CTMAB改性蛭石对水体中对硝基苯酚的吸附研究  

Adsorption of P-nitrophenol in Water by CTMAB-vermiculite

作　　者：唐见 单程楠 王小治 封克 

机构地区：[1]扬州大学 [2]江苏省扬州农业环境安全技术服务中心,江苏扬州225009

出　　处：《工业安全与环保》2011年第12期7-8,34,共3页Industrial Safety and Environmental Protection

基　　金：江苏省环境材料与环境工程重点实验室基金项目

摘　　要：为提高蛭石的层间距和对有机物的吸附能力,采用阳离子表面活性剂溴化十六烷基三甲铵(CTMAB)对蛭石进行改性,并研究了其对水中对硝基苯酚的去除效果。结果显示,改性蛭石对溶液中的对硝基苯酚吸附能力明显强于原蛭石;改性蛭石对溶液中的对硝基苯酚的吸附过程在30 min左右就基本达到平衡;碱性条件有利于改性蛭石吸附去除对硝基苯酚。利用扫描电镜对溴化十六烷基三甲铵(CTMAB)改性后的蛭石结构特征变化进行的分析表明,蛭石经改性后,其层间距变大,大大增加了层间对对硝基苯酚的吸附空间,从而大幅度提高蛭石对对硝基苯酚的吸附能力。In order to improve the interlayer space of vermiculite and its adsorption capacity of organic matter GTMAB - vermiculite, cetyltrimethylammonium bromide is applied to modify vermiculite, and its removal effect on P- nitrophenal in water is also studied. The resuits show that P - nitraphenol removal rate of modified venmiculite is better than that of the original vermiculite and the adsorption process can reach the balance after 30 rains; alkaline conditions are conducive to CTMAB - vermiculite adsorption of P - nitrophenol. Structural characteristic of vemiculite and CTMAB- vermiculite has been studied through SE and the analysis indicates： interlayer space of medified vermionlite becomes larger, a larger increases in adsorption of P - nitraphenol between interlayer space, thereby dramatically the modified vermiculite adsorption capacity of P - nitrophenol can be improved.

关 键 词：蛭石 溴化十六烷基三甲铵 对硝基苯酚 

分 类 号：X783[环境科学与工程—环境工程]