A 2D cellular automaton biofilm detachment algorithm
Ημερομηνία
2012Λέξη-κλειδί
Επιτομή
A cellular-automaton based two-dimensional biofilm detachment module is developed. The module is an improvement of previously presented methodologies for modeling biofilm detachment under the influence of hydrodynamic forces of the moving fluid in which biofilm develops. It uses biofilm mechanical properties that are variable in time and space and are determined by the percentage of each biofilm solid substanceactive biomass, extracellular polymeric substance (EPS) and residual dead biomassand pores that are contained in each cellular automaton compartment in the biofilm column. A methodology is presented that estimates wall shear stresses applied on the biofilm by the fluid for different hydrodynamic conditions and an association with the biofilm mechanical properties is created to predict its detachment. The module is applied in samples created by the UMCCA model [Laspidou and Rittmann, Water Res 38 (2004), 3362-3372]. © 2012 Springer-Verlag Berlin Heidelberg.
Collections
Related items
Showing items related by title, author, creator and subject.
-
Erosion probability for biofilm modeling: analysis of trends
Laspidou, C. S. (2014)This study presents the strengths and weaknesses of a biofilm erosion probability algorithm that can be used in cellular automaton and individual-based biofilm simulation models. The erosion probability is calculated using ... -
On the calculation of the elastic modulus of a biofilm streamer
Aravas, N.; Laspidou, C. S. (2008)Biofilm mechanical properties are essential in quantifying the rate of microbial detachment, a key process in determining the function and structure of biofilm systems. Although properties such as biofilm elastic moduli, ... -
Advances in mathematical modelling of biofilm structures
Laspidou, C. S.; Kungolos, A.; Samaras, P. (2007)Biofilms are found everywhere in natural waters forming complex microbial communities, playing an important role in ecosystem processes in streams and lakes and making their characterization a major research question. ...