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| KOH活化微孔活性炭对对硝基苯胺的吸附动力学 | |
| 引用本文： | 李坤权,郑正,罗兴章,蒋剑春.KOH活化微孔活性炭对对硝基苯胺的吸附动力学[J].中国环境科学,2010,30(2):174-179. |
| 作者姓名： | 李坤权 郑正 罗兴章 蒋剑春 |
| 作者单位： | 1. 复旦大学环境科学与工程系,上海,200433;南京农业大学工学院,江苏,南京,210031 2. 复旦大学环境科学与工程系,上海,200433 3. 中国林业科学研究院林产化学研究所,江苏,南京,210042 |
| 基金项目： | "十一五"国家水专项资助项目 |
| 摘 要： | 以互花米草为原料,经过碳化、KOH活化两步法制备了低成本、高比表面的微孔活性炭SAAC.通过静态实验研究了活性炭SAAC对水溶液中对硝基苯胺的吸附特性,并从动力学角度探讨了吸附机理.结果表明,微孔活性炭SAAC对对硝基苯胺吸附动力学数据符合准二级方程,吸附速率在前25min由内扩散控制,而后由膜扩散与内扩散共同控制.Freundlich方程能更好地描述对硝基苯胺在活性炭SAAC上的等温吸附行为;在15℃时,活性炭SAAC对对硝基苯胺的Langmuir最大吸附量为719mg/g. |
| 关 键 词： | KOH活化 对硝基苯胺 微孔活性炭 吸附机理 |
| 收稿时间： | 2009-07-22; |
Adsorption kinetics of p-nitroaniline onto microporous carbon activation with KOH |
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| LI Kun-quan,ZHENG Zheng,LUO Xing-zhang,JIANG Jian-chun.Adsorption kinetics of p-nitroaniline onto microporous carbon activation with KOH[J].China Environmental Science,2010,30(2):174-179. | |
| Authors: | LI Kun-quan ZHENG Zheng LUO Xing-zhang JIANG Jian-chun |
| Institution: | LI Kun-quan1,2,ZHENG Zheng1,LUO Xing-zhang1,JIANG Jian-chun3,(1.Environmental Science , Engineering Department,Fudan University,Shanghai 210093,China,2.College of Engineering,Nanjing Agricultural University,Nanjing 210031,3.Institute of Chemical Industry of Forest Product,Chinese Academy of Forestry,China) |
| Abstract: | Low-cost activated carbon was prepared from Spartina alterniflora from a two-step thermo-chemical process by KOH activation.The adsorption equilibrium and kinetic behavior of p-nitroaniline onto the carbon was investigated by conducting a series of batch adsorption experiments,and adsorption mechanism was discussed from kinetic point of view.The pseudo-second-order model was found to explain the adsorption kinetics most effectively.It was also found that the pore diffusion played an important role in the ad... |
| Keywords: | KOH activation p-nitroaniline microporous carbon adsorption mechanism |
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