnetite aggregation, and stabilizing magnetite suspension.
引用
收藏
页码：3005 / 3014
页数：10
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