壳聚糖基吸附剂在染色废水处理中的应用研究

Application of Chitosan-based Adsorbents in Dyeing Wastewater Treatment

文章介绍改性和复合两种方法制备壳聚糖基吸附剂及其在染色废水处理中的应用。改性制备包括交联、接枝及浸渍改性;复合制备包括与磁性粒子、光催化剂、多孔材料、天然大分子及石墨烯复合。研究表明,改性制备可以提高吸附剂稳定性、耐酸性、选择吸附性,复合制备可以实现吸附协同增效及赋予其他性能,如磁性粒子的可回收及光催化剂的光降解。并指出后续研究可围绕新型交联剂和接枝剂开发、复合吸附剂开发、吸附剂回收和循环利用及实际废水处理等方面展开。

In the article,two methods of preparing chitosan-based adsorbents,namely modification and composition,and their uses in treating dyeing wastewater are introduced.Modification can be achieved by the way of cross-linking,grafting and impregnation.Composition can be obtained by compositing with magnetic particles,photocatalysts,porous materials,natural macromolecules and graphene.It is clearthat modification can improve stability,acid resistance,and selective adsorption of chitosan-based adsorbent.Composition with other materials can achieve adsorption synergies and impart other properties,such as easy recyclability and light induced degradation.The future research can be focused on the development of new crosslinkers and grafting agents,the development of novel composite adsorbents,the recollecting and reuse of adsorbents,and the treatment of actual wastewater.