中文摘要：

以高岭土为吸附剂进行2种喹诺酮类抗生素（诺氟沙星和环丙沙星）的静态吸附实验,考察平衡时间、初始浓度、pH值、阳离子种类与强度等对吸附性能的影响.结果表明,高岭土对诺氟沙星和环丙沙星的吸附过程均符合二级反应动力学方程,吸附速率常数分别为0.021 kg/（mg.h）和0.156 kg/（mg.h）;诺氟沙星和环丙沙星可划分为初始快速吸附阶段和随后缓慢吸附阶段;诺氟沙星和环丙沙星的吸附等温线均能较好地符合Freundlich方程和Langmuir方程,吸附容量（lgKf）分别为2.026和2.273,最大吸附量（Qm）分别为135.14 mg/kg和142.86 mg/kg;高岭土对诺氟沙星和环丙沙星的吸附效果在pH值为5时最好,其次在6～8之间;阳离子对高岭土吸附诺氟沙星和环丙沙星有不同程度的影响,价态越高,影响越大;Ca2＋浓度对诺氟沙星和环丙沙星吸附量的影响明显,分别由Ca2＋浓度为0.01 mg/L时的92.07 mg/kg和96.71 mg/kg,降低为Ca2＋浓度0.1mg/L时的58.12 mg/kg和58.85 mg/kg.本研究为含抗生素废水的处理提供了一个途径.

英文摘要：

A static adsorption experiment was conducted to investigate influence of equilibrium time,initial concentration,pH value,and cation species on adsorption of two kinds of quinolone antibiotics（norfloxacin and ciprofloxacin） to kaolin.Results showed that the adsorption process of norfloxacin and ciprofloxacin followed pseudo-second-order kinetic equation,with adsorption rate of 0.021 kg/（mg·h）and 0.156 kg/（mg·h） respectively.Norfloxacin and ciprofloxacin can be divided into the initial fast adsorption stage and the slow adsorption stage;Adsorption isotherms of norfloxacin and ciprofloxacin to kaolin were well described by both Freundlich equation and Langmuir equation,with the adsorption capacity（lgKf） of 2.026 and 2.273 respectively,and the maximum adsorption（Qm） of 135.14 and 142.86 mg/kg respectively;The maximum adsorption of norfloxacin and ciprofloxacin to kaolin can be obtained when the pH value was 5,followed by pH value from 6 to 8;The influence of different cations on norfloxacin and ciprofloxacin adsorption to kaolin varied greatly,the higher valence the more influence;Adsorption of norfloxacin and ciprofloxacin to kaolin decreased with the increase of Ca2＋ concentration,decreasing from 92.07 mg/kg to 58.12 mg/kg for norfloxacin,and from 96.71 mg/kg to 58.85 mg·kg-1 for ciprofloxacin when Ca2＋ concentration decreased from 0.01 mg/L to 0.1mg/L.The results provided with a treatment approach for antibiotics containing wastewater.