磁性阴离子交换树脂对水体中环丙沙星的吸附行为研究  

Study on adsorption behavior of ciprofloxacin in water by magnetic anion exchange resin

作　　者：王晓燕[1] 高将[1] WANG Xiao-yan;GAO Jiang(Institute of Building Intelligence Jiangsu Vocational Institute of Architectural Technology,Xuzhou 221116,China)

机构地区：[1]江苏建筑职业技术学院建筑智能学院,江苏东徐州1221116

出　　处：《化学研究与应用》2023年第11期2614-2619,共6页Chemical Research and Application

基　　金：徐州市科技局应用基础研究项目(KC19049)资助;徐州市重点研发计划项目(KC19221)资助;国家自然科学基金重点项目(51438008)资助;中央高校基本科研业务费资助项目资助。

摘　　要：制备不同Fe_(3)O_(4)含量的丙烯酸系强碱阴离子交换树脂为吸附剂,去除水环境中的环丙沙星(CPX),考察了不同Fe_(3)O_(4)含量的阴离子交换树脂对CPX的吸附行为。结果表明,树脂吸附使其准一级动力学和准二级动力学常数都有所增加,更符合一级动力学方程,R2>0.996,树脂中Fe_(3)O_(4)含量增加可增强吸附性能;Langmuir模型和Freundlich模型对系列树脂吸附CPX的过程均有较好的拟合效果,相关系数R^(2)>0.93,树脂中Fe_(3)O_(4)含量的变化不会改变树脂对CPX的吸附机制;pH值<6.18时,吸附量逐渐增加,pH值在6~8之间时,吸附量最高,当pH>8.76时,吸附量下降明显。较高Fe_(3)O_(4)含量的磁性丙烯酸系阴离子交换树脂受NaCl影响较大。Acrylic strong base anion exchange resins with different Fe_(3)O_(4) contents were prepared as adsorbents to remove ciprofloxa-cin in water environment,and the adsorption behavior of ciprofloxacin by anion exchange resins with different Fe_(3)O_(4) contents was in-vestigated.The results show that the quasi-first-order kinetics and quasi-second-order kinetics constants are increased by resin ad-sorption,which is more in line with the first-order kinetics equation,R^(2)>0.996,and the adsorption performance can be enhanced by increasing the content of Fe_(3)O_(4) in the resin.Langmuir model and Freundlich model of adsorption isotherm fit well,and the change of Fe,04 content in resin will not change the adsorption mechanism.When the pH value is less than 6.18,the adsorption capacity in-creases gradually,when the pH value is between 6 and 8,the adsorption capacity is the highest,and when the pH value is greater than 8.76,the adsorption capacity decreases obviously.The magnetic acrylic anion exchange resin with high Fe_(3)O_(4) content is greatly influenced by NaCl.

关 键 词：磁性树脂 离子交换 吸附 环丙沙星 

分 类 号：O658.13[理学—分析化学]