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Preparation of a poly(acrylic acid) based hydrogel with fast adsorption rate and high adsorption capacity for the removal of cationic dyes

Journal Article (2019)
Authors

Zhenyu Yuan (East China University of Science and Technology)

Jie Wang (East China University of Science and Technology)

Yiming Wang (TU Delft - ChemE/Advanced Soft Matter)

Qian Liu (TU Delft - ChemE/Advanced Soft Matter)

Yujie Zhong (East China University of Science and Technology)

Yu Wang (East China University of Science and Technology)

Li Li (East China University of Science and Technology)

Stephen F. Lincoln (University of Adelaide)

Xuhong Guo (East China University of Science and Technology, Shihezi University)

Research Group
ChemE/Advanced Soft Matter
Copyright
© 2019 Zhenyu Yuan, Jie Wang, Y. Wang, Q. Liu, Yujie Zhong, Yu Wang, Li Li, Stephen F. Lincoln, Xuhong Guo
To reference this document use:
https://doi.org/10.1039/c9ra03077h
More Info
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Publication Year
2019
Language
English
Copyright
© 2019 Zhenyu Yuan, Jie Wang, Y. Wang, Q. Liu, Yujie Zhong, Yu Wang, Li Li, Stephen F. Lincoln, Xuhong Guo
Research Group
ChemE/Advanced Soft Matter
Issue number
37
Volume number
9
Pages (from-to)
21075-21085
DOI:
https://doi.org/10.1039/c9ra03077h
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Abstract

A biocompatible Dex-MA/PAA hydrogel was prepared through copolymerization of glycidyl methacrylate substituted dextran (Dex-MA) with acrylic acid (AA), which was applied as the adsorbent to remove cationic dyes from aqueous solutions. Dex-MA/PAA hydrogel presented a fast adsorption rate and the removal efficiency of Methylene Blue (MB) and Crystal Violet (CV) reached 93.9% and 86.4%, respectively within one minute at an initial concentration of 50 mg L-1. The adsorption equilibrium data fitted the Sips isotherm model well with high adsorption capacities of 1994 mg g-1 for MB and 2390 mg g-1 for CV. Besides, dye adsorption occurred efficiently over the pH range 3-10 and the temperature range 20-60 °C. Moreover, the removal efficiencies for MB and CV were still >95% even after five adsorption/desorption cycles which indicates the robust nature of the Dex-MA/PAA hydrogel and its potential as an eco-friendly adsorbent for water treatment.