Mahramanlioğlu M, Kizilcikli I, Biçer I O, Tunçay M
Istanbul University, Engineering Faculty, Chemistry Department, Turkey.
J Environ Sci Health B. 2000 Mar;35(2):187-200. doi: 10.1080/03601230009373263.
The removal of 2,4-D (2,4-dichlorophenoxyacetic acid) from aqueous solutions by activated spent bleaching earths (SBE) was studied at 20 degrees C. Experiments were performed as a function of time, initial concentration, dose and particle size of the adsorbent. The Langmuir and Freundlich adsorption equations were fitted by the adsorption data obtained. The values of Langmuir and Freundlich constants were determined. The adsorption kinetic was found to follow Lagergren equation. Both the boundary layer and intraparticle diffusion played important roles in the adsorption rate of 2,4-D. As the size of the adsorbent increased, the time to reach equilibrium increased but adsorption capacity decreased.
在20℃下研究了用活性废漂白土（SBE）从水溶液中去除2,4-二氯苯氧乙酸（2,4-D）。实验根据吸附剂的时间、初始浓度、剂量和粒径进行。用获得的吸附数据拟合了朗缪尔和弗伦德里希吸附方程。确定了朗缪尔和弗伦德里希常数的值。发现吸附动力学符合拉格伦方程。边界层和颗粒内扩散在2,4-D的吸附速率中都起重要作用。随着吸附剂粒径的增加，达到平衡的时间增加，但吸附容量降低。
