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[目的]研究水溶液中烯啶虫胺的治理技术。[方法]以烯啶虫胺为吸附质,以化学修饰功能基的吸附树脂为吸附剂,进行静态吸附实验,研究烯啶虫胺在4种树脂上不同温度下(288、303、313 K)的吸附行为。[结果]4种吸附剂对烯啶虫胺的吸附等温线更符合Freundlich方程,且n均大于2。烯啶虫胺在4种吸附剂上的吸附过程均为吸热过程,其中乙基纤维素修饰的吸附树脂具有最佳的吸附性能。吸附过程的焓变为正,吉布斯自由能为负值,熵变为正值。[结论]通过在树脂的表面化学修饰功能基,有效改善树脂对烯啶虫胺的吸附能力,为水溶液中烯啶虫胺的治理技术提供依据。
[Objective] The research aimed to study the treatment of nitenpyram in aqueous solution. [Method] With nitenpyram as adsorbate and chemically modified functional group adsorbent as adsorbent, static adsorption experiments were carried out to study the effect of nitenpyram at different temperatures (288, 303 and 313 K) The adsorption behavior. [Result] The adsorption isotherms of four adsorbents to Nitenpyram fit the Freundlich equation more than 2. The adsorption process of nitenpyram on the four adsorbents was endothermic, among which ethylcellulose modified adsorbent had the best adsorption performance. The enthalpy of the adsorption process becomes positive, Gibbs free energy is negative, and entropy becomes positive. [Conclusion] The chemical modification of the functional groups on the surface of the resin can effectively improve the adsorption capacity of the resin to nitenpyram, and provide the basis for the treatment of nitenpyram in aqueous solution.