磁性壳聚糖微球制备及其对Pb^(2+)的吸附性能研究  

Preparation of Magnetic Chitosan Microspheres and Adsorption Properties for Pb^(2+)

作　　者：刘小丹 余国锋 LIU Xiao-dan;YU Guo-feng(College of Technology,HuBei Engineering University,Hubei Xiaogan 432000,China)

机构地区：[1]湖北工程学院新技术学院,湖北孝感432000

出　　处：《广州化工》2022年第21期52-55,67,共5页GuangZhou Chemical Industry

基　　金：湖北工程学院新技术学院科研立项项目(Hgxky04)。

摘　　要：课题利用化学共沉淀法制备出Fe_(3)O_(4)粒子,在壳聚糖溶液中加入Fe_(3)O_(4)粒子进行改性,成功制备出磁性壳聚糖微球。课题以Pb^(2+)作为吸附目标,探究了磁性壳聚糖微球对Pb^(2+)的吸附的最优条件,并对磁性壳聚糖微球进行回收、再利用。结果表明,50 mL,50 mg/L Pb^(2+)溶液投加量为150 mg、pH为6、温度35℃、时间为1 h是吸附实验的最佳条件,制备的吸附剂具有较好的吸附量和Pb^(2+)去除率,且能够实现回收再生,具有环境友好性。Fe_(3)O_(4) particles were prepared by chemical coprecipitation method,and magnetic chitosan microspheres were successfully prepared by adding Fe_(3)O_(4) particles into chitosan solution for modification.Taking Pb^(2+)as the adsorption target,the optimal conditions of Pb^(2+)adsorption by magnetic chitosan microspheres were explored,and the magnetic chitosan microspheres were recovered and reused.The results showed that the optimum conditions for adsorption experiment were as follows:in 50 mL 50 mg/L Pb^(2+)solution the dosage was 150 mg,pH was 6,temperature was 35℃and time was 1 h.The prepared adsorbent has good adsorption capacity and Pb^(2+)removal rate,can be recovered and regenerated,and is environmentally friendly.

关 键 词：壳聚糖 磁性壳聚糖微球 Pb^(2+) 吸附性能 

分 类 号：O647.3[理学—物理化学]