粉末活性炭对苯酚废水的吸附研究

Study on Adsorption of Phenol Wastewater by Powdered Activated Carbon

文章研究了粉末活性炭处理苯酚废水的方法。系统考虑了粉末活性炭用量、pH、反应时间和温度等重要因素。实验结果表明:在室温下,活性炭用量为0.1 g,废水pH为6.0,反应时间为30 min,苯酚去除率可达98.4%。从动力学和热力学角度分析吸附原理,其动力学更好地符合Lagergren伪二级反应动力学模型,热力学较好的符合Langmuir等温线。

In the paper,the treatment of phenol wastewater by adsorption onto powdered activated carbon was studied.The important factors such as dosage of powdered activated carbon,pH value,time and temperature have been systematically examined.The results of experimental study showed that the removal ratio of phenol could be reach 98.4 % under the conditions： the dosage of powdered activated carbon was 0.1 g,pH value of the wastewater was 6.0,the reaction time was 30 min and the reaction temperature was 25 ℃.Study on the adsorption fundamentals of powdered activated carbon from the aspects of kinetics and thermodynamics,the adsorption kinetics showed better agreement with the Lagergren second order kinetics,and the adsorption thermodynamics could be described well with the Langmuir isotherm.