%0 Journal Article
%T Adsorption of Humic Acid onto Aminated HMS<br>胺基官能基化的HMS吸附水体中的腐殖酸
%A TAO Qi
%A XU Zhao-yi
%A ZHENG Shou-rong
%A WANG Zhi-liang
%A ZHANG Li-min
%A XIA Ming-fang
%A <br>陶琪
%A 许昭怡
%A 郑寿荣
%A 王志良
%A 张利民
%A 夏明芳
%J 环境科学
%D 2008
%I 
%X The adsorption of humic acid onto hexagonal mesoporous silica(HMS) and surface aminated HMS was investigated. The simulation results using Freundlich model indicated that the surface amination of HMS led to an increase of adsorption constant from 0.56 to 105, reflecting markedly enhanced adsorption of humic acid upon surface amination. In addition, humic acid adsorption under acidic conditions was favored. Adsorbed humic acid molecules were found to be located in the mesopores of aminated HMS and the mesopores with relatively larger pore diameters were preferentially occupied. The kinetics of humic acid adsorption onto the aminated HMS could be well described by second order kinetics and the adsorption rate was mainly dominated by intrapore diffusion process.
%K amino functionalization
%K hexagonal mesoporous silica(HMS)
%K humic acid
%K adsorption<br>胺基官能化
%K HMS
%K 腐殖酸
%K 吸附
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=10AC85F2BC74E17AA2A411B7EAD9BD7A&yid=67289AFF6305E306&vid=771469D9D58C34FF&iid=94C357A881DFC066&sid=839CF8520FE9DA44&eid=C80CAAD049B5B990&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=24