Removal of uranium from aqueous solution by phosphate functionalized superparamagnetic polymer microspheres Fe3O4/P(GMA-AA-MMA)

被引：24
|
作者：
Yuan, Dingzhong [1 ,2 ]
Xiong, Xin [2 ]
Chen, Long [2 ]
Lv, Yuan [2 ]
Wang, Yun [2 ]
Yuan, Ligang [2 ]
Liao, Shijun [2 ]
Zhang, Qinghua [2 ]
机构：
[1] East China Inst Technol, State Key Lab Breeding Base Nucl Resources & Envi, Nanchang 330013, Peoples R China
[2] East China Inst Technol, Dept Mat Sci & Engn, Nanchang 330013, Peoples R China
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2016年 / 309卷 / 02期
关键词：
Superparamagnetic polymer microspheres; Phosphate group; Uranium(VI); Sorption; SOLID-PHASE EXTRACTION; EFFICIENT REMOVAL; CARBON SPHERES; ION-EXCHANGE; ADSORPTION; U(VI); ACID; VI; TERPOLYMERS; PARTICLES;
D O I：
10.1007/s10967-015-4682-4
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A new phosphate functionalized superparamagnetic polymer sorbent Fe3O4/P(GMA-AA-MMA)-PO4 was developed by functionalizing Fe3O4/P(GMA-AA-MMA) prepared by soap free emulsion polymerization with o-phosphoethanolamine. The adsorption process was spontaneous and endothermic in nature and kinetically followed pseudo second-order model. The maximum monolayer adsorption capacity obtained from the Langmuir model was 274.7 mg g(-1) at 298 K. Fe3O4/P(GMA-AA-MMA)-PO4 could selectively adsorb U(VI) in aqueous solution containing co-existing ions and the selectivity of Fe3O4/P(GMA-AA-MMA)-PO4 could reach up to 77 % at pH 4.5. Furthermore, the novel magnetic sorbent could also be easily separated and recovered from aqueous solutions by an external magnetic field.
引用
收藏
页码：729 / 741
页数：13
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