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dc.contributor.authorBeyenal, Haluk
dc.contributor.authorTanyolac, A.
dc.contributor.authorLewandowski, Zbigniew
dc.identifier.citationBeyenal, H., A. Tanyolac, and Z. Lewandowski, "Measurement of Local Effective Diffusivity in Heterogeneous Biofilms," Water Science and Technology, 38:171-178 (1998).en_US
dc.description.abstractWe have developed a novel technique to measure local effective diffusivity distribution in heterogeneous biofilms. Mobile microelectrodes (tip diameter 10 μm) and the limiting current technique were employed to measure the effective diffusivity of electroactive species introduced to natural and artificial biofilms. We calibrated the microelectrodes in artificial biofilms of known effective diffusivity and known density. In mixed population biofilms, local effective diffusivity varied from one location to another and decreased toward the bottom of the biofilm. We related local effective diffusivity to local biofilm density using an empirical equation. Surface-averaged biomass density depended on liquid flow velocity at which the biofilms were grown. The higher the flow velocity, the denser were the biofilms. Our technique permits fast evaluation of local effective diffusivity and biofilm density in heterogeneous biofilms.en_US
dc.titleMeasurement of local effective diffusivity in heterogeneous biofilmsen_US
mus.citation.journaltitleWater Science and Technologyen_US
mus.identifier.categoryEngineering & Computer Scienceen_US
mus.relation.collegeCollege of Engineeringen_US
mus.relation.departmentCenter for Biofilm Engineering.en_US
mus.relation.departmentChemical & Biological Engineering.en_US
mus.relation.departmentChemical Engineering.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.relation.researchgroupCenter for Biofilm Engineering.en_US

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