蒙脱石有机改性对邻苯二甲酸二丁酯吸附的影响

Comparative trial on the adsorption capacity for dibutyl phthalate before and after montmorillonite organic modification

以钠蒙脱石和十六烷基三甲基溴化铵(CTAB)有机改性蒙脱石为吸附剂对水溶液中的邻苯二甲酸二丁酯(DBP)进行了静态吸附对比。考察吸附时间、溶液初始p H等因素对吸附效果的影响,研究了DBP在蒙脱石有机改性前后的两种吸附剂上的吸附机制。结果表明,有机改性后的蒙脱石吸附效果更好,吸附的主要机制是表面吸附,有机改性蒙脱石还存在分配吸附作用。

Comparative trials on static adsorption of dibutyl phthalate （DBP） in aqueous solution have been imple- mented with the adsorbent organically modified with sodium montmorillonite （Na-M） and cetyl trimethyl ammonium bromide （CTAB）. The effects of factors, such as adsorbing time,initial pH of the solution,etc.,on its adsorbing effectiveness are studied. The adsorption mechanisms of DBP for the two kinds of adsorbents before and after the organic modification of montmorillonite are researched. The results show that the montmorillonite adsorption effect after organic modification is the best, and the main adsorption mechanism is surface adsorption. Organic modified montmorillonite has distribution adsorption effect.