壳聚糖改性膨润土吸附对苯二酚废水的效果研究

Research on the Treatment of Hydroquinone Wastewater by Chitosan Modified Bentonite

本实验用壳聚糖作为改性剂,与膨润土靠静电引力形成复合吸附剂,并用此复合吸附剂吸附废水中的对苯二酚,得出了吸附对苯二酚废水的最佳条件:壳聚糖的负载量为0.045g/g.投加量为2.0g,振荡时间120min,温度30℃,pH值为9.0,振荡速率90r/min。对吸附机理进行了讨论,壳聚糖改性膨润土吸附对苯二酚的行为符合Freundlich吸附模式。

The composite adsorbent is perpared by the chitosan as modifier and bentonite,which is formed by static electricity.The hydroquinone wastewater is adsorbed by the composite absorbent,it shows that the best adsorption conditions of hydroquinone are as follows： the chitosan is 0.045 g/g,dosing quantity is 2.0 g,oscillating time is 120 min,the temperature is 30 ℃,pH value is 9.0,oscillating rate is 90 r/min.The adsorption of hydroquinone wastewater conforms with Freundlich equation.