改性沸石吸附废水中苯胺的实验研究  

Experimental Study of Sorption of Aniline in Solutions with Modified Zeolite

作　　者：曹艳芳[1] 卢晓岩[1] 梁莹[1] 

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730070

出　　处：《兰州交通大学学报》2005年第1期74-76,共3页Journal of Lanzhou Jiaotong University

摘　　要：研究了以溴化十六烷基三甲胺(HDTMAB)为改性剂制备的改性沸石对水中苯胺吸附性能和影响因素.结果表明,改性沸石对苯胺的吸附效果显著,吸附时间为120 min 时吸附率约为85%;实验条件下改性沸石的最佳用量为50 g/L;并且改性沸石对苯胺的吸附率随温度的升高有所增大,而随 pH值的增大明显减小;改性沸石对水中苯胺的吸附规律较好的符合Freundlich吸附等温式.Hexadecyltrimethylammonuium bromide surfactants were used to modify zeolite in this study. The properties and some influential factors of modified zeolite for adsorption of aniline in the solutions were experimentally investigated,such as dosage of modified zeolite,adsorption durations,temperatures and pH values. The results showed that removal efficiency of aniline was about 85% when adsorption duration lasted 120 min. The optimal dosage to modify zeolite was 50 g/L under the experimental conditions. The removal efficiency of aniline increased with increasing temperatures while decreased with increasing pH values. According to the adsorption isotherm curves of aniline on modified zeolite,the regularity of adsorption fit Freundlich isothermal adsorption model.

关 键 词：沸石 改性 吸附 溴化十六烷基三甲胺 苯胺 

分 类 号：X505[环境科学与工程—环境工程]