摘要
为提高磁性壳聚糖(MCS)对Cu的吸附效率,本研究通过MCS表面引入ZIF-8,制备了三聚磷酸钠(STPP)交联的MCS复合材料ZIF-8@STPP-MCS,应用于自来水中Cu(Ⅱ)的吸附。采用SEM-EDS、XRD等技术对ZIF-8@STPP-MCS进行了形貌、结构和性能的表征。结果表明:当溶液pH=6,吸附剂投加量0.5 mg/mL时,ZIF-8@STPP-MCS对Cu(Ⅱ)吸附效果最佳,对自来水中Cu(Ⅱ)的脱除率可达99%以上。拟二级动力学和Sips模型较好地描述了ZIF-8@STPP-MCS的吸附过程,最大吸附量为112.8 mg/g。
To improve adsorption efficiency of magnetic chitosan(MCS)for Cu(Ⅱ),ZIF-8@STPP-MCS was prepared by MCS composite materials crosslinked with sodium tripolyphosphate(STPP),and apply it to the adsorption of Cu(Ⅱ)in tap water.The properties of morphology and structure was characterized by SEM-EDS,XRD.The results showed that,the removal rate of Cu(Ⅱ)by ZIF-8@STPP-MCS reached over 99%for Cu(Ⅱ)in tap water,while the pH is 6 and the adsorbent dosage is 0.5 mg/mL.Furthermore,thermodynamic parameter analysis proved that the adsorption is a spontaneous and endothermic process.Besides,the adsorption process followed the pseudo second order dynamics model and Sips model,and the adsorption process has a maximum adsorption capacity of 112.8 mg/g.
作者
黄镜丹
骆骄阳
王珊珊
刘子维
孔丹丹
杨美华
Huang Jingdan;Luo Jiaoyang;Wang Shanshan;Liu Ziwei;Kong Dandan;Yang Meihua(School of Chemical Engineering and Pharmacy,Wuhan University of Engineering,Hubei,430205;Institute of Medicinal Plants,Peking Union Medical College,Chinese Academy of Medical Sciences,Beijing,100193;Analysis and Testing Center,Beijing Institute of Technology,Beijing,102488;Key Laboratory of Medicinal Animal and Plant Resources on the Qinghai Tibet Plateau,Qinghai,810008)
出处
《当代化工研究》
CAS
2024年第16期1-4,共4页
Modern Chemical Research
基金
中国医学科学院协同创新项目“中药生产主要环节外源污染物防控与质量监测提升关键技术研究”(项目编号:2021-I2M-1-071)
国家药监局中药材及饮片质量控制重点实验室项目“多维碳纳米金SECM靶向电蚀技术用于多类型重金属同步智能监测及风险预警研究”(项目编号:2023GSMPA-KL19)
海南省重点研发计划“功能性脱除材料在巴戟天中重金属脱除的应用研究”(项目编号:ZDYF2023SHFZ140)。
