氯苯酚在活性炭纤维上吸附平衡的研究

Study of p-Chlorophenol Adsorption Equilibrium on Activated Carbon Fiber

研究了水溶液中氯苯酚在活性炭纤维上的吸附平衡,实验探讨了反应温度、溶液pH值对活性炭纤维吸附平衡的影响。实验结果表明,平衡吸附量随着温度降低而升高;当pH值<7时,平衡吸附量几乎不随溶液的pH值而变化,而当pH值>7时,氯苯酚在活性炭纤维上的平衡吸附量随着pH值的增加而减小,pH值愈大,平衡吸附量减小的愈快。分别采用Langmuir模型和Freundlich模型描述吸附平衡等温线,在实验范围内Langmuir模型与实验数据吻合较好。

The adsorption equilibrium of p-chlorophenol (PCP) on activated carbon fiber (ACF) in aqueous solution has been studied at various temperature and different pH values. The experimental results shows that the saturated adsorption capacity will be higher at the lower temperature; the saturated adsorption capacity is not sensitive to pH when pH<7, decreases significantly with increasing pH values when pH>7. Langmuir model and Freundlich model are used to describe the adsorption isotherm, it is found that Langmuir model fits the experimental data of adsorption isotherm very well.