【摘要】 研究了25、30、35℃下酸性橙Ⅱ在活性炭纤维上的吸附平衡、吸附热力学和吸附动力学特性。结果表明,酸性橙Ⅱ在活性炭纤维上的吸附等温线可用Freundlich方程进行描述,吸附为自发的吸热过程,温度升高有利于吸附的进行,主要属于物理吸附;伪二级动力学方程、Elovich方程、颗粒内扩散方程均能很好地描述酸性橙Ⅱ在活性炭纤维上的吸附动力学行为,通过拟合得到了其动力学参数。更多还原

【Abstract】 The adsorption equilibrium,thermodynamics and dynamics of acid orangeⅡon activated carbon fiber(ACF)were determined at 25,30,35 ℃,respectively.The experimental results demonstrated that Freundlich adsorption equation could describe the adsorption process well.The thermodynamic parameters illustrated that the adsorption was a spontaneous and exothermic process,and the adsorption capacity of dye increased with the temperature.The adsorption dynamics data could be well fitted by pseudo second-order equation,intraparticle diffusion equation and Elovich equation.The dynamic parameters of acid orangeⅡadsorption were obtained through the model fitting.This research provides scientific basis for the removal and treatment of acid orangeⅡin water by activated carbon fiber.更多还原