Abstract Due to the norfloxacin will enter the natural water body with the effluent of the sewage treatment plant and cause water environment pollution, the research on how to effectively remove norfloxacin has become a hot topic. This experiment used hydrochloric acid and sodium hydroxide to study the modification of fly ash. The structure characteristics and properties of modified fly ash were determined by scanning electron microscope, X-ray diffractometer and infrared spectrometer, and the adsorption process of norfloxacin by fly ash was analyzed. It was found that the surface of fly ash modified by acid and alkali was rougher and the voids increased, which provided a rich adsorption site for the adsorption reaction of norfloxacin on fly ash, moreover, the specific surface area of sodium hydroxide modified fly ash increased the most, and the ability to adsorb norfloxacin was the strongest. The adsorption process characteristics showed that the adsorption reaction of norfloxacin is spontaneous, exothermic, disordered, and when the temperature increased, the adsorption amount of norfloxacin by fly ash was decreased, and the adsorption effect of fly ash on norfloxacin was the strongest under the pH = 7.0, yet inhibited when the adding of Ca2+ in the solution.

中文翻译：

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酸碱改性粉煤灰对诺氟沙星的吸附特性比较

摘要 由于诺氟沙星会随着污水处理厂出水进入天然水体，造成水环境污染，如何有效去除诺氟沙星成为研究热点。本实验采用盐酸和氢氧化钠对粉煤灰进行改性研究。采用扫描电镜、X射线衍射仪和红外光谱仪对改性粉煤灰的结构特征和性能进行了测定，分析了粉煤灰对诺氟沙星的吸附过程。发现酸碱改性粉煤灰表面更粗糙，孔隙增多，为诺氟沙星在粉煤灰上的吸附反应提供了丰富的吸附位点，而且氢氧化钠改性粉煤灰的比表面积增加最多，吸附诺氟沙星的能力最强。吸附过程特征表明，诺氟沙星的吸附反应是自发的、放热的、无序的，当温度升高时，粉煤灰对诺氟沙星的吸附量减少，在pH值下粉煤灰对诺氟沙星的吸附作用最强。 = 7.0，但在溶液中加入 Ca2+ 时仍被抑制。