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炭化百合杆对废水中苯酚的吸附

Keywords: 炭化百合杆,吸附,苯酚,吸附等温模型,动力学,热力学

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Abstract:

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。

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