学术
酚类化合物在矿化垃圾中的吸附机理研究
柴晓利[1] 郭强[1] 程海静[2] 赵由才[1]
[1]同济大学污染控制与资源化研究国家重点实验室,上海200092 [2]上海理工大学城市建设与环境工程学院,上海200093
摘 要:
研究了苯酚、2-氯酚、4-氯酚、2,4-二氯酚在矿化垃圾中的吸附性能,并从动力学和热力学角度探讨了有机酚在矿化垃圾中的吸附机理。等温吸附曲线研究表明,在试验的浓度范围内,有机酚在矿化垃圾中的吸附符合Freundlich等温吸附方程。有机酚在矿化垃圾中的吸附动力学符合二级反应动力学方程,反应受孔扩散和内部扩散共同控制。在试验的温度范围内,有机酚在矿化垃圾中的吸附是一个自发过程,温度对吸附反应的自发性有着显著的影响,自由能随着温度的升高而降低,自发性增强。[著者文摘]
文章出处:
《工业用水与废水》-2007年38卷5期,86 -51-54,86页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1009-2455（2007）05-0051-04
Adsorption mechanism of phenolic compound in aged-refuse
CHAI Xiao-li,GUO Qiang,CHENG Hai-jing,ZHAO You-cai（1.State Key Laboratory of Pollution Control and Resource Reuse,School of Environmental Science and Engineering,Tongji University,Shanghai 200092,China;2.College of Urban Construction and Environment Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China）
Abstract:
The adsorption capacities of phenol,2-chlorophenol,4-chlorophenol,2,4-dichlorophenol in aged-refuse were studied,and the adsorption mechnism of the organic phenol in aged-refuse was discussed from the point of view of kinetics and thermodynamics.The research on the isotherm adsorption curve showed that,at the experimental concentration range,the adsorption of organic phenol in aged-refuse fitted well to the Freundlich isotherm adsorption equation.Its adsorption kinetics fitted the dynamic equation of second-order reaction,the reaction was co-controlled by pore diffusion and internal diffusion.In the experimental temperature range the adsorption of organic phenol in aged-refuse was a spontaneous process,temperature had an obvious influence on adsorption reaction,with the increasing of temperature,the free energy decreased,and the spontaneity increased.[著者文摘]
Key words:
adsorption;phenol;aged-refuse;kinetics;thermodynamics
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