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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2517
Title: Chemical carbonization of papaya seed originated charcoals for sorption of Pb(II) from aqueous solution
Authors: Yadav S.K.
Singh D.K.
Sinha S.
Published in: Journal of Environmental Chemical Engineering
Abstract: Abstract The potential of chemically carbonized papaya seed charcoals (PSCs) for the effective removal of Pb(II) ions from aqueous solution has been investigated in batch experiments. Lead adsorption significantly depends on the initial concentration of Pb(II), contact time, pH, adsorbent dosage and particle size. The adsorption behavior of Pb(II) was best described by the pseudo-second order model and it can be seen that the calculated qe (cal) values agree with the experimental values. Langmuir, Freundlich, Temkin and Dubinin-Radushkevich (D-R) adsorption isotherm models were applied to represent adsorption data. The equilibrium data were well fitted by the Langmuir isotherm model by revealing the maximum sorption capacity values 188.6 and 238.09 mg/g of PSC1 and PSC2, respectively. Thermodynamic parameters showed that the process is spontaneous, feasible and endothermic. The mechanism of adsorption was also studied using Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM) analysis before and after the adsorption of lead(II) ions. PSC2 was regenerated using HCl (0.2 M) as eluent and reused for four adsorption-desorption cycles. © 2013 Elsevier Ltd.
Citation: Journal of Environmental Chemical Engineering (2014), 2(1): 9-19
URI: https://doi.org/10.1016/j.jece.2013.10.019
http://repository.iitr.ac.in/handle/123456789/2517
Issue Date: 2014
Keywords: Adsorption isotherms
Kinetics
Lead(II)
Papaya seed charcoal
Thermodynamics
ISSN: 22133437
Author Scopus IDs: 55531253500
55387279500
7403739121
Author Affiliations: Yadav, S.K., Analytical Research Laboratory, Department of Chemistry, Harcourt Butler Technological Institute, Kanpur 208002, UP, India
Singh, D.K., Analytical Research Laboratory, Department of Chemistry, Harcourt Butler Technological Institute, Kanpur 208002, UP, India
Sinha, S., Department of Chemical Engineering, Indian Institute of Technology, Roorkee 247667, UK, India
Corresponding Author: Singh, D.K.; Analytical Research Laboratory, Department of Chemistry, Harcourt Butler Technological Institute, Kanpur 208002, UP, India; email: dhruvks123@rediffmail.com
Appears in Collections:Journal Publications [CH]

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