Yang Tingzheng, Gao Hanfei, Chen Huayi, Xiao Xue, Zhao Chunmei, Gong Haili, Li Xuechen, Liu Lin, Liu Yonglin
Key Lab of Industrial Fluid Energy Conservation and Pollution Control (Ministry of Education), School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266525, China.
School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China.
Int J Biol Macromol. 2025 Mar;292:139280. doi: 10.1016/j.ijbiomac.2024.139280. Epub 2024 Dec 28.
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.
水污染已成为一个日益严重的问题，因此需要设计和开发更有效的废水处理方法。基于壳聚糖的水凝胶由于其独特的结构和化学性质，在去除污染物方面表现出高效率。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。本综述总结了基于壳聚糖的水凝胶制备及其在去除废水中重金属和染料方面应用的最新进展。综述了提高基于壳聚糖的水凝胶对不同重金属、阴离子和阳离子染料吸附能力的各种方法，并阐明了吸附机制。此外，基于壳聚糖的水凝胶用于吸附面临重大挑战，包括对pH变化敏感、多种污染物共存以及回收困难。本综述概述了克服这些挑战的相关策略，旨在为合成新型、高效且环境友好的基于壳聚糖的吸附剂提供参考。本综述旨在为解决废水中重金属和染料污染问题提供新的思路和方向。
