| 活性炭纤维对水中酚类化合物的吸附特性 |
| 摘要点击 1341 全文点击 1381 投稿时间：2007-10-15 修订日期：2008-01-10 |
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| 中文关键词 活性炭纤维 含酚废水 D-R方程 微孔填充 吸附热力学 |
| 英文关键词 activated carbon fiber(ACF) phenol-containing wastewater Dubinin-Radushkevich equation the volume-filling theory of micropore adsorption kinetics |
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| 中文摘要 |
| 研究了活性炭纤维(actived carbon fiber, ACF)对模拟废水中苯酚、对氯苯酚、对硝基苯酚的吸附特性.采用扫描电子显微镜(SEM)对ACF的表面结构进行了表征.通过静态吸附试验，采用吸附热力学探讨了ACF对苯酚、对氯苯酚、对硝基苯酚模拟废水的机制，计算了有关的热力学函数.结果表明，ACF对它们的吸附速率很快，在酸性条件下吸附效果较好，相同条件下，去除率是苯酚(87%)<对氯苯酚(96%)<对硝基苯酚(99%).ACF对这3种物质的吸附都是自发的放热反应，属于物理吸附.吸附等温线能用Dubinin-Radushkevich方程较好地拟合. |
| 英文摘要 |
| The adsorption characteristics of phenol, p-chlorophenol and p-nitrophenol in wastewater by activated carbon fiber (ACF) were studied. The surface properties of ACF were characterized by scanning electron microscopy (SEM). The thermodynamic characteristics and mechanism of phenol, p-chlorophenol and p-nitrophenol adsorption on ACF were investigated by using the bottle-point technique. The results showed that the adsorption speed was fast, and ACF had good adsorption properties when pH<7. On the same condition, the order of removal efficiency were: phenol (87%)<p-chlorophenol (96%) <p-nitrophenol (99%). All the adsorptions are physical adsorption, and the adsorption process were spontaneous exothermic reaction. All the adsorption isotherms can be well represented by Dubinin-Radushkevich equation and the sorption process were spontaneous exothermic reaction. |
