新型壳聚糖磁性材料的制备及其染料吸附机理探究

Preparation of a novel chitosan magnetic material and its adsorption mechanism towards dyes

摘要:

为了有效解决染料废水对环境造成的污染, 本文制备了一种铜离子配位螯合的壳聚糖磁性复合材料用于染料废水的吸附. 复合材料Cu@CTS@Fe3O4通过壳聚糖与铜离子的配位螯合及磁性粒子Fe3O4的引入成功制备, 使用FTIR, SEM, TGA对制备出的材料进行了结构和形貌的表征, 同时以活性艳红(RBR)作为吸附对象, 进行了详细的吸附动力学研究和等温吸附研究. 吸附实验表明, 在pH=2时, Cu@CTS@Fe3O4对RBR的吸附能力最大, 为831.22 mg/g. 本研究为壳聚糖基吸附剂在染料废水处理领域的应用提供一些相关参考数据和理论指导.

Abstract:

In order to effectively solve the environmental pollution caused by dye wastewater, a copper ion chelated chitosan magnetic composite was prepared for the adsorption of dye wastewater. The composite Cu@CTS@Fe3O4 was successfully prepared by the coordination chelation of chitosan with copper ion and the introduction of magnetic particles Fe3O4. The structure and morphology of the prepared materials were characterized by FTIR, SEM and TGA. At the same time, the adsorption kinetics and isotherm adsorption of reactive brilliant red (RBR) were studied in detail. The adsorption experiments showed that the adsorption capacity of Cu@CTS@ Fe3O4 to RBR reached the maximum of 831.22 mg/g when pH=2. This study provides some relevant data and theoretical guidance for the application of chitosan-based adsorbents in the field of dye wastewater treatment.