Highly efficient removal of uranium(VI) from aqueous solutions by poly(acrylic acid-co-acrylamide) hydrogels

被引：24

作者：

Wei, Congcong ^{[1
,2
]}

Yang, Meixia ^{[1
,2
]}

Guo, Yingyuan ^{[1
,2
]}

Xu, Wenkai ^{[1
,2
]}

Gu, Junjie ^{[1
,2
]}

Ou, Minrui ^{[1
,2
]}

Xu, Xiaoping ^{[1
,2
]}

机构：

[1] Fuzhou Univ, Coll Chem, Key Lab Pharmaceut Preparat, Fuzhou 350108, Fujian, Peoples R China

[2] Fuzhou Univ, Coll Chem, Key Lab Bipharmaceut, Fuzhou 350108, Fujian, Peoples R China

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2018年 / 315卷 / 02期

关键词：

Acrylic acid; Acrylamide; Hydrogel; Adsorption; Uranium(VI); URANYL-ION; ADSORPTIVE FEATURES; COMPOSITE; CHITOSAN; SILICA; WATER; CU2+; PB2+; DYES; VI;

D O I：

10.1007/s10967-017-5653-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this study, poly(acrylic acid-co-acrylamide) (PAAAM) hydrogels were used to remove uranium (VI) ions in wastewater and characterized by FTIR, SEM, EDX. The effects of pH value, coexistence of ionic strength, contact time, initial U (VI) ion concentration and adsorption temperature were also studied. Adsorption data fitted well with pseudo-second-order, intra-particle diffusion model and Langmuir isotherm mode, the maximum adsorption capacity of U(VI) was 713.24 mg g(-1). Thermodynamic analysis shows that the adsorption of U(VI) is spontaneous endothermic. PAAAM hydrogel has excellent regeneration performance, after five time adsorption-desorption cycles, the adsorbent still maintained 99.24% adsorption capacity.

引用

页码：211 / 221

页数：11

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