Document Detail


Adsorption of EDTA on activated carbon from aqueous solutions.
MedLine Citation:
PMID:  21041025     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
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), ΔG(0), ΔH(0), ΔS(0)) obtained indicate the endothermic nature of EDTA adsorption on activated carbon.
Authors:
Hai-Song Zhu; Xiao-Juan Yang; Yan-Peng Mao; Yu Chen; Xiang-Li Long; Wei-Kang Yuan
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Publication Detail:
Type:  Journal Article     Date:  2010-10-08
Journal Detail:
Title:  Journal of hazardous materials     Volume:  185     ISSN:  1873-3336     ISO Abbreviation:  J. Hazard. Mater.     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-12-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9422688     Medline TA:  J Hazard Mater     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  951-7     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier B.V. All rights reserved.
Affiliation:
State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People's Republic of China.
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