Journal ArticleDOI
Growth and decay in an auto-/heterotrophic biofilm
Harald Horn,Dietmar C. Hempel +1 more
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The interaction among the bacteria involved and their competition for existence in the biofilm have been worked out during the transition from a heterotrophic to an auto-/heterotrophic biofilm.About:
This article is published in Water Research.The article was published on 1997-09-01. It has received 86 citations till now. The article focuses on the topics: Biofilm.read more
Citations
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Volumetric measurements of bacterial cells and extracellular polymeric substance glycoconjugates in biofilms
TL;DR: It was shown that the biofilm thicknesses determined with both methods agree well for slow-growing heterotrophic and chemoautotrophic biofilms, and the volumes and masses calculated from CLSM and the biomass calculated from gravimetric measurements were also comparable.
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Simulation of growth and detachment in biofilm systems under defined hydrodynamic conditions
TL;DR: The biofilm thickness during the homogeneous growth phase can be regarded constant throughout the reactor, but was found to be very heterogeneous during the quasi-steady-state and the washout experiments.
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Influence of growth conditions on biofilm development and mass transfer at the bulk/biofilm interface.
TL;DR: The thickness of the concentration boundary layer was found to depend on the surface structure of the biofilm, and the measured substrate conversion rates, biofilm densities and the boundary layer thickness were used to formulate an equation for the mass transfer in biofilm tube reactors.
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Influence of growth history on sloughing and erosion from biofilms.
TL;DR: It was found that for all experiments, overall detachment was a combination of erosion and sloughing where erosion had a slightly larger contribution to the overall solids removal, however,Sloughing had a significant influence on the biofilm morphology.
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Measuring local flow velocities and biofilm structure in biofilm systems with magnetic resonance imaging (MRI).
TL;DR: It is shown that the surface roughness of the biofilms can be determined in one experiment for the complete cross section of the test tubes both under flow and stagnant conditions.
References
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A multispecies biofilm model
Oskar Wanner,W. Gujer +1 more
TL;DR: Using a continuum approach and observing conservation principles, an analytical mathematical model of microbial interaction in biofilms was developed and predicts changes in biofilm thickness and describes the dynamics and spatial distribution of microbial species and substrates in the film.
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Mathematical modeling of mixed-culture biofilms.
Oskar Wanner,Peter Reichert +1 more
TL;DR: An extended MCB model with additional processes is implemented in AQUASIM, a new computer program designed for the analysis of aquatic systems, which is used here to illustrate and discuss the effect of the additional processes on MCB behavior.
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Density, porosity, and pore structure of biofilms
Tian C. Zhang,Paul L. Bishop +1 more
TL;DR: The densities, porosities, specific surface area, and mean pore radius of biofilm were determined and are helpful in obtaining a much clearer physical description of biofilms.
Dynamics of biofilm processes
TL;DR: In this article, the significance of biofilm development on various processes is summarized, including water distribution systems and heat transfer equipment, for example, biofilms can cause substantial energy losses resulting from increased fluid frictional resistance and increased heat transfer resistance.