文献类型：期刊文献

英文题名：Adsorption of EDTA on activated carbon from aqueous solutions

作者：Zhu, Hai-song[1];Yang, Xiao-juan[1];Mao, Yan-peng[1];Chen, Yu[1];Long, Xiang-li[1];Yuan, Wei-kang[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2011

卷号：185

期号：2-3

起止页码：951

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20105013484836);WOS:【SCI-EXPANDED(收录号:WOS:000286782600052)】；

基金：The present work is supported by the Ministry of Science and Technology of China (No. 2006AA05Z307) and the State Key Laboratory of Chemical Engineering (SKL-ChE-08C05).

语种：英文

外文关键词：Adsorption kinetics; Adsorption; EDTA; Activated carbon

摘要：In this study, the adsorption of EDTA on activated carbon from aqueous solutions has been investigated in a batch stirred cell. Experiments have been carried out to investigate the effects of temperature, EDTA concentration, pH, activated carbon mass and particle size on EDTA adsorption. The experimental results manifest that the EDTA adsorption rate increases with its concentration in the aqueous solutions. EDTA adsorption also increases with temperature. The EDTA removal from the solution increases as activated carbon mass increases. The Langmuir and Freundlich equilibrium isotherm models are found to provide a good fitting of the adsorption data, with R-2 = 0.9920 and 0.9982, respectively. The kinetic study shows that EDTA adsorption on the activated carbon is in good compliance with the pseudo-second-order kinetic model. The thermodynamic parameters (E-a, Delta G(0), Delta H-0, Delta S-0) obtained indicate the endothermic nature of EDTA adsorption on activated carbon. (C) 2010 Elsevier B.V. All rights reserved.