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dc.contributor.authorTarı, Canan
dc.contributor.authorVennapusa, Rami Reddy
dc.contributor.authorCabrera, Rosa B.
dc.contributor.authorFernandez-Lahore, Marcelo
dc.date.accessioned2016-11-11T08:20:23Z
dc.date.available2016-11-11T08:20:23Z
dc.date.issued2008-02
dc.identifier.citationTarı, C., Vennapusa, R. R., Cabrera, R. B., and Fernandez-Lahore, M. (2008). Colloid deposition experiments as a diagnostic tool for biomass attachment onto bioproduct adsorbent surfaces. Journal of Chemical Technology and Biotechnology, 83(2), 183-191. doi:10.1002/jctb.1852en_US
dc.identifier.issn0268-2575
dc.identifier.urihttp://doi.org/10.1002/jctb.1852
dc.identifier.urihttp://hdl.handle.net/11147/2424
dc.description.abstractBackground: Detrimental processing conditions can be expected in any downstream operation where direct contacting between a crude feedstock and a reactive solid phase is supposed to occur. In this paper we have investigated the factors influencing intact yeast cells deposition onto anion and cation exchangers currently utilized for expanded-bed adsorption of biotechnological products. The aim of this study was twofold: (a)to confirm previous findings relating biomass deposition with surface energetics according to the extended Derjaguin, Landau, Verwey and Overbeek theory (XDLVO) theory; and (b) to provide a simple experimental tool to evaluate biomass deposition onto process surfaces. Results: Biomass deposition experiments were performed on an automated workstation utilizing a packedbed format. Two commercial ion exchangers intended for the direct capture of bioproducts in the presence of suspended biological particles were employed. Intact yeast cells in the late exponential phase of growth were selected as model bio-colloids. Cell deposition was systematically evaluated as a function of fluid-phase conductivity and quantitatively expressed as a biomass deposition parameter (α). Conclusion: α ≤ 0.15 was established as a criterion to reflect negligible biomass adhesion to the process support(s). Biomass deposition experiments further confirmed predictions made on the basis of free interfacial energy calculations as per the extended DLVO approach.en_US
dc.description.sponsorshipInter-American Development Bank (BID) 1201/OC AR 649 PICT 08352; Jacobs University (IUB/2130-90050) and TÜBİTAKen_US
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.isversionof10.1002/jctb.1852en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAttachment efficiencyen_US
dc.subjectBiomass depositionen_US
dc.subjectDirect captureen_US
dc.subjectInterfacial energyen_US
dc.subjectBiochemistryen_US
dc.titleColloid deposition experiments as a diagnostic tool for biomass attachment onto bioproduct adsorbent surfacesen_US
dc.typearticleen_US
dc.contributor.authorIDTR41331en_US
dc.contributor.iztechauthorTarı, Canan
dc.relation.journalJournal of Chemical Technology and Biotechnologyen_US
dc.contributor.departmentIzmir Institute of Technology. Food Engineeringen_US
dc.identifier.volume83en_US
dc.identifier.issue2en_US
dc.identifier.startpage183en_US
dc.identifier.endpage191en_US
dc.identifier.wosWOS:000253098500011
dc.identifier.scopusSCOPUS:2-s2.0-38849124842
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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