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Biosorption of Ni (II) by Schizosaccharomyces pombe: kinetic and thermodynamic studies

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dc.contributor.authorSAYAR, AHMET ALP
dc.contributor.authorsDurmaz-Sam, Selcen; Sayar, Nihat Alpagu; Topal-Sarikaya, Aysegul; Sayar, Ahmet Alp
dc.date.accessioned2022-03-12T18:04:53Z
dc.date.available2022-03-12T18:04:53Z
dc.date.issued2011
dc.description.abstractThe potential of the dried yeast, wild-type Schizosaccharomyces pombe, to remove Ni(II) ion was investigated in batch mode under varying experimental conditions including pH, temperature, initial metal ion concentration and biosorbent dose. Optimum pH for biosorption was determined as 5.0. The highest equilibrium uptake of Ni(II) on S. pombe, q(e), was obtained at 25 degrees C as 33.8 mg g(-1). It decreased with increasing temperature within a range of 25-50 degrees C denoting an exothermic behaviour. Increasing initial Ni(II) concentration up to 400 mg L-1 also elevated equilibrium uptake. No more adsorption took place beyond 400 mg L-1. Equilibrium data fitted better to Langmuir model rather than Freundlich model. Sips, Redlich-Peterson, and Kahn isotherm equations modelled the investigated system with a performance not better than Langmuir. Kinetic model evaluations showed that Ni(II) biosorption process followed the pseudo-second order rate model while rate constants decreased with increasing temperature. Gibbs free energy changes (Delta G degrees) of the system at 25, 30, 35 and 50 degrees C were found as -1.47E + 4, -1.49E + 4, -1.51E + 4, and -1.58E + 4 J mol(-1), respectively. Enthalpy change (Delta H degrees) was determined as -2.57E + 3 J mol(-1) which also supports the observed exothermic behaviour of the biosorption process. Entropy change (Delta S degrees) had a positive value (40.75 J mol(-1) K-1) indicating an increase in randomness during biosorption process. Consequently, S. pombe was found to be a potential low-cost agent for Ni(II) in slightly acidic aqueous medium. In parallel, it has been assumed to act as a separating agent for Ni(II) recovery from its aqueous solution.
dc.identifier.doi10.1007/s00449-011-0550-y
dc.identifier.eissn1615-7605
dc.identifier.issn1615-7591
dc.identifier.pubmed21604055
dc.identifier.urihttps://hdl.handle.net/11424/230507
dc.identifier.wosWOS:000298948400009
dc.language.isoeng
dc.publisherSPRINGER
dc.relation.ispartofBIOPROCESS AND BIOSYSTEMS ENGINEERING
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectBiosorption
dc.subjectSchizosaccharomyces pombe
dc.subjectAdsorption isotherms
dc.subjectProcess kinetics and thermodynamics
dc.subjectHEAVY-METALS
dc.subjectASPERGILLUS-NIGER
dc.subjectSACCHAROMYCES-CEREVISIAE
dc.subjectRHIZOPUS-ARRHIZUS
dc.subjectNICKEL(II) IONS
dc.subjectADSORPTION
dc.subjectREMOVAL
dc.subjectEQUILIBRIUM
dc.subjectSORPTION
dc.subjectCOPPER
dc.titleBiosorption of Ni (II) by Schizosaccharomyces pombe: kinetic and thermodynamic studies
dc.typearticle
dspace.entity.typePublication
local.avesis.idecfaee51-5fe3-4c0f-9a9d-d3b45f11adc4
local.import.packageSS17
local.indexed.atWOS
local.indexed.atSCOPUS
local.indexed.atPUBMED
local.journal.numberofpages9
oaire.citation.endPage1005
oaire.citation.issue8
oaire.citation.startPage997
oaire.citation.titleBIOPROCESS AND BIOSYSTEMS ENGINEERING
oaire.citation.volume34
relation.isAuthorOfPublication279446ed-107e-4bcc-b5a2-21a8f8fbc72c
relation.isAuthorOfPublication.latestForDiscovery279446ed-107e-4bcc-b5a2-21a8f8fbc72c

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