阴-阳离子有机膨润土对甲基橙的吸附性能

Adsorption of Methyl Orange onto Anion-Cation Organobentonite

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好于活性炭,可代替活性炭用于染料废水吸附脱色处理。

The anion-cation organobentonite were prepared by incorporating both cationic surfactant bromide cetyhrimethylammonium （CTMAB） and anionic surfactant sodium dodecyl sulfate （SDS） to bentonite, The adsorption of Methyl Orange on the anion-cation organobentonite was studied. The results indicated 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 activated carbon.