Effective biosorption of U(VI) from aqueous solution using calcium alginate hydrogel beads grafted with amino-carbamate moieties

被引：21
|
作者：
Shehzad, Hamza [1 ]
Zhou, Limin [1 ]
Wang, Yun [1 ]
Ouyang, Jinbo [1 ]
Huang, Guolin [1 ]
Liu, Zhirong [1 ]
Li, Zhao [1 ]
机构：
[1] East China Univ Technol, State Key Lab Nucl Resources & Environm, 418 Guanglan Rd, Nanchang 330013, Jiangxi, Peoples R China
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2019年 / 321卷 / 02期
关键词：
Calcium alginate; Amino-carbamate; Uranium; Biosorption; MULTIWALLED CARBON NANOTUBES; ENHANCED SORPTION; ADSORPTION; CHITOSAN; REMOVAL; URANIUM; ION; NANOCOMPOSITE;
D O I：
10.1007/s10967-019-06631-5
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Novel amino-carbamate moiety grafted calcium alginate hydrogel beads (CA-1) were synthesized by reacting sodium alginate with 4-phenylsemicarbazide followed by ionotropic crosslinking with Ca(II) ions. As compared to pure calcium alginate hydrogel beads (CA), CA-1 exhibited fast kinetics and enhanced sorption capacity towards U(VI) ions, from mild acidic conditions. The sorption kinetic could be described by pseudo-second order equation, with the chemisorption as the rate-controlling step. The sorption isotherm were fitted well by Langmuir (q(m)=233.2mg/g at 298K). CA-1 hydrogel beads exhibited fast kinetic, high sorption capacity and excellent selectivity for U(VI) sorption, thus it could be potentially used for the removal/recovery of U(VI) ions from wastewater.
引用
收藏
页码：605 / 615
页数：11
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