期刊论文

中文

环境工程学报

1673-9108

2012

6

12

4345-4349

国家自然科学基金资助项目（51078128）； 湖南省创新平台开放基金项目（09k099）； 湖南省重点建设学科资助；

本校为第一机构

采用聚乙二醇活化原材料百合杆,分别在300℃和600℃对活化后百合杆进行炭化,制得炭化百合杆,用于吸附废水中的苯酚。实验考察了pH值、吸附时间和吸附质初始浓度对苯酚吸附的影响,采用Langmuir、Freundlich和Dubinin-Radushkevich等温式分别对该吸附过程进行描述,并结合实验数据对比了准一级和准二级动力学模型。结果表明:炭化百合杆对苯酚的吸附过程符合Langmuir等温式和准二级动力学模型,计算了热力学参数(△G、△H和△S),说明该吸附过程为自发进行。碳化百合杆对苯酚具有良好吸附性能。

Activated carbon prepared from lily tree using polyethylene glycol as an activator at 300℃ and 600℃ was utilized as adsorbent to remove phenol from aqueous solution. Batch experiments were conducted to study the effects of pH (3 - 10) , adsorption time (20 - 150 min) , and initial concentration of adsorbate ( 10 50 mg/L) on phenol adsorption. The equilibrium experimental data were analyzed by the Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherm models. The kinetics of phenol on carbonization lily stem (CLS) were analyzed using pse...