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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2689
Title: Adsorption of aniline, phenol, 4-chlorophenol and 4-nitrophenol onto granular activated carbon: Isotherm, thermodynamics and relationship with solvatochromic parameters
Authors: Suresh S.
Srivastava, Vimal Chandra
Mishra I.M.
Published in: Biointerface Research in Applied Chemistry
Abstract: In the present paper, equilibrium adsorption isotherm data generated in the temperature range of 288-318 K are reported for the adsorption of Aniline (AN), Phenol (P), 4-chlorophenol (CP) and 4-nitrophenol (NP) from aqueous solution onto granular activated carbon (GAC). Adsorption of these adsorbates onto GAC was found to be favourably influenced by an increase in temperature. Redlich– Peterson model represented the equilibrium data very well for AN and NP. However, Tempkin model was the best for P and CP. The high negative value of change in Gibb’s free energy (?G0) indicated the feasible and spontaneous adsorption of AN, P, CP and NP adsorption onto GAC. Adsorption process was found to be endothermic for all the adsorbates. The dispersion force between the ?-electrons of GAC and the ?-electrons in AN, P, CP and NP molecules is the main adsorption mechanism. The adsorption behavior of AN, P, CP and NP strongly depends upon the intrinsic molar volume (VI), thus, steric effect has strong influence on observed adsorption coefficients values. This study also shows that hydrogen bonding between the adsorbates and the GAC plays an important role in the adsorption behavior. © 2017 by the authors.
Citation: Biointerface Research in Applied Chemistry (2017), 7(6): 2263-2276
URI: http://repository.iitr.ac.in/handle/123456789/2689
Issue Date: 2017
Publisher: AMG Transcend Association
Keywords: 4-chlorophenol
4-nitrophenol
Adsorption
Aniline
Granular Activated Carbon
Isotherms
Phenol
Thermodynamics
ISSN: 20695837
Author Scopus IDs: 22935957500
35565811700
23668474600
Author Affiliations: Suresh, S., Advanced Industrial Pollution Abatement Research Laboratory, Department of Chemical Engineering, Maulana Azad National Institute of Technology, Bhopal, MP 462003, India
Srivastava, V.C., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Mishra, I.M., Department of Chemical Engineering, Indian school of Mines, Dhanbad, Jharkhand 826004, India
Corresponding Author: Suresh, S.; Advanced Industrial Pollution Abatement Research Laboratory, Department of Chemical Engineering, Maulana Azad National Institute of TechnologyIndia; email: sureshpecchem@gmail.com
Appears in Collections:Journal Publications [CH]

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