用阳、非离子表面活性剂修饰膨润土，制得有机膨润土，研究了阳-非离子有机膨润土对水中苯酚的吸附性能及修饰剂用量、温度和pH值对其的影响，并探讨了吸附机理。结果表明，有机土样对苯酚的吸附等温曲线是线性曲线，吸附主要为分配作用，吸附作用的大小由有机膨润土中有机碳的含量决定，膨润土有机碳对有机物的溶解起了增溶作用，有机碳含量高的膨润土对水中苯酚的吸附能力增强；对苯酚的吸附量随温度、pH的升高而降低。%A series of cation-nonion organobentonites were synthesized by covering cation-nonion mixed surfactants on the bentonite .The absorption properties and amount ,temperature ,pH of modifier were stud-ied,and the sorption mechanisms were discussed .The results indicated that:the absorption isotherms of phenol on organobentonites were linear , which was mainly due to distribution effects .The magnitude of distribution effects was decided by the organic carbon contents in organobentonites ,partition mediums are excellently created by organic carbon ,thus absorption ability of organobentonites to phenol from water was markedly increased;the sorption of phenol reduced with solution pH and temperature .
展开▼
