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Position: Home > Articles > Sorption of Aqueous 3,4-dichloroaniline by Activated Carbon Fiber Journal of Agro-Environment Science 2009,28 (02) 371-374

活性炭纤维对水中3,4-二氯苯胺的吸附行为

作  者:
王卫平;郑正;马艳;李坤权;张继彪
单  位:
南京大学环境学院;污染控制与资源化研究国家重点实验室
关键词:
活性炭纤维;3,4-二氯苯胺;吸附;动力学;热力学
摘  要:
通过静态吸附实验和动态吸附实验,研究了pH值、电解质(NaCl)、活性炭纤维用量等因素对用棉花秸秆制备的活性炭纤维吸附水中3,4-二氯苯胺的影响,同时从动力学和热力学角度考察了活性炭纤维对3,4-二氯苯胺的吸附行为。结果表明,棉花秸秆制备的活性炭纤维可以有效地吸附3,4-二氯苯胺,电解质(NaCl)的存在对吸附有抑制作用;准二级动力学模型能够很好地描述3,4-二氯苯胺在活性炭纤维上的吸附行为;吸附等温线符合Langmuir方程,吸附行为是一个自发放热的物理吸附过程。
译  名:
Sorption of Aqueous 3,4-dichloroaniline by Activated Carbon Fiber
作  者:
WANG Wei-ping,ZHENG Zheng,MA Yan,LI Kun-quan,ZHANG Ji-biao(State Key Laboratory of Pollution Control and Resource Reuse,School of the Environment,Nanjing University,Nanjing 210093,China)
关键词:
activated carbon fiber;3,4-dichloroaniline;adsorption;kinetics;thermodynamics
摘  要:
The effect of activated carbon fiber prepared from cotton straw(CS-ACF)on the sorption behavior of aqueous 3,4-dichloroaniline was studied.The kinetics,thermodynamics,and the main factors affecting adsorption,such as pH,NaCl and activated carbon fiber dose were also investigated.The results indicated that the activated carbon fiber could effectively adsorb 3,4-dichloroaniline,and that NaCl inhibited the adsorption.The adsorption of 3,4-dichloroaniline by activated carbon fiber followed the pseudo second-order kinetic mode1.The equi-librium data fitted the Langmuir equation well,which showed that the process conformed to the mechanism of the Langmuir mode1.ΔG and ΔH were both negative,so the adsorption was spontaneous and exothermic.

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