摘要
本文讨论了以蒙脱土和海泡石为吸附剂,对水中有机污染物苯,甲苯和乙苯进行的吸附研究。结果证明,静态吸附的吸附时间均为10h左右,吸附容量为100μg/g(平衡浓度为1mg/L)。在对两种吸附剂进行X衍射和热分析试验后,发现有机物分子进入了粘土的层间,从而肯定了粘土对水中有机污染物吸附主要以层间吸附为主。结合这些实验数据,从粘土的化学结构着手,讨论了粘土的吸附机理,得出了需要对粘土进行表面改性的结论。此结论对改变粘土表面亲水性,应用粘土作为水质吸附剂有重要的理论意义。
Adsorption study of Low concentration benzene, toluene and ethylbenzene in water by montmorillonite and meerschaum was made. Adsorption time and adsorption capacity were examined in detail. The mode of adsorption of organic molecules by the clay was studied and proposed with techniques of XRD and thermal analysis. It is suggested that the chemical structure of clay surface should affect the adsorption capacity, So, further study has been conducted on some chemically treated clays, and the result will be reported in a successive paper.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
1993年第2期139-144,共6页
Journal of Tongji University:Natural Science
