Cr(VI) biosorption from aqueous solutions using free and immobilized biomass of Lentinus sajor-caju: preparation and kinetic characterization

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dc.contributor.authorArıca, M. Yakup
dc.contributor.authorBayramoğlu, Gülay
dc.date.accessioned2020-06-25T17:40:46Z
dc.date.available2020-06-25T17:40:46Z
dc.date.issued2005
dc.departmentKırıkkale Üniversitesi
dc.description.abstractThe potential use of the free and immobilized mycelia (in carboxymethylcellulose (CMC)) of Lentinus sajor-caju to remove hexavalent form of chromium ions, Cr(VI), from aqueous solutions was evaluated using CMC bead as a control system for immobilised form of fungus. The CMC beads containing immobilized fungus mycelia were incubated for the uniform growth on the beads surface at 30degreesC for 3 days. Effects of pH, biosorption time, initial concentration and biosorbent dosages on the biosorption of Cr(VI) ions were studied. The biosorption of Cr(VI) ions on the biosorbents showed a highest value at around pH 2.0. The biosorption of Cr(VI) ions on both free and immobilized L. sajor-caju biomass (mg/g) was increased as the initial concentration of Cr(VI) ions increased in the medium. Biosorption equilibrium was established in about 2.0 h. The determined maximum biosorption capacities of the free and immobilized fungus were 18.9 and 32.2 mg/g dry weight, respectively. The biosorption equilibrium was also represented with Langmuir and Freundlich adsorption isotherms. The biosorption of Cr(VI) on these biomasses follows pseudo-second-order kinetics. The temperature change in the range of 5-40degreesC affected the biosorption capacities of the biosorbents. The biosorbent systems can be regenerated using 0.1 M NaOH, with more than 95% recovery, the biosorbents reused in five biosorption-desorption cycles without any considerable loss in the biosorption capacity. (C) 2004 Elsevier B.V. All rights reserved.en_US
dc.identifier.citationclosedAccessen_US
dc.identifier.doi10.1016/j.colsurfa.2004.11.012
dc.identifier.endpage211en_US
dc.identifier.issn0927-7757
dc.identifier.issue1-3en_US
dc.identifier.scopus2-s2.0-12344336173
dc.identifier.scopusqualityQ1
dc.identifier.startpage203en_US
dc.identifier.urihttps://doi.org/10.1016/j.colsurfa.2004.11.012
dc.identifier.urihttps://hdl.handle.net/20.500.12587/3543
dc.identifier.volume253en_US
dc.identifier.wosWOS:000226934900024
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Bven_US
dc.relation.ispartofColloids And Surfaces A-Physicochemical And Engineering Aspects
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCr(IV)en_US
dc.subjectheavy metalen_US
dc.subjectCMCen_US
dc.subjectbiosorptionen_US
dc.subjectLentinus sajor-cajuen_US
dc.titleCr(VI) biosorption from aqueous solutions using free and immobilized biomass of Lentinus sajor-caju: preparation and kinetic characterizationen_US
dc.typeArticle

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