合成了氧化锆负载改性的高岭土吸附剂,并研究了其对水中F~-的吸附行为。通过XRD和FT-IR对改性前后的高岭土进行表征,结果表明,负载的氧化锆不影响高岭土晶型和骨架结构。吸附实验结果表明,氧化锆改性后的高岭土对F~-有很高的去除效率,其吸附机理包括离子交换和静电作用力,吸附等温线符合Freundlich等温吸附模式,吸附动力学可用拟二级动力学模型拟合。吸附量随着溶液pH值的升高而降低,共存阴离子能抑制F~-在氧化锆负载的高岭土上的吸附。 The zirconia loading modified kaolin adsorbent was synthesized and the adsorption behavior of F ~ - in water was studied. The kaolin before and after modification was characterized by XRD and FT-IR. The results showed that the supported zirconia did not affect the crystalline form and the framework structure of kaolin. Adsorption experiments showed that zirconia modified kaolin had a high removal efficiency for F ~ -. The adsorption mechanism was ion exchange and electrostatic force. The adsorption isotherm was in accordance with Freundlich adsorption isotherm. Kinetic model fitting. The adsorption capacity decreased with the increase of pH value of the solution, and the coexisting anions inhibited the F - adsorption on the kaolinite loaded with zirconia.