Evaluating 3-D and 1-D mathematical models for mass transport in heterogeneous biofilms

Eberhard Friedrich Morgenroth, H. Eberl, M. C. M. van Loosdrecht

    Research output: Contribution to journalConference articleResearchpeer-review


    Results from a three dimensional model for heterogeneous biofilms including the numerical solution of hydrodynamics were compared to simplified one dimensional models. A one dimensional model with a variable diffusion coefficient over the thickness of the biofilm was well suited to approximate average concentration profiles of three dimensional simulations of rough biofilms. A new compartmentalized one dimensional model is presented that is then used to evaluate effects of pores and channels on microbial competition in heterogeneous biofilms. Surface and pore regions of the biofilm are modeled using separate compartments coupled by a convective link. Local concentration profiles from the three dimensional simulations could be adequately reproduced using the compartmentalized one dimensional model. The compartmentalized one dimensional model was then used to evaluate bacterial competition in a growing biofilm and in a mushroom type biofilm assuming different modes of detachment.
    Original languageEnglish
    JournalWater Science and Technology
    Issue number4-5
    Pages (from-to)347-356
    Publication statusPublished - 2000
    Event4th IAWQ International Conference on Biofilm Systems - New York (NY), United States
    Duration: 17 Oct 199920 Oct 1999
    Conference number: 4


    Conference4th IAWQ International Conference on Biofilm Systems
    Country/TerritoryUnited States
    CityNew York (NY)


    • diffusion
    • 1-D
    • biofilm
    • modeling
    • mass transport
    • advection
    • 3-D
    • heterogeneous


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