Effects of ionic environments on bovine serum albumin fouling in a cross-flow ultrafiltration system

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dc.contributor.authorSalgin, Sema
dc.date.accessioned2019-07-27T12:10:23Z
dc.date.accessioned2019-07-28T10:16:58Z
dc.date.available2019-07-27T12:10:23Z
dc.date.available2019-07-28T10:16:58Z
dc.date.issued2007
dc.departmentCumhuriyet Univ, Fac Engn, Dept Chem Engn, TR-58140 Sivas, Turkeyen_US
dc.description.abstractThe influence of electrostatic interactions on membrane fouling during the separation of bovine serum albumin (BSA) from solution was studied in a cross-flow ultratiltration system. Experiments were carried out at different pH values between 3.78 and 7.46; and for different ionic strengths between 0.001 M and 0.1 M. The changes in permeate flux, cake layer resistance, zeta potentials of BSA and polyether sulfone (PES) membranes, and electrostatic interaction energies, were evaluated. At all of the ionic conditions studied, PES membranes are negatively charged. However, BSA molecules are either negatively or positively charged depending on the ionic environment. Whereas the cake layer resistance decreased with increasing pH and ionic strength, the permeate fluxes increased. The calculated electrostatic energy was a minimum at the isoelectric point (IEP) of BSA. However, at this point, the cake resistances corresponding to fouling at each ionic strength, were not minimized. Below the IEP of BSA, the electrostatic forces were attractive, while above the IEP, repulsive electrostatic forces were dominant.en_US
dc.identifier.doi10.1002/ceat.200600342en_US
dc.identifier.endpage260en_US
dc.identifier.issn0930-7516
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-33846954334en_US
dc.identifier.scopusqualityQ2
dc.identifier.startpage255en_US
dc.identifier.urihttps://dx.doi.org/10.1002/ceat.200600342
dc.identifier.urihttps://hdl.handle.net/20.500.12418/10659
dc.identifier.volume30en_US
dc.identifier.wosWOS:000244295800013en_US
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherWILEY-V C H VERLAG GMBHen_US
dc.relation.ispartofCHEMICAL ENGINEERING & TECHNOLOGYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectbiomoleculesen_US
dc.subjectcross-flow ultrafiltrationen_US
dc.subjectfoulingen_US
dc.subjectmembranesen_US
dc.titleEffects of ionic environments on bovine serum albumin fouling in a cross-flow ultrafiltration systemen_US
dc.typeArticleen_US

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