粉煤灰对焦化废水中挥发酚的吸附机理研究

doi:10.11894/1005-829x.2015.35(7).068

工业水处理 ›› 2015, Vol. 35 ›› Issue (7): 68-72. doi: 10.11894/1005-829x.2015.35(7).068

粉煤灰对焦化废水中挥发酚的吸附机理研究

赵伟高¹, 谷启源², 赵鹏¹, 张宏伟^1,3

1. 天津大学环境科学与工程学院, 天津 300072;
2. 北京科技大学土木与环境工程学院, 北京 100083;
3. 天津工业大学环境与化学工程学院, 天津 300387

收稿日期:2015-04-28 出版日期:2015-07-20 发布日期:2015-07-17
作者简介:赵伟高(1990—),硕士。电话:022-27400830,E-mail:zhaoweigao@tju.edu.cn。

Research on the adsorption mechanism of volatile phenols in the coking wastewater on fly ash

Zhao Weigao¹, Gu Qiyuan², Zhao Peng¹, Zhang Hongwei^1,3

1. School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China;
2. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;
3. School of Environmental and Chemical Engineering, Tianjin University of Technology, Tianjin 300387, China

Received:2015-04-28 Online:2015-07-20 Published:2015-07-17

摘要/Abstract

摘要：

选用廉价的粉煤灰对焦化废水中的挥发酚吸附去除。考察了粉煤灰不同用量、吸附时间、初始pH、不同盐度和不同温度等条件对吸附的影响, 讨论了粉煤灰对焦化废水中挥发酚的吸附特性和吸附机理。结果表明, 焦化废水复杂体系中挥发酚在粉煤灰上的吸附规律更符合准二级动力学吸附模型和Langmuir等温模式。粉煤灰对挥发酚的最大平衡吸附量为39.5 mg/g, 可以作为焦化废水的预处理手段, 实现"以废治废"。

关键词: 粉煤灰, 吸附, 焦化废水, 挥发酚

Abstract:

Low-cost fly ash has been used for the adsorptive removal of volatile phenols from coking wastewater. The effects of different fly ash dosages, adsorption time, initial pH, different salinities, different adsorption temperatures, etc. on adsorption are investigated. The adsorption mechanism and characteristics of volatile phenols in the complicated systems of coking wastewater treated by fly ash are investigated. The results indicate that the adsorption law of volatile phenols of the complicated systems of coking wastewater on fly ash fits the pseudo second order kinetics adsorption model and the Langmuir equilibrium isotherm model well. The maximum adsorption capacity of fly ash for volatile phenols is 39.5 mg/g. Therefore, fly ash could be used as a pretreatment measure for coking wastewater, realizing the idea "treating waste with waste".

Key words: fly ash, adsorption, coking wastewater, volatile phenols

中图分类号:

X703.1

赵伟高, 谷启源, 赵鹏, 张宏伟. 粉煤灰对焦化废水中挥发酚的吸附机理研究[J]. 工业水处理, 2015, 35(7): 68-72.

Zhao Weigao, Gu Qiyuan, Zhao Peng, Zhang Hongwei. Research on the adsorption mechanism of volatile phenols in the coking wastewater on fly ash[J]. INDUSTRIAL WATER TREATMENT, 2015, 35(7): 68-72.

https://www.iwt.cn/CN/Y2015/V35/I7/68

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