摘要
基于沸石咪唑类金属有机骨架(ZIF-67)获得了磁性多孔碳材料(MPC),探讨了pH、时间、温度、刚果红含量、MPC投加量等因素对吸附刚果红的作用。结果表明,MPC对刚果红在较宽pH范围内均具备良好的吸附效果;升高温度、增加刚果红含量、加大MPC投加量对MPC吸附刚果红的过程均有积极促进的作用。准2级动力学模型可解释MPC吸附过程;Langmiure比Freundlich和D-R等温吸附模型吸附能更好解释该吸附刚果红过程,吸附最大容量为69.4 mg/g。此吸附是一个自发的吸热过程。
Magnetic porous carbon materials was obtained based by ZIF-67,the effect of pH,time,temperature,Congo red(CR)content,MPC dosage on Congo red adsorption was discussed.The results showed that MPC had a good adsorption effect on CR in a wide pH range.The adsorption capacity of MPC increased with the increase of temperature,CR content and MPC dosage.The pseudo-second order kinetic model could be used to describe the adsorption process by MPC.Langmuir adsorption model could describe the CR adsorption process better than Freundlich and Dubinin-Radushkevich(D-R)isothermal adsorption model,and the maximum adsorption capacity was 69.4 mg/g.This adsorption was a spontaneous and endothermic process.
作者
彭琳
龚小波
谢春雨
吴莉莉
杨照
刘咏
PENG Lin;GONG Xiaobo;XIE Chunyu;WU Lili;YANG Zhao;LIU Yong(College of Chemistry and Materials Science,Sichuan Normal University;Key Laboratory of Special Waste Waler Treatment,Sichuan Province Higher Education System,Chengdu 610068,China)
出处
《水处理技术》
CAS
CSCD
北大核心
2019年第4期27-30,36,共5页
Technology of Water Treatment
基金
国家自然科学基金资助项目(51708374)
四川省教育厅科研重点项目(18ZA0399)
"特种废水处理"四川省高校重点实验室开放课题基金(SWWT2016-1)
关键词
刚果红
吸附
磁性多孔碳材料
金属有机框架材料
Congo red
adsorption
magnetic porous carbon materials
metal-organic frameworks
