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利用紫外-可见分光光度法跟踪观察了NKA-II树脂吸附间氯苯胺的行为。利用固—液界面吸附的动力学方程,求取表观吸附速率常数(k),测定了平衡吸附量(Qe),分析计算出了吸附质的亲和能(Ua)及吸附势(E)。实验结果表明,NKA-II树脂吸附间氯苯胺的速率随温度升高而增大,随间氯苯胺浓度的增大而减小;当温度一定时,溶质的吸附量随原始浓度(C0)的增加而增加,吸附势则随着吸附量的增加而降低小;吸附质对吸附剂的亲和能也是随着吸附质浓度的增大而减小。
The adsorption of m-chloroaniline by NKA-II resin was observed by ultraviolet-visible spectrophotometry. The kinetic equation of solid - liquid interface adsorption was used to determine the apparent adsorption rate constant (k) and the equilibrium adsorption capacity (Qe). The affinity (Ua) and adsorption potential (E) . The experimental results show that the adsorption rate of m-chloroaniline increases with the increase of temperature and decreases with the increase of the concentration of m-chloroaniline. With the increase of the concentration of m-chloroaniline, the adsorption amount of solute increases with the increase of the initial concentration (C0) And the adsorption potential decreases with the increase of adsorption amount. The affinity of adsorbate to the adsorbent also decreases with the increase of the concentration of adsorbate.