Adsorption of uranium(VI) from aqueous solution using magnetic carboxymethyl chitosan nano-particles functionalized with ethylenediamine

被引：36
作者：
Zhou, Limin [1 ]
Zou, Hongbin [1 ]
Wang, Yu [1 ]
Huang, Zhiwei [1 ]
Wang, Yun [1 ]
Luo, Taian [1 ]
Liu, Zhirong [1 ]
Adesina, Adesoji A. [2 ]
机构：
[1] East China Univ Technol, State Key Lab Nucl Resources & Environm, 418 Guanglan Rd, Nanchang 330013, Peoples R China
[2] Univ New S Wales, Sch Chem Sci & Engn, Sydney, NSW 2035, Australia
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2016年 / 308卷 / 03期
关键词：
Chitosan nano-particles; Isotherms; Kinetics; Magnetic adsorption; Uranium(VI); METAL-IONS; WATER SAMPLES; TOXIC METAL; URANYL-ION; REMOVAL; RESINS; DIETHYLENETRIAMINE; SEPARATION; THORIUM;
D O I：
10.1007/s10967-015-4525-3
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The magnetic carboxymethyl chitosan nano-particles functionalized with ethylenediamine (EDA-MCCS) was synthesized for U(VI) adsorption. The EDA-MCCS showed high affinity and fast kinetic for U(VI) adsorption. The adsorption kinetic could be interpreted by the pseudo-second-order equation. The adsorption isotherm fitted well with the Langmuir equation, with the maximum sorption capacity of 175.4 mg g(-1) at 25 degrees C and pH 4.5. Thermodynamic parameters indicated the exothermic and spontaneous nature of U(VI) adsorption. The EDA-MCCS could be successfully regenerated using 0.20 M EDTA-0.10 M HNO3 as the eluent.
引用
收藏
页码：935 / 946
页数：12
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