• 关键词：膨润土  萘胺  萘酚  吸附  水处理

• 基金项目：浙江省自然科学基金

• 朱利中
• 杭州大学环境科学系,杭州 310028

• 李益民
• 杭州大学环境科学系,杭州 310028

• 张建英
• 杭州大学环境科学系,杭州 310028

• 王珏
• 杭州大学环境科学系,杭州 310028

• 摘要：分别用溴化十八烷基三甲铵(OTMAB)、溴化十六烷基三甲铵(CTMAB)和溴化十二烷基三甲铵(DTMAB)改性膨润土,研究了有机膨润土吸附水中α 萘胺、β 萘胺和α 萘酚的性能及适宜条件。结果表明,有机膨润土的层间距、对萘胺、萘酚的饱和吸附容量及去除率与改性时所用表面活性剂的碳链长度及表面活性剂在膨润土上的实际交换用量成正相关；有机膨润土对水中萘胺、萘酚的去除率可达95%左右,其饱和吸附容量也远高于原土。用有机膨润土处理含萘胺、萘酚的废水,效果良好。

• Abstract：Three organobentonites were synthesized by placing cation surfactants such as octadecyltrimethylammonium bromide (OTMAB),cetyltrimethylammonium bromide (CTMAB) and dodecyltrimethylammonium bromide (DTMAB) on bentonite.The optimal conditions and properties for organobentonites to adsorb α naphthylamine,β naphthylamine,α naphthol in water were investigated.It was indicated that the interlayer spacing of organobentonites,the removal rates and the saturation adsorbing capacities for organobetonites to treat naphthylamine,naphthol were relative to the length of alkyl chain and the amounts of cation surfactants exchanged on the bentonite.The saturation adsorbing capacities and the removal rates for organobentonites to treat naphthylamine,naphthol in water were more than that for the original bentonite.The removal rates of naphthylamine and naphthol from wastewater by organobentonites were more than 93%.The authors also studied the possibility of recycling organobentonites for wastewater treatment.

• Key words：Organobentonites  cation surfactants  naphthylamine  naphthol  adsorption  wastewater treatment.

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