天津工业大学学报2018，Vol.37Issue(1)：26-31,6.DOI:10.3969/j.issn.1671-024x.2018.01.005
功能化锌金属有机骨架对刚果红染料的吸附
Adsorption of Congo red dye by organic skeleton of functional zinc metal
摘要
Abstract
In order to improve the adsorption and decoloring rate of Congo red in dye wastewater,and reduce its pollution to the environment, zinc metal organic skeleton(MOF-5)and functional zinc metal organic skeleton(EDA/MOF-5)was used as adsorption material to discuss the adsorption of Congo red.The effects of dye concentration, temperature,pH,adsorption time and ionic strength on the properties of adsorption, the adsorption behavior of Langmuir and Freundlich were described,and the adsorption kinetics was explored.The results showed that the adsorption and decolorization rate of EDA/MOF-5 were respectively increased by 13.19 mg/g and 14% respectively. The metal organic skeleton MOF-5 is easier to adsorb the Congo red dye under weak alkaline conditions,and EDA/MOF-5 was less affected by pH.Within the scope of the experiment,with the increase of initial concentration of Congo red and temperature,the adsorption quantity of the EDA/MOF-5 on the Congo red was also increased,the EDA/MOF-5 of its adsorption capacity and decolorization rate was 78.36 mg/g and 98% respectively when the concentration of Congo red was 80 mg/L.Because of the addition of other ions,it competes with the dye molecules for adsorption sites and has a certain inhibitory effect on the adsorption of Congo red.The study showed that the Freundlich model was more suitable for describing the adsorption process and the adsorption process was more consistent with the second order kinetics equation.关键词
功能化锌金属/金属有机骨架/刚果红染料/吸附等温线/吸附动力学Key words
functional zinc metal/metal organic skeleton/Congo red dye/adsorption isotherm/adsorption kinetics分类
化学化工引用本文复制引用
张华,李祥鹏,张雯,高燕,岳盼,李伟..功能化锌金属有机骨架对刚果红染料的吸附[J].天津工业大学学报,2018,37(1):26-31,6.基金项目
国家自然科学基金资助项目(51573135) （51573135）
省部共建分离膜与膜过程国家重点实验室(天津工业大学)开放课题(Z2-201560) （天津工业大学）
天津市高等学校科技发展基金项目(20140305) （20140305）
