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Equilibrium, thermodynamic and kinetic studies for the biosorption of aqueous lead(II) ions onto the seed husk of Calophyllum inophyllum.
J Hazard Mater. 2010 May 15; 177(1-3):829-35.JH

Abstract

Biosorption of lead(II) ions from aqueous solution onto the seed husk of Calophyllum inophyllum was investigated in a batch system. Equilibrium, thermodynamics and kinetic studies were conducted by considering the effects of pH, initial metal ion concentration, contact time, and temperature. The results showed that the uptake of the metal ions increased with increase in initial metal ion concentration. The pH for optimum adsorption was 4 for the Pb(II) ions (q=4.86 mg/g and 97.2% adsorption). Langmuir isotherm described the biosorption of Pb(II) ions onto the biomass (R(2)=0.9531) better than the Freundlich model (R(2)=0.7984), and the Temkin model (R(2)=0.8761). Biosorption kinetics data obtained for the metal ions sorption were fitted using pseudo-first-order and pseudo-second-order. It was found that the kinetics data fitted well into the pseudo-second-order kinetics. Thermodynamic parameters such as Gibbs free energy (DeltaG), standard enthalpy (DeltaH) and standard entropy (DeltaS) were evaluated. The result showed that biosorption of the metal ion onto C. inophyllum biomass was spontaneous and endothermic in nature. The results of FTIR (Fourier-transform infrared spectroscopy) revealed that carboxyl, amine, and hydroxyl groups on the biomass surface were involved in the adsorption of Pb(II) ions.

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Authors+Show Affiliations

Lawal OS
Department of Chemical Sciences, Faculty of Science, Olabisi Onabanjo University, PMB 2002, Ago Iwoye, Ogun State, Nigeria.
Sanni AR
No affiliation info available
Ajayi IA
No affiliation info available
Rabiu OO
No affiliation info available

MeSH

AdsorptionBiodegradation, EnvironmentalCalophyllumKineticsLeadSeedsThermodynamicsWater Pollutants, Chemical

Pub Type(s)

Journal Article

Language

eng

PubMed ID

20083344

Citation

Lawal, O S., et al. "Equilibrium, Thermodynamic and Kinetic Studies for the Biosorption of Aqueous lead(II) Ions Onto the Seed Husk of Calophyllum Inophyllum." Journal of Hazardous Materials, vol. 177, no. 1-3, 2010, pp. 829-35.
Lawal OS, Sanni AR, Ajayi IA, et al. Equilibrium, thermodynamic and kinetic studies for the biosorption of aqueous lead(II) ions onto the seed husk of Calophyllum inophyllum. J Hazard Mater. 2010;177(1-3):829-35.
Lawal, O. S., Sanni, A. R., Ajayi, I. A., & Rabiu, O. O. (2010). Equilibrium, thermodynamic and kinetic studies for the biosorption of aqueous lead(II) ions onto the seed husk of Calophyllum inophyllum. Journal of Hazardous Materials, 177(1-3), 829-35. https://doi.org/10.1016/j.jhazmat.2009.12.108
Lawal OS, et al. Equilibrium, Thermodynamic and Kinetic Studies for the Biosorption of Aqueous lead(II) Ions Onto the Seed Husk of Calophyllum Inophyllum. J Hazard Mater. 2010 May 15;177(1-3):829-35. PubMed PMID: 20083344.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Equilibrium, thermodynamic and kinetic studies for the biosorption of aqueous lead(II) ions onto the seed husk of Calophyllum inophyllum. AU - Lawal,O S, AU - Sanni,A R, AU - Ajayi,I A, AU - Rabiu,O O, Y1 - 2010/01/07/ PY - 2009/07/01/received PY - 2009/12/23/revised PY - 2009/12/26/accepted PY - 2010/1/20/entrez PY - 2010/1/20/pubmed PY - 2010/6/10/medline SP - 829 EP - 35 JF - Journal of hazardous materials JO - J Hazard Mater VL - 177 IS - 1-3 N2 - Biosorption of lead(II) ions from aqueous solution onto the seed husk of Calophyllum inophyllum was investigated in a batch system. Equilibrium, thermodynamics and kinetic studies were conducted by considering the effects of pH, initial metal ion concentration, contact time, and temperature. The results showed that the uptake of the metal ions increased with increase in initial metal ion concentration. The pH for optimum adsorption was 4 for the Pb(II) ions (q=4.86 mg/g and 97.2% adsorption). Langmuir isotherm described the biosorption of Pb(II) ions onto the biomass (R(2)=0.9531) better than the Freundlich model (R(2)=0.7984), and the Temkin model (R(2)=0.8761). Biosorption kinetics data obtained for the metal ions sorption were fitted using pseudo-first-order and pseudo-second-order. It was found that the kinetics data fitted well into the pseudo-second-order kinetics. Thermodynamic parameters such as Gibbs free energy (DeltaG), standard enthalpy (DeltaH) and standard entropy (DeltaS) were evaluated. The result showed that biosorption of the metal ion onto C. inophyllum biomass was spontaneous and endothermic in nature. The results of FTIR (Fourier-transform infrared spectroscopy) revealed that carboxyl, amine, and hydroxyl groups on the biomass surface were involved in the adsorption of Pb(II) ions. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/20083344/Equilibrium_thermodynamic_and_kinetic_studies_for_the_biosorption_of_aqueous_lead_II__ions_onto_the_seed_husk_of_Calophyllum_inophyllum_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(10)00006-3 DB - PRIME DP - Unbound Medicine ER -