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

页码：605 / 615

页数：11

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