活性炭纤维对挥发性有机物的吸附及其等温线的拟合  

EXPERIMENTAL AND MODELED RESULTS DESCRIBING THE ADSORPTION OF TRACE VOCS ON ACTIVATED CARBON FIBERS

作　　者：黄正宏[1] 康飞宇[1] 杨骏兵[1] 梁开明[1] 黄爱萍[2] 

机构地区：[1]清华大学材料科学与工程系,北京100084 [2]中山大学材料科学研究所,广州510275

出　　处：《离子交换与吸附》2001年第6期487-493,共7页Ion Exchange and Adsorption

摘　　要：空气中挥发性有机化合物(VOC)严重危害人的身体健康,因而研究VOC的去除具有重要意义。本文研究了不同比表面积粘胶基活性炭纤维(ACF)对低浓度VOC,丁酮和苯的吸附,并用Freundlich方程和DR方程对吸附等温线进行了拟合。结果表明:当丁酮的浓度高于100ppm时,比表面积高的ACF吸附容量高;当浓度低于100ppm时,情形正好相反。在实验浓度范围,较高比表面积的活性炭纤维对苯的吸附表现出了较高的吸附容量。Freundlich方程和DR方程能很好地拟合吸附等温线。The present work studied the adsorption of volatile organic compounds (VOC) such as non-polar benzene and polar methy-ethyl-ketone (MEK) onto viscose rayon based activated carbon fiber (ACF). The experimental results show that the ACF with higher specific area have higher adsorption capacity when the concentration was higher than 100 ppm in the case of polar MEK. However, it was the inverse case when the concentration was below 100 ppm. Higher specific area resulted in higher adsorption capacity for non-polar benzene in all the experimental range. Freundlich equation and DR equation were used to fit the measured adsorption data.

关 键 词：活性炭纤维 苯 丁酮 吸附 挥发性有机物 空气污染 吸附等温线 拟合 污染治理 

分 类 号：O647.3[理学—物理化学] X51[理学—化学]