Highly Efficient Removal of Uranium(VI) From Aqueous Solution Using the Polyethyleneimine Modified Magnetic Chitosan

被引：0
作者：
Zhihui Wang
Yanfei Wang
Chen Yao
机构：
[1] University of South China,School of Chemistry and Chemical Engineering
来源：
Journal of Polymers and the Environment | 2022年 / 30卷
关键词：
Polyethyleneimine; Magnetic chitosan; Adsorption; Uranium(VI);
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this study, Polyethyleneimine modified magnetic chitosan (MCS-PEI) was synthesized by grafting polyethyleneimine onto chitosan and adding magnetic Fe3O4 with sodium polyphosphate as crosslinking agent. The structure of the prepared material was characterized by FT-IR, SEM, EDS, XRD and XPS, which showed MCS-PEI was successfully synthesized. After a series of single factor experiments, the adsorption data fitted well with the Langmuir model (R2 = 0.99), being the maximum adsorption capacity equal 181.8 mg g−1. The pseudo-second-order model (R2 = 0.997) and Dubinin-Radushkevich model (R2 = 0.9598) indicated that the adsorption process was chemical adsorption. And thermodynamic studies showed that the adsorption was spontaneous and exothermic. The adsorption rate decreased by no more than 4% after the four adsorption–desorption experiments. This work illustrates that MCS-PEI is an environmental friendly, efficient and low-cost adsorbent.
引用
收藏
页码：855 / 866
页数：11
相关论文
共 263 条
[1]  
Huang Z(2018)Simultaneous elimination of cationic uranium(VI) and anionic rhenium(VII) by graphene oxide-poly(ethyleneimine) macrostructures: a batch, XPS, EXAFS, and DFT combined study Environ Sci Nano 5 2077-2087
[2]  
Li Z(2020)Investigation of the high U(VI) adsorption properties of phosphoric acid-functionalized heteroatoms-doped carbon materials Solid State Sci 104 1293-2558
[3]  
Wu Q(2019)In situ preparation of chitosan/ZIF-8 composite beads for highly efficient removal of U(VI) Front Chem 7 607-911
[4]  
Zheng L(2019)A new hydrothermal cross-linking ion-imprinted chitosan for high-efficiency uranium removal J Radioanal Nucl Chem 322 901-4164
[5]  
Min ZL(2020)Macroporous ion-imprinted chitosan foams for the selective biosorption of U(VI) from aqueous solution Int J Biol Macromol 164 4155-61
[6]  
Chai Z(2020)Highly selective uranium adsorption on 2-phosphonobutane-1,2,4-tricarboxylic acid-decorated chitosan-coated magnetic silica nanoparticles Chem Eng J 388 124349-3221
[7]  
Wang X(2020)Preparation of three-dimensional fiber-network chitosan films for the efficient treatment of uranium contaminated effluents Water Sci Technol 81 52-1757
[8]  
Shi W(2020)Efficiency and mechanism of adsorption of low-concentration uranium from water by a new chitosan/aluminum sludge composite aerogel Dalton Trans 49 3209-147
[9]  
Jiang C(2017)The preparation of PZS-OH/CNT composite and its adsorption of U(VI) in aqueous solutions J Radioanal Nucl Chem 314 1747-2356
[10]  
Liu Y(2020)N, P and S co-doped carbon materials derived from polyphosphazene for enhanced selective U(VI) adsorption Sci Total Environ 706 136019-261
12345678910