[1]朱奥燃,张凤娥,龚飞雪.磁性壳聚糖交联沸石的制备及对Cu2+的吸附性能[J].中国给水排水,2022,38(23):116-122.
　ZHUAo-ran,ZHANGFeng-e,GONG Fei-xue.Preparation of Magnetic Chitosan Cross-linked Zeolite and Its Performance for Cu2+ Adsorption[J].China Water & Wastewater,2022,38(23):116-122.
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磁性壳聚糖交联沸石的制备及对Cu2+的吸附性能

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第23期 页码: 116-122 栏目: 出版日期: 2022-12-01
Title:
Preparation of Magnetic Chitosan Cross-linked Zeolite and Its Performance for Cu2+ Adsorption
作者:
朱奥燃1， 张凤娥1， 龚飞雪2
（1.常州大学 环境与安全工程学院，江苏 常州 213000；2.江苏筑森建筑设计有限公司，江苏 常州 213000）
Author(s):
ZHU　Ao-ran1， ZHANG　Feng-e1， GONG Fei-xue2
（1. School of Environmental & Safety Engineering， Changzhou University， Changzhou 213000， China； 2. Design of Centruy Architecture Co. Ltd.， Changzhou 213000， China）
关键词:
壳聚糖;  磁性纳米Fe3O4;  沸石;  交联;  Cu2+吸附
Keywords:
chitosan;  magnetic nano-Fe3O4;  zeolite;  crosslink;  Cu2+ adsorption
摘要:
随着工业化的快速发展，Cu2+污染日益严重。为了减轻Cu2+污染，通过沸石和磁性纳米Fe3O4的联合作用，制备出一种新型多层吸附材料，即磁性壳聚糖交联沸石（FS-CS）以改善壳聚糖的吸附作用，从而达到去除Cu2+的目的。通过扫描电镜能谱仪（SEM-EDS）、X射线衍射仪（XRD）、傅里叶变换红外光谱仪（FTIR）对FS-CS的结构和性能进行表征，并考察FS-CS投加量、吸附时间、pH对吸附Cu2+的影响。结合吸附动力学、吸附热力学等多种方法，探讨其吸附机理。结果表明：FS-CS吸附Cu2+的最佳初始pH为5，最佳吸附时间为4 h，最大吸附容量可达32.705 mg/g，且FS-CS具备良好的分离和可再生能力；FS-CS对Cu2+的吸附过程符合准二级动力学模型，吸附等温线符合Freundlich吸附模型。
Abstract:
The rapid development of industry leads to increasingly serious Cu2+ pollution. To reduce Cu2+ contamination, a new type of multilayer adsorption material, namely magnetic chitosan cross-linked zeolite (FS-CS), was prepared through the combined effect of zeolite and magnetic nano-Fe3O4 to improve the adsorption performance of chitosan, so as to achieve the purpose of Cu2+ removal. The structure and property of FS-CS were characterized by scanning electron microscopy and energy spectrometer (SEM-EDS), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR), and the effects of FS-CS dosage, adsorption time and pH on Cu2+ adsorption were investigated. The adsorption mechanism was discussed by means such as adsorption kinetics and adsorption thermodynamics. The maximum adsorption capacity of FS-CS was up to 32.705 mg/g, the optimal initial pH was 5 and the optimal adsorption time was 4 h, and FS-CS had good separation and regeneration ability. The adsorption process of Cu2+ by FS-CS conformed to the pseudo-second-order kinetic model, and the adsorption isotherm conformed to the Freundlich adsorption model.
更新日期/Last Update: 2022-12-01