Water pollution is a major environmental issue with the rapid development of industry. Therefore, advanced technologies and materials are needed to remove pollutants from contaminated waters. The adsorption process displays many advantages such as high adaptability and removal efficiency for water sources of varying quality. Hydrogels have recently attracted attention due to their high adsorption capacity and structural stability, yet several issues remain to be explored, such as the number of reuse and engineering applications. Here, we review hydrogels for the removal of methylene blue from wastewater, with focus on hydrogel preparation and properties, adsorption performance and mechanisms, reusability and comparison with biological and chemical oxidation methods.

随着工业的快速发展，水污染是一个重大的环境问题。因此，需要先进的技术和材料来去除受污染水体中的污染物。该吸附工艺对不同水质的水源具有适应性强、去除效率高等优点。水凝胶由于其高吸附能力和结构稳定性最近引起了人们的关注，但仍有几个问题有待探索，例如重复使用的数量和工程应用。在这里，我们回顾了用于从废水中去除亚甲基蓝的水凝胶，重点是水凝胶的制备和性能、吸附性能和机制、可重复使用性以及与生物和化学氧化方法的比较。