Biosorption of Cd, Cu, Ni, Mn and Zn from aqueous solutions by thermophilic bacteria, Geobacillus toebii sub.sp decanicus and Geobacillus thermoleovorans sub.sp stromboliensis: Equilibrium, kinetic and thermodynamic studies

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dc.contributor.authorOzdemir, Sadin
dc.contributor.authorKilinc, Ersin
dc.contributor.authorPoli, Annarita
dc.contributor.authorNicolaus, Barbara
dc.contributor.authorGuven, Kemal
dc.date.accessioned2024-04-24T16:11:01Z
dc.date.available2024-04-24T16:11:01Z
dc.date.issued2009
dc.departmentDicle Üniversitesien_US
dc.description.abstractBiosorption of each of the ions Cd2+, Cu2+, Ni2+, Zn2+ and Mn2+ on Geobacillus toebii sub.sp. decanicus (G1) and Geobacillus thermoleovorans sub.sp. stromboliensis (G2) in a batch stirred system was investigated. The equilibrium adsorptive quantity was determined to be a function of the solution pH, contact time, biomass concentration, initial metal concentrations and temperature. The results obtained from biosorption experiments are used to understand the driving forces that govern the interaction between metal ions and a biosorbent. The experimental results were fitted well to the Scatchard plot, Langmuir, Freundlich, Dubinin-Radushkevich (D-R) isotherms. According to the parameters of the Langmuir isotherms, the maximum biosorption capacities of Cd2+, Cu2+, Ni2+, Zn2+ and Mn2+ for G2 were 38.8, 41.5, 42, 29 and 23.2 mg/g, respectively, while 29.2, 48.5, 21, 21.1 and 13.9 mg/g for G1, respectively. The mean free energy values evaluated from the D-R model indicated that the biosorptions of studied heavy metal ions onto bacteria were taken place by physical interaction. The biosorption mechanisms of studied metal ions on to the biosorbents were analysed by FT-IR spectra of G1 and G2 with and without metal ions. The first order and second order coefficients were obtained at 298, 308, 318 and 343 K. The experimental results were used to calculate the thermodynamic parameters. (C) 2009 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.cej.2009.04.041
dc.identifier.endpage206en_US
dc.identifier.issn1385-8947
dc.identifier.issn1873-3212
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-67649506223
dc.identifier.scopusqualityQ1
dc.identifier.startpage195en_US
dc.identifier.urihttps://doi.org/10.1016/j.cej.2009.04.041
dc.identifier.urihttps://hdl.handle.net/11468/15229
dc.identifier.volume152en_US
dc.identifier.wosWOS:000274348400027
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofChemical Engineering Journal
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBiosorptionen_US
dc.subjectHeavy Metalsen_US
dc.subjectThermophilic Bacteriaen_US
dc.subjectKineticsen_US
dc.subjectThermodynamicen_US
dc.subjectIsothermen_US
dc.titleBiosorption of Cd, Cu, Ni, Mn and Zn from aqueous solutions by thermophilic bacteria, Geobacillus toebii sub.sp decanicus and Geobacillus thermoleovorans sub.sp stromboliensis: Equilibrium, kinetic and thermodynamic studiesen_US
dc.titleBiosorption of Cd, Cu, Ni, Mn and Zn from aqueous solutions by thermophilic bacteria, Geobacillus toebii sub.sp decanicus and Geobacillus thermoleovorans sub.sp stromboliensis: Equilibrium, kinetic and thermodynamic studies
dc.typeArticleen_US

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