摘要
以阳离子交换树脂和氯化亚铁为原料,经离子交换、炭化工序,制备铁修饰的炭化树脂作为吸附剂.通过对水溶液中诺氟沙星吸附实验的初步结果表明,对诺氟沙星的吸附量可达40.49mg/g.分别用Langmuir和Freundlich方程拟合吸附平衡数据.考察了吸附时间、pH、诺氟沙星浓度及温度等实验条件对吸附效率的影响.在吸附时间3 h、pH6、诺氟沙星初始质量浓度10 mg/L、室温条件下,铁修饰的炭化树脂吸附诺氟沙星的能力较好.诺氟沙星在铁修饰的炭化树脂上的吸附均符合准二级动力学模型.吸附过程为放热过程,吸附等温线符合Freundlich方程.
With cation exchange resin and ferrous chloride as raw material,through ion exchange,carbonization process,the preparation of iron modified carbonized resins as adsorbent.In aqueous solution of norfloxacin adsorption experiment of the preliminary results show that the adsorption quantity of norfloxacin is up to 40.49 mg/g. With the Langmuir and Freundlich equation of adsorption equilibrium data fitting.The effects of experimental parameters such as adsorption time,pH,NOR concentrationand temperature on the adsorption efficiency have been investigated.The adsorption capacity of NOR with iron modified carbonized resin is better under the conditions of adsorption time 3 h, pH 6,NOR concentration 10.0 mg/L,room temperature.The adsorption of NOR with the adsorbent follows the pseudo-second-order kinetics model.The adsorption process is an exothermic one,and the desorption data can be fitted with Freundlich isotherm models.
出处
《高师理科学刊》
2014年第2期57-60,共4页
Journal of Science of Teachers＇College and University
关键词
铁修饰的炭化树脂
诺氟沙星
吸附
Fe modified carbonized resin
norfloxacin
desorption
