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Biosorption of total chromium from aqueous solution by red algae (Ceramium virgatum): equilibrium, kinetic and thermodynamic studies.
J Hazard Mater. 2008 Dec 30; 160(2-3):349-55.JH

Abstract

This study focused on the biosorption of total chromium onto red algae (Ceramium virgatum) biomass from aqueous solution. Experimental parameters affecting biosorption process such as pH, contact time, biomass dosage and temperature were studied. Langmuir, Freundlich and Dubinin-Radushkevich (D-R) models were applied to describe the biosorption isotherms. Langmuir model fitted the equilibrium data better than the Freundlich isotherm. The biosorption capacity of C. virgatum biomass for total chromium was found to be 26.5mg/g at pH 1.5 and 10g/L biomass dosage, 90min equilibrium time and 20 degrees C. From the D-R isotherm model, the mean free energy was calculated as 9.7kJ/mol, indicating that the biosorption of total chromium was taken place by chemisorption. The calculated thermodynamic parameters (DeltaG degrees , DeltaH degrees and DeltaS degrees) showed that the biosorption of total chromium onto C. virgatum biomass was feasible, spontaneous and exothermic at 20-50 degrees C. Kinetic evaluation of experimental data showed that the biosorption processes of total chromium followed well pseudo-second-order kinetics.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Sari A
Department of Chemistry, Gaziosmanpasa University, 60250 Tokat, Turkey. asari@gop.edu.tr
Tuzen M
No affiliation info available

MeSH

AdsorptionBiomassChromiumHydrogen-Ion ConcentrationIndicators and ReagentsKineticsModels, StatisticalRhodophytaSolutionsSpectroscopy, Fourier Transform InfraredTemperatureThermodynamicsWaterWater MicrobiologyWater Pollutants, Chemical

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18406520

Citation

Sari, Ahmet, and Mustafa Tuzen. "Biosorption of Total Chromium From Aqueous Solution By Red Algae (Ceramium Virgatum): Equilibrium, Kinetic and Thermodynamic Studies." Journal of Hazardous Materials, vol. 160, no. 2-3, 2008, pp. 349-55.
Sari A, Tuzen M. Biosorption of total chromium from aqueous solution by red algae (Ceramium virgatum): equilibrium, kinetic and thermodynamic studies. J Hazard Mater. 2008;160(2-3):349-55.
Sari, A., & Tuzen, M. (2008). Biosorption of total chromium from aqueous solution by red algae (Ceramium virgatum): equilibrium, kinetic and thermodynamic studies. Journal of Hazardous Materials, 160(2-3), 349-55. https://doi.org/10.1016/j.jhazmat.2008.03.005
Sari A, Tuzen M. Biosorption of Total Chromium From Aqueous Solution By Red Algae (Ceramium Virgatum): Equilibrium, Kinetic and Thermodynamic Studies. J Hazard Mater. 2008 Dec 30;160(2-3):349-55. PubMed PMID: 18406520.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Biosorption of total chromium from aqueous solution by red algae (Ceramium virgatum): equilibrium, kinetic and thermodynamic studies. AU - Sari,Ahmet, AU - Tuzen,Mustafa, Y1 - 2008/03/08/ PY - 2007/12/05/received PY - 2008/03/01/revised PY - 2008/03/03/accepted PY - 2008/4/15/pubmed PY - 2009/2/10/medline PY - 2008/4/15/entrez SP - 349 EP - 55 JF - Journal of hazardous materials JO - J Hazard Mater VL - 160 IS - 2-3 N2 - This study focused on the biosorption of total chromium onto red algae (Ceramium virgatum) biomass from aqueous solution. Experimental parameters affecting biosorption process such as pH, contact time, biomass dosage and temperature were studied. Langmuir, Freundlich and Dubinin-Radushkevich (D-R) models were applied to describe the biosorption isotherms. Langmuir model fitted the equilibrium data better than the Freundlich isotherm. The biosorption capacity of C. virgatum biomass for total chromium was found to be 26.5mg/g at pH 1.5 and 10g/L biomass dosage, 90min equilibrium time and 20 degrees C. From the D-R isotherm model, the mean free energy was calculated as 9.7kJ/mol, indicating that the biosorption of total chromium was taken place by chemisorption. The calculated thermodynamic parameters (DeltaG degrees , DeltaH degrees and DeltaS degrees) showed that the biosorption of total chromium onto C. virgatum biomass was feasible, spontaneous and exothermic at 20-50 degrees C. Kinetic evaluation of experimental data showed that the biosorption processes of total chromium followed well pseudo-second-order kinetics. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/18406520/Biosorption_of_total_chromium_from_aqueous_solution_by_red_algae__Ceramium_virgatum_:_equilibrium_kinetic_and_thermodynamic_studies_ DB - PRIME DP - Unbound Medicine ER -