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

被引：0
|
作者：
Congcong Wei
Meixia Yang
Yingyuan Guo
Wenkai Xu
Junjie Gu
Minrui Ou
Xiaoping Xu
机构：
[1] Fuzhou University,Key Laboratory of Pharmaceutical Preparations, College of Chemistry
[2] Fuzhou University,Key Laboratory of Bipharmaceutical, College of Chemistry
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2018年 / 315卷
关键词：
Acrylic acid; Acrylamide; Hydrogel; Adsorption; Uranium(VI);
D O I：
暂无
中图分类号：
学科分类号：
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.
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页码：211 / 221
页数：10
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