阴-阳离子有机膨润土吸附水中苯胺、苯酚的性能

Sorption of Aniline and Phenol to Anioncation Organobentonites from Water

首次用阴、阳离子表面活性剂改性膨润土 ,制得一系列阴 -阳离子有机膨润土 ,表征了有机膨润土的结构特征 ;研究了阴 -阳离子有机膨润土吸附水中苯酚、苯胺等有机物的性能及影响因素 ,并初步探讨了其吸附机理 .结果表明 ,阴 -阳离子有机膨润土的层间距和有机碳含量与改性时阴、阳离子表面活性剂的组成和配比有关 ;阴 -阳离子表面活性剂在有机膨润土中形成了增溶 (分配 )作用较强的有机相 ,从而对水中的有机污染物产生协同去除效应 .

A series of anioncation organobentonites were synthesized by covering anioncation mixed surfactants on the bentonite.The intelayer spacings and organic carbon contents of anioncation organobentonites were analyzed.The sorption properties,mechanisms and optimal conditions of organic compounds to anioncation organobentonite were discussed.The results indicate that the organic carbon contents of anioncation organobentonites are proportional to the amounts of anion and cation surfactants covering onto bentonite.Partition medium are excellently created in anioncation organobentonites for organic pollutants in water.The sorption properties of anioncation organobentonites are fine when the alkychain of anion surfactant is same as of cation surfactants exchanging on bentonite.Removal rates of organic pollutants from water are improved by synergistic solubilization of anion and cation surfactant on the organobentonites.