阴-阳离子有机膨润土对甲基橙的吸附性能

以阴、阳离子表面活性剂复合改性膨润土制备出了阴—阳离子有机膨润土;研究了甲基橙在阴—阳离子有机膨润土上的吸附行为,结果表明:阴—阳离子有机膨润土吸附染料甲基橙的速率和吸附量均较大,其吸附动力学行为遵循Langmuir方程所描述的规律。平衡吸附量qe与平衡浓度ce之间的关系符合Freundlich和Langmuir等温吸附方程,且阴—阳离子有机膨润土对染料甲基橙的吸附效果要优于粉末活性炭。

Adsorption of Methyl Orange onto Anion-Cation Organobentonite

The anion-cation organobentonite are prepared by incorporating both cationic surfactant bromide cetyltrimethylammonium(CTMAB) and anionic surfactant sodium dodecyl sulfate(SDS) to bentonite.The adsorption of methyl orange on the anion-cation organobentonite was studied.The results indicate that both the speed and adsorbability of methyl orange by anion-cation organobentonite were much more faster and higher.The adsorption dynamics followed the laws of Langmuir.The relationship between adsorbing capacity(qe) and equilibrium mass concentration(ce) was in accordance with isothermal adsorption equations of Freundlich and Langmuir.The efficiencies of anion-cation organobentonite for adsorption of methyl orange were higher than that of powdered activated carbon.