金属有机骨架HKUST-1对水中微量氨基酸的吸附性能  

Adsorption properties of micropollutants amino acids on metallic organic framework HKUST-1 in aqueous system

作　　者：陆思嘉 马晓雁[1] 李青松 宋亚丽[3] 余齐 朱丽丹 LU Si-jia;MA Xiao-yan;LI Qing-song;SONG Ya-li;YU Qi;ZHU Li-dan(College of Civil Engineering and Architecture,Zhejiang University of Technology, Hangzhou 310014, China;Fujian Engineering and Research Center of Rural Sewage Treatment and Water Safety, Water Resources and Environmental Institute, Xiamen University of Technology, Xiamen 361005, China;School of Civil Enginneering and Architecture, Zhejiang University of Science and Technology, Hangzhou 310023, China)

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310014 [2]厦门理工学院水资源环境研究所,福建省农村污水处理与用水安全工程研究中心,福建厦门361005 [3]浙江科技学院建筑工程学院,浙江杭州310023

出　　处：《中国环境科学》2019年第7期2847-2853,共7页China Environmental Science

基　　金：浙江省自然科学基金资助项目(LY19E080019);福建省农村污水处理与用水安全工程研究中心开放课题(RST201803);国家自然科学基金资助项目(51678527)

摘　　要：采用溶剂热法制备金属有机骨架HKUST-1,选取水源水中检出率较高的酪氨酸(Tyr)、苯丙氨酸(Phe)和色氨酸(Trp)为目标物,开展了HKUST-1吸附微量氨基酸性能的研究.利用XRD和FTIR技术对吸附剂HKUST-1进行了表征和分析,通过吸附动力学、吸附等温线和吸附热力学的研究探讨HKUST-1吸附氨基酸的机理.结果表明,HKUST-1具有高结晶度,对酪氨酸、苯丙氨酸和色氨酸有较好的去除效果,饱和吸附容量分别可达248.65,143.67,140.09mg/g;吸附过程符合Langmuir吸附等温线模型和Lagergren准二级动力学模型;吸附热力学结果表明,HKUST-1去除氨基酸的过程为吸热反应;高吸附容量主要归因于静电相互作用、氢键和π-π相互作用.The metal organic framework HKUST-1 was prepared by solvothermal method.The tyrosine(Tyr),phenylalanine(phe)and tryptophan(Tyr)which were detected frequently in water source were selected as the targets,and their adsorption on HKUST-1 was investigated.The adsorbent characteristic of HKUST-1was analyzed by XRD and FTIR techniques.The adsorption mechanism of amino acids on HKUST-1 was investigated by adsorption kinetics,isotherms and thermodynamics.HKUST-1 had high crystallinity and good removal effects on tyrosine,phenylalanine and tryptophan,saturated adsorption capacity was up to 248.65,143.67 and 140.09mg/g;the adsorption process was in accordance with the Langmuir adsorption isotherm model and the Lagergren quasi-secondary kinetic model;adsorption thermodynamics results showed that HKUST-1 removed amino acids as an endothermic reaction;high adsorption capacity was mainly attributed to electrostatic interaction,hydrogen bonding andπ-πinteraction.

关 键 词：HKUST-1 吸附 消毒副产物前体物 氨基酸 饮用水处理 

分 类 号：X52[环境科学与工程—环境工程]