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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1954
Title: Isotherm and kinetics study for acrylic acid removal using powdered activated carbon
Authors: Kumar A.
Prasad, Basheshwar Rajendra
Mishra I.M.
Published in: Journal of Hazardous Materials
Abstract: The potential of powdered activated carbon (PAC) for the adsorption of acrylic acid (AA) from aqueous solution was studied at the initial concentration (C0) in the range of 50-500 mg/l over the temperature range of 303-348 K. The equilibrium adsorption studies were carried out to evaluate the effect of adsorbent dosage and contact time, change in pH by adding adsorbents and the initial concentration. Langmuir, Freundlich and Redlich-Peterson (R-P) equilibrium isotherm models were tested to represent the data. Error functions were used to test their validity to fit of the adsorption data with the isotherm and kinetic models. The Freundlich isotherm equation is found to best represent the equilibrium separation data in the temperature range of 303-348 K. The maximum adsorption capacity of AA onto PAC was obtained as qm = 36.23 mg/g with an optimum PAC dosage w = 20 g / l at 303 K for C0 = 100 mg/l. The pseudo-second-order kinetics is found to represent the experimental AA-PAC data. The negative value of ? Ga do (-16.60 to -18.18 kJ/mol K) indicate the feasibility and spontaneity of the adsorption process. © 2009 Elsevier B.V. All rights reserved.
Citation: Journal of Hazardous Materials (2010), 176(43833): 774-783
URI: https://doi.org/10.1016/j.jhazmat.2009.11.102
http://repository.iitr.ac.in/handle/123456789/1954
Issue Date: 2010
Keywords: Acrylic acid
Adsorption kinetics
Equilibrium adsorption
Isotherms
Powdered activated carbon
Thermodynamics
ISSN: 3043894
Author Scopus IDs: 57211377542
15838004000
23668474600
Author Affiliations: Kumar, A., Department of Chemical Engineering, National Institute of Technology, Rourkela, Rourkela, 769008 Orissa, India
Prasad, B., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
Mishra, I.M., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
Corresponding Author: Kumar, A.; Department of Chemical Engineering, National Institute of Technology, Rourkela, Rourkela, 769008 Orissa, India; email: arvinpch@yahoo.co.in
Appears in Collections:Journal Publications [CH]

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