Chitosan and its modifiers have been widely studied for their good biocompatibility and excellent adsorption properties for heavy metal ions. The synthesis and application of modified chitosan, the effects of process variables (such as pH, amount of adsorbent, temperature, contact time, etc.), adsorption kinetics, thermodynamics and the adsorption mechanism on the removal of heavy metal ions are reviewed. The purpose is to provide the latest information about chitosan as adsorbent and to promote the synthesis of modified chitosan and its application in the removal of heavy metals.

中文翻译：

---

改性壳聚糖去除重金属的研究进展

壳聚糖及其改性剂因其良好的生物相容性和对重金属离子的优异吸附性能而被广泛研究。综述了改性壳聚糖的合成及应用、工艺变量（如pH、吸附剂用量、温度、接触时间等）、吸附动力学、热力学及吸附机理对重金属离子去除的影响。目的是提供有关壳聚糖作为吸附剂的最新信息，促进改性壳聚糖的合成及其在去除重金属方面的应用。