有机膨润土吸附苯酚的性能及其在水处理中的应用初探

ORGANOBENTONITES AS ADSORBENTS FOR PHENOL AND THEIR APPLICATION IN WATER TREATMENT

分别用氯化十六烷基吡啶（ＣＰＣ）和溴化十六烷基三甲铵（ＣＴＭＡＢ）改性膨润土，试验了制备有机膨润土的适宜条件及其对吸附苯酚性能的影响。上述两种有机膨润土吸附水中苯酚很快能达到平衡。ｐＨ值为３─９时，有机膨润土处理苯酚的效果基本一致；ｐＨ＞１１时，有较高的去除率。ＣＰＣ－膨润土或ＣＴＭＡＢ－膨润土对苯酚的饱和吸附容量分别为１０３．５ｍｇ／ｇ和７５．０ｍｇ／ｇ。有机膨润土处理苯酚的效果比原土提高８倍以上。

Two kinds of organobentonites were synthesized by placing quaternary ammonium surfactants such as cetyltrimethylammonium bromide(CTMAB)and cetylpyridinium chloride(CPC) on bentonite. They were then examined for their ability to adsorb phenol.The equilibrium for their adsorption of phenol is quickly reached:and their efficiency is almost same at pH 39.There is a higher effeciency for treating phenol at pH 11-12.The saturation adsorbing capacities of CPC-bentonite or CTMAB-bentonite are 103.5 mg/g and 75.0 mg/g respectively. The effeciencies for two organobentonites to remove phenol in wastewater are over 8 times for the original tentonite.