%0 Journal Article
%T Removal of heavy metals from aqueous solution by carbon nanotubes:adsorption equilibrium and kinetics
%A LI Yan-hui
%A DI Ze-chao
%A LUAN Zhao-kun
%A DING Jun
%A ZUO Hua
%A WU Xiao-qing
%A XU Cai-Lu
%A WU De-hai
%A <br>LI Yan-hui
%A DI Ze-chao
%A LUAN Zhao-kun
%A DING Jun
%A ZUO Hu
%A WU Xiao-qing
%A XU Cai-Lu
%A WU De-hai
%J 环境科学学报(英文版)
%D 2004
%I 
%X Carbon nanotubes prepared by catalytic chemical vapor deposition of hydrocarbon at 650 degrees C show good adsorption capability of Pb2+, Cu2+ and Cd2+ ions from aqueous solution after oxidized with concentrated nitric acid at 140 degrees C for 1 h. The specific surface area and particle size distribution of the as-grown and oxidized CNTs were studied by BET method and laser particle analyzer. Three kinetic models, that is, first-, pseudo second- and second-order, were used to investigate the adsorption data and the pseudo second-order model can represent the experimental data better than two others. The equilibriumdata fitted well with the Langmuir model and showed the following adsorption order: Pb2+ > Cu2+ > Cd2+.
%K carbon nanotubes
%K heavy metals
%K adsorption<br>吸附平衡
%K 重金属
%K 动力学
%K 水溶液
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=84350280B990C5D869F9E2F4620B872C&yid=D0E58B75BFD8E51C&vid=7801E6FC5AE9020C&iid=0B39A22176CE99FB&sid=3D9746C06EC12B45&eid=CC0ECB9C52F1B85F&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=1&reference_num=20