Last data updates: 19 June 2015
Ho, Y.S. and Ofomaja, A.E. (2005), Kinetics and thermodynamics of lead ion sorption on palm
kernel fibre from aqueous solution. Process Biochemistry, 40 (11), 3455-3461.
Document type: Article Language: English Cited references: 22 Times cited: 110 Times self cited: 15
Abstract: The kinetics and thermodynamics of lead ions sorption from aqueous solution on palm
kernel fibre have been investigated. The experimental data was analyzed by Langmuir,
Freundlich and Redlich-Peterson isotherms using linear coefficient of determination and the
non-linear Chi-square test. The equilibrium sorption capacity of lead ions was determined from
the Langmuir equation and found to be 49.9 mg/g at 65°C. A batch sorption model, based on the
assumption of the pseudo-second-order mechanism, was applied to predict the rate constant of
sorption, the equilibrium sorption capacity and the initial sorption rate with the effect of
temperature. An activation energy of sorption was evaluated as 13.5 kJ/mol for the sorption of
lead ions on palm kernel fibre. Various thermodynamic parameters, Delta H degrees, Delta S
degrees and Delta G degrees, were computed from equilibrium constant values. The results show
that the sorption of the lead ions on palm kernel fibre is a spontaneous and endothermic nature
process. (c) 2005 Elsevier Ltd. All rights reserved.
Author Keywords: Adsorption; Lead; Palm Kernel Fibre; Kinetic
Keywords Plus: Sphagnum Moss Peat; Removal; Adsorption; Water; Adsorbent; Sorbents;
Children
Addresses: Ho YS (reprint author), Peking Univ, Coll Environm Sci, Dept Environm Sci, Beijing,
100871 Peoples R China
Peking Univ, Coll Environm Sci, Dept Environm Sci, Beijing, 100871 Peoples R China
Taipei Med Univ, Sch Publ Hlth, Taipei, 11014 Taiwan
Univ Benin, Fac Sci, Dept Chem, Benin, Edo State Nigeria
E-mail Addresses: dr_ysho@hotmail.com
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