Equilibrium isotherm modeling, kinetics and thermodynamics study for removal of lead from waste water

Chowdhury, Z.Z. and Rashid, A.K. and Zain, S.M. (2011) Equilibrium isotherm modeling, kinetics and thermodynamics study for removal of lead from waste water. E-Journal of Chemistry, 8 (1). pp. 333-339. ISSN 0973-4945

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Abstract

The low cost adsorbent palm oil fuel ash (POFA) derived from an agricultural waste material was investigated as a replacement of current expensive methods for treating wastewater contaminated by Pb(II) cation. Adsorption studies were carried out to delineate the effect of contact time, temperature, pH and initial metal ion concentration. The experimental data followed pseudo second order kinetics which confirms chemisorptions. The values of Langmuir dimensionless constant, R(L) and Freundlich constant, 1/n were less than 1 representing favorable process for adsorption. Thermodynamic parameters such as Delta G degrees, Delta H degrees and Delta S degrees, related to Gibbs free energy, enthalpy and entropy were evaluated. It was concluded that, chemically treated palm oil fuel ash (POFA) can be used successfully for adsorption of Pb(II) from aqueous solution.

Item Type: Article
Additional Information: Department of Chemistry, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science > Dept of Chemistry
Depositing User: Miss Malisa Diana
Date Deposited: 09 May 2013 01:54
Last Modified: 09 May 2013 01:54
URI: http://eprints.um.edu.my/id/eprint/6054

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