HDEHP-CMPO/SiO2-P: a promising solid-phase extractant for uranium recovery from different acidic media

被引：20
作者：
Khayambashi, Afshin [1 ]
Shu, Qiding [1 ]
Wei, Yuezhou [1 ,2 ]
Tang, Fangdong [3 ]
He, Linfeng [3 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, 800 Dong Chuan Rd, Shanghai 200240, Peoples R China
[2] Guangxi Univ, Coll Resource & Met, 100 Daxue East Rd, Nanning 530004, Peoples R China
[3] Shanghai Inst Measurement & Testing Technol, 1500 Zhang Heng Rd, Shanghai 201203, Peoples R China
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2018年 / 316卷 / 01期
关键词：
Uranium; Solid-phase extraction; Acidic media; HDEHP-CMPO/SiO2-P; PHENYL PHOSPHORIC-ACID; NUCLEAR-POWER-PLANTS; AQUEOUS-SOLUTIONS; SOLVENT-EXTRACTION; ACTIVATED CARBON; DI-(2-ETHYLHEXYL)-PHOSPHORIC ACID; SYNERGISTIC MIXTURES; ENHANCED EXTRACTION; AMBERLITE XAD-16; BUTYL PHOSPHATE;
D O I：
10.1007/s10967-018-5734-3
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A novel macroporous silica-based HDEHP-CMPO impregnated polymeric solid-phase extractant showed an excellent uranium adsorption efficiency from HNO3, HCl, and H2SO4 media with the wide concentration range from the near neutral to high acidic conditions. The adsorption equilibrium data were well described with the Redlich-Peterson isotherm with the relatively high uranium adsorption capacity. Furthermore, the HDEHP-CMPO/SiO2-P showed a significant selectivity for U(VI) among the coexisting elements while the co-extraction of Fe(III) with U(VI) was observed. In desorption process, Fe(III) and U(VI) were separated and desorbed efficiently using the 1 M H2SO4 solution at 55 A degrees C and 1 M NH4HCO3 solution at 25 A degrees C, respectively.
引用
收藏
页码：221 / 231
页数：11
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