Advanced Chitosan-based Hydrogels for Heavy Metal and Dye Sequestration: A Critical Review of Synthesis, Mechanisms, and Future Prospects

Key Points

• Hydrogels made from chitosan show effective sequestration of heavy metals and dyes.
• Adsorption capacities for specific metals were demonstrated to exceed 90% in laboratory settings.
• Reviewing synthesis processes and mechanisms highlights advancements in material efficiency.
• Future prospects indicate a potential for scalable solutions to environmental pollution issues.