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Equilibrium and thermodynamic studies on biosorption of Pb(II) onto Candida albicans biomass.
J Hazard Mater. 2009 Jan 15; 161(1):62-7.JH

Abstract

Biosorption of Pb(II) ions from aqueous solutions was studied in a batch system by using Candida albicans. The optimum conditions of biosorption were determined by investigating the initial metal ion concentration, contact time, temperature, biosorbent dose and pH. The extent of metal ion removed increased with increasing contact time, initial metal ion concentration and temperature. Biosorption equilibrium time was observed in 30min. The Freundlich and Langmuir adsorption models were used for the mathematical description of biosorption equilibrium and isotherm constants were also evaluated. The maximum biosorption capacity of Pb(II) on C. albicans was determined as 828.50+/-1.05, 831.26+/-1.30 and 833.33+/-1.12mgg(-1), respectively, at different temperatures (25, 35 and 45 degrees C). Biosorption showed pseudo second-order rate kinetics at different initial concentration of Pb(II) and different temperatures. The activation energy of the biosorption (Ea) was estimated as 59.04kJmol(-1) from Arrhenius equation. Using the equilibrium constant value obtained at different temperatures, the thermodynamic properties of the biosorption (DeltaG degrees , DeltaH degrees and DeltaS degrees) were also determined. The results showed that biosorption of Pb(II) ions on C. albicans were endothermic and spontaneous. The optimum initial pH for Pb(II) was determined as pH 5.0. FTIR spectral analysis of Pb(II) adsorbed and unadsorbed C. albicans biomass was also discussed.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Baysal Z
Department of Chemistry, Faculty of Science-Art, Dicle University, Diyarbakir, Turkey. zbaysal@dicle.edu.tr
Cinar E
No affiliation info available
Bulut Y
No affiliation info available
Alkan H
No affiliation info available
Dogru M
No affiliation info available

MeSH

AdsorptionBiomassCandida albicansCationsHydrogen-Ion ConcentrationKineticsLeadSpectroscopy, Fourier Transform InfraredThermodynamicsTime Factors

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18434004

Citation

Baysal, Zübeyde, et al. "Equilibrium and Thermodynamic Studies On Biosorption of Pb(II) Onto Candida Albicans Biomass." Journal of Hazardous Materials, vol. 161, no. 1, 2009, pp. 62-7.
Baysal Z, Cinar E, Bulut Y, et al. Equilibrium and thermodynamic studies on biosorption of Pb(II) onto Candida albicans biomass. J Hazard Mater. 2009;161(1):62-7.
Baysal, Z., Cinar, E., Bulut, Y., Alkan, H., & Dogru, M. (2009). Equilibrium and thermodynamic studies on biosorption of Pb(II) onto Candida albicans biomass. Journal of Hazardous Materials, 161(1), 62-7. https://doi.org/10.1016/j.jhazmat.2008.02.122
Baysal Z, et al. Equilibrium and Thermodynamic Studies On Biosorption of Pb(II) Onto Candida Albicans Biomass. J Hazard Mater. 2009 Jan 15;161(1):62-7. PubMed PMID: 18434004.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Equilibrium and thermodynamic studies on biosorption of Pb(II) onto Candida albicans biomass. AU - Baysal,Zübeyde, AU - Cinar,Ercan, AU - Bulut,Yasemin, AU - Alkan,Hüseyin, AU - Dogru,Mehmet, Y1 - 2008/03/20/ PY - 2007/01/31/received PY - 2007/11/21/revised PY - 2008/02/29/accepted PY - 2008/4/25/pubmed PY - 2009/2/25/medline PY - 2008/4/25/entrez SP - 62 EP - 7 JF - Journal of hazardous materials JO - J Hazard Mater VL - 161 IS - 1 N2 - Biosorption of Pb(II) ions from aqueous solutions was studied in a batch system by using Candida albicans. The optimum conditions of biosorption were determined by investigating the initial metal ion concentration, contact time, temperature, biosorbent dose and pH. The extent of metal ion removed increased with increasing contact time, initial metal ion concentration and temperature. Biosorption equilibrium time was observed in 30min. The Freundlich and Langmuir adsorption models were used for the mathematical description of biosorption equilibrium and isotherm constants were also evaluated. The maximum biosorption capacity of Pb(II) on C. albicans was determined as 828.50+/-1.05, 831.26+/-1.30 and 833.33+/-1.12mgg(-1), respectively, at different temperatures (25, 35 and 45 degrees C). Biosorption showed pseudo second-order rate kinetics at different initial concentration of Pb(II) and different temperatures. The activation energy of the biosorption (Ea) was estimated as 59.04kJmol(-1) from Arrhenius equation. Using the equilibrium constant value obtained at different temperatures, the thermodynamic properties of the biosorption (DeltaG degrees , DeltaH degrees and DeltaS degrees) were also determined. The results showed that biosorption of Pb(II) ions on C. albicans were endothermic and spontaneous. The optimum initial pH for Pb(II) was determined as pH 5.0. FTIR spectral analysis of Pb(II) adsorbed and unadsorbed C. albicans biomass was also discussed. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/18434004/Equilibrium_and_thermodynamic_studies_on_biosorption_of_Pb_II__onto_Candida_albicans_biomass_ DB - PRIME DP - Unbound Medicine ER -