Study on the adsorption of heavy metals by a new magnetic hydrogel based on acrylic acid/ acrylamide/ sodium p-styrenesulfonate

被引：0

作者：

Zhang, Haoran ^{[1
]}

Wang, Shifan ^{[1
]}

Zhu, Wenyou ^{[1
]}

Zang, Yunxiao ^{[1
]}

Dong, Liming ^{[1
]}

Du, Xihua ^{[1
]}

机构：

[1] School of Materials and Chemical Engineering, Xuzhou Institute of Technology, Xuzhou,221018, China

来源：

Chinese Journal of Analysis Laboratory | 2022年 / 41卷 / 03期

关键词：

Adsorption - Amides - Ascorbic acid - Carboxylic acids - Fourier transform infrared spectroscopy - Heavy metals - Magnetism - Silica - Styrene - X ray powder diffraction;

D O I：

10.13595/j.cnki.issn1000-0720.2021.042602

中图分类号：

学科分类号：

摘要：

The Fe3 O4 @SiO2 was loaded on acrylic acid (AA)-acrylamide (AM)-sodium p-styrene sulfonate (SSS) terpolymer hydrogel via aqueous solution method to prepare a magnetic hydrogel P (AA / AM / SSS) / Fe3 O4 @ SiO2 with high adsorption capacity. Fourier transform infrared spectroscopy,X-ray powder diffraction, Raman spectroscopy and BET were used to characterize the microstructure of the magnetic hydrogel. The average diameter of the material pore is 3. 1 nm, which belongs to mesoporous material, owning favourable thermal stability. Adsorption assays indicated the magnetic hydrogel possesses a high removal rate toward Pb2 +,Cu2 +, Co2 +,Cd2 + nexcellent selectivity. and Ni2 + . Especially for Pb2 +, the maximum absorbing capacity achieved 497 mg / g,suggesting a The adsorption kinetics study showed that the adsorption process follows the pseudo-second-order kinetic model. Additionally, in the regeneration assays, the saturated adsorption capacity of the magnetic hydrogel remained 265 mg / g after 7 sorption-desorption cycles,indicating a good regeneration ability of this hydrogel. © 2022, Youke Publishing Co.,Ltd. All rights reserved.

引用

页码：273 / 277