Adsorption of hexavalent chromium by metal organic frameworks from aqueous solution

Title
Adsorption of hexavalent chromium by metal organic frameworks from aqueous solution
Author(s)
주상우Afshin Maleki[Afshin Maleki]Bagher Hayati[Bagher Hayati]Maryam Naghizadeh[Maryam Naghizadeh]
Keywords
ACTIVATED CARBON; BINARY-SYSTEMS; DYE ADSORPTION; ACID DYE; REMOVAL; KINETICS; WATER; THERMODYNAMICS; EQUILIBRIUM; COPOLYMER
Issue Date
201508
Publisher
ELSEVIER SCIENCE INC
Citation
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.28, pp.211 - 216
Abstract
A metal-organic frameworks (MOFs) based on copper-benzenetricarboxylates is applied to the adsorption of hexavalent chromium from aqueous solution. Characterization of Cu-BTC was achieved by XRD, SEM micrographs, nitrogen adsorption-desorption analysis and FT-IR spectra. The kinetic characteristics and thermodynamic parameters are also analyzed. The experimental isotherm data are analyzed using Langmuir and Freundlich isotherm equations. Thermodynamic parameters are calculated by the Gibbs free energy function, confirming that the adsorption process was spontaneous and accompanied by exothermic. The maximum removal has been achieved at pH = 7.0. Possible mechanism and adsorption behavior of hexavalent chromium onto Cu-BTC are investigated. (C) 2015 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/31318http://dx.doi.org/10.1016/j.jiec.2015.02.016
ISSN
1226-086X
Appears in Collections:
공과대학 > 기계공학부 > Articles
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