改性海泡石对有机污染物氯苯的吸附研究

Study on Adsorption of Modified Sepiolite to Organic Contaminant Chlorobenzene

研究了经过酸热改性的海泡石对氯苯的吸附特性,在pH值为6～7,吸附1h条件下,氯苯去除率可达80%左右。同时探讨了改性海泡石对氯苯的吸附等温线,经过对吸附等温方程的拟合可知,符合Freundlich吸附等温方程式,其改性海泡石吸附氯苯为表面不均匀吸附。其吸附动力学符合二级反应动力学模型。

The characteristic of absorption of the modified sepiolite to chlorobenzene after acid and heat modification was studied in this article. The removal ratio of chlorobenzene was about 80% while the pH value was 6~7 and the absorption time was 1 hour. Meanwhile, the isotherm of the absorption of absorption of modified sepiolite to chlorobenzene was discussed. By fitting in with the isotherm equation of the adsorption, the equation fitted in the freundlich isotherm. The adsorption of the modified sepiolite to chlorobenzene was uneven and on the surface of the modified sepiolite. The adsorption dynamics was in accord with the law of the second-order equation.