Chitosan and its derivatives are effective for adsorbing dye molecules from aqueous solutions. However, their use can be limited by environmental concerns on their fate after adsorbent saturation. Desorbing dye molecules and regenerating adsorbents are alternatives to disposing spent adsorbent. In this review, most research topics related to regenerating chitosan-based adsorbents for dye removal are summarized and discussed. Numerous desorption agents, such as acids, alkalis, salts, and organic solvents, have been applied to regenerate chitosan-based adsorbents and recover the adsorbed dye molecules. In addition, the mechanism of desorbing dye molecules from these adsorbents is examined to provide information on selecting methods for recovering chitosan-based adsorbents.

壳聚糖及其衍生物可有效地从水溶液中吸附染料分子。然而，由于吸附剂饱和后其命运的环境问题，它们的使用可能受到限制。解吸染料分子和再生吸附剂是处理用过的吸附剂的替代方法。在这篇综述中，总结和讨论了与再生脱乙酰壳多糖基吸附剂有关的大多数研究主题。许多脱附剂，例如酸，碱，盐和有机溶剂，已经被用于再生基于壳聚糖的吸附剂并回收被吸附的染料分子。另外，研究了从这些吸附剂上解吸染料分子的机理，以提供有关回收基于壳聚糖的吸附剂的选择方法的信息。