The municipal sewage sludge was used as an raw material to prepare the sewage sludge-based adsorbent (SSA) by HNO₃ activation, NaOH activation and H₂O₂ oxidation modification. The removal of ciprofloxacin (CIP) and lomefloxacin (LOM) from aqueous solution and the influencing factors were studied. Scanning electron microscopy and Fourier transform infrared spectroscopy were used to characterize the microstructure and functional groups on the surface of SSA. The effects of adsorbent dosage, temperature, the initial pH of solution, the ionic strength and other factors on the removal of CIP and LOM by SSA were investigated. The results showed that the modified SSA activated by 0.1 M HNO₃ was most effective for removal of CIP and LOM. The rough structure of the modified adsorbent could provide more sites for antibiotic adsorption, and the oxygen-containing functional groups were able to form hydrogen bonds to enhance the adsorption of organic matters in solution. When the antibiotic concentration was 10 mg/L, the adsorption capacity of CIP and LOM was 8.95 and 7.28 mg/g, and removal rates were 90% and 73%, respectively. The adsorption process of CIP and LOM on the modified SSA was in accordance with the pseudo-second-order model, and Langmuir isotherm equation could well describe the adsorption behavior of CIP and LON on the modified SSA, which proved that adsorption process was monolayer chemisorption. The adsorbent removed 84% CIP and 67% LOM after 5 cycles, thus providing an efficient and sustainable way of antibiotic removal. 

以城市污水处理厂剩余污泥为原料, 通过HNO₃活化、NaOH活化以及H₂O₂氧化改性制备吸附剂(sewage sludge-based adsorbent, SSA), 研究其对水中环丙沙星(CIP)和洛美沙星(LOM)的去除及影响因素。采用扫描电子显微镜和傅里叶红外转换光谱对吸附剂表面形貌及官能团进行表征, 采用控制变量静态吸附实验方法, 考察吸附剂投加量、温度、溶液pH和离子强度等因素对吸附剂去除两种抗生素的影响。结果表明: 实验条件下, 经过0.1 M HNO₃活化后的改性吸附剂对两种抗生素的去除效果最好, 改性后吸附剂表面粗糙的结构可为抗生素的吸附提供更多的位点, 表面含氧官能团可以通过形成氢键增强对水中有机物的吸附。当抗生素浓度为10 mg/L时, 吸附剂对CIP和LOM的吸附量分别为8.95和7.28 mg/g, 最高去除率分别为90%和73%。吸附剂对CIP和LOM的吸附过程均符合准二级动力学方程, Langmuir等温方程能够很好地描述吸附剂 对两种抗生素的吸附行为, 主要为单分子层化学吸附。经5次循环使用后, 吸附剂对CIP和LOM的去除率仍可达84%和67%。研究结果可为抗生素污染控制提供一条经济有效的技术途径。