Insights and perspectives of chitosan-based hydrogels for the removal of heavy metals and dyes from wastewater.

IF 7.7 1区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY

International Journal of Biological Macromolecules Pub Date : 2024-12-28 DOI:10.1016/j.ijbiomac.2024.139280

Tingzheng Yang, Hanfei Gao, Huayi Chen, Xue Xiao, Chunmei Zhao, Haili Gong, Xuechen Li, Lin Liu, Yonglin Liu

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引用次数: 0

Abstract

Water pollution has become an increasingly serious issue, necessitating the design and development of more effective wastewater treatment methods. Chitosan-based hydrogels, owing to their unique structural and chemical properties, have demonstrated high efficiency in removing contaminants. However, the application remains restricted by the scarcity of effective adsorption sites and limited environmental stability. This review summarizes recent advances in the production of chitosan-based hydrogels and their application in the removal of heavy metals and dyes from wastewater. Various methods to improve the adsorption capacity of chitosan-based hydrogels for different heavy metals, anionic, and cationic dyes have been reviewed, and the adsorption mechanisms have been elucidated. In addition, the application of chitosan-based hydrogels for adsorption faces significant challenges, including sensitivity to pH change, the coexistence of multiple pollutants, and difficulties in recycling. This review outlines relevant strategies to overcome these challenges and aims to provide a reference for synthesizing novel, efficient, and environmentally friendly chitosan-based adsorbents. This review aims to offer new ideas and directions for addressing the issue of heavy metal and dye pollution in wastewater.

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水污染已成为一个日益严重的问题，因此有必要设计和开发更有效的废水处理方法。壳聚糖水凝胶因其独特的结构和化学特性，在去除污染物方面表现出极高的效率。然而，其应用仍然受到有效吸附位点稀缺和环境稳定性有限的限制。本综述总结了壳聚糖基水凝胶生产及其在去除废水中重金属和染料方面应用的最新进展。综述了提高壳聚糖基水凝胶对不同重金属、阴离子和阳离子染料的吸附能力的各种方法，并阐明了其吸附机理。此外，应用壳聚糖基水凝胶进行吸附还面临着重大挑战，包括对 pH 值变化的敏感性、多种污染物共存以及回收困难等。本综述概述了克服这些挑战的相关策略，旨在为合成新型、高效、环保的壳聚糖基吸附剂提供参考。本综述旨在为解决废水中重金属和染料污染问题提供新思路和新方向。

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来源期刊

International Journal of Biological Macromolecules 生物-生化与分子生物学

CiteScore

13.70

自引率

9.80%

发文量

2728

审稿时长

64 days

期刊介绍： The International Journal of Biological Macromolecules is a well-established international journal dedicated to research on the chemical and biological aspects of natural macromolecules. Focusing on proteins, macromolecular carbohydrates, glycoproteins, proteoglycans, lignins, biological poly-acids, and nucleic acids, the journal presents the latest findings in molecular structure, properties, biological activities, interactions, modifications, and functional properties. Papers must offer new and novel insights, encompassing related model systems, structural conformational studies, theoretical developments, and analytical techniques. Each paper is required to primarily focus on at least one named biological macromolecule, reflected in the title, abstract, and text.