%0 Journal Article
%T Kinetics of Enhanced Adsorption by Polarization for Organic Pollutants on Activated Carbon Fiber<br>电增强活性炭纤维吸附有机污染物的动力学研究
%A HAN Yan-he
%A QUAN Xie
%A ZHAO Hui-min
%A CHEN Shuo
%A ZHAO Ya-zhi
%A <br>韩严和
%A 全燮
%A 赵慧敏
%A 陈硕
%A 赵雅芝
%J 环境科学
%D 2006
%I 
%X The adsorption kinetics for model pollutants on the activated carbon fiber(ACF) by polarization was investigated.Kinetics data obtained for the adsorption of these model pollutants at open-circuit and 400mV,-400mV polarization was applied to the Lagergren equation,and adsorption rate constants(Ka) were determined.With the anodic polarization of 400mV,the capacity of sodium phenoxide increases from(0.008 3mmol·g-1) at open-circuit to 0.18mmol·g-1,and a seventeen-fold enhancement is achievable;however,the capacity of pnitrophenol decreases from 2.93 mmol·g-1 at open-circuit to 2.65 mmol·g-1.With the cathodal polarization of-400mV,the capacity of aniline improves from 3.60 mmol·g-1 at open-circuit to 3.88 mmol·g-1;however,the capacity of sodium dodecylbenzene sulfonate reduces from 2.20 mmol·g-1 at open-circuit to 1.59 mmol·g-1. The enhancement for electrosorption changes with different groups substituting. Anodic polarization enhances the adsorption of benzene with electron-donating group.But whether anodic or not cathodal polarization has less effect on the adsorption of electron-accepting aromatic compounds,and decreases the adsorption of benzene bearing donor-conjugate bridge-acceptor but increases the adsorption rate.Electrostatic interaction plays a very important role in electrosorption of ion-pollutants.
%K activated carbon
%K adsorption kinetics
%K Lagergren
%K electrosorption enhanced
%K electron-donating and electron-accepting groups<br>活性炭纤维
%K 吸附动力学
%K Lagergren
%K 电增强吸附
%K 供、吸电子基团
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=D6AD5CCEC9580D3E&yid=37904DC365DD7266&vid=DB817633AA4F79B9&iid=B31275AF3241DB2D&sid=A6B1729CC57A879A&eid=76C32027E03E49D7&journal_id=0250-3301&journal_name=环境科学&referenced_num=1&reference_num=18