CPC改性膨润土的制备及其对2,4-二氯苯酚的吸附性能

Preparation of CPC Modified Bentonite and Its adsorption for 2,4-Dichlorophenol

采用阳离子表面活性剂氯代十六烷基吡啶(CPC)对天然膨润土进行改性。通过IR光谱和X射线衍射分析手段对制备的CPC改性膨润土进行了结构表征。同时以CPC改性膨润土为吸附剂,研究了对含2,4-二氯苯酚废水的去除效果,并确定了最佳的吸附时间,温度、吸附剂用量和溶液pH。研究表明CPC改性膨润土吸附水中2,4-二氯苯酚时,同时具有表面吸附和分配作用,对酚类污染物的去除作用明显。

Crude bentonite was modified using cationic surfactant CPC （cetyl pyridinium chloride）. The CPC modified bentonite was characterized by IR and XRD and used as adsorbent to study its removal of 2,4-Dichlorophenol from waste water. The optimum conditions such as adsorption time, temperature, amount of adsorbent and pH value were also determined. The study shows that CPC modified bentonite has both surface adsorption and distribution effect of 2,4-dichlo- rophenol , leading to an evident removal of phenol pollutants.