Particle-based multidimensional multispecies biofilm model. Export

@article{citeulike:1248582, abstract = {In this paper we describe a spatially multidimensional (two-dimensional [2-D] and three-dimensional [3-D]) particle-based approach for modeling the dynamics of multispecies biofilms growing on multiple substrates. The model is based on diffusion-reaction mass balances for chemical species coupled with microbial growth and spreading of biomass represented by hard spherical particles. Effectively, this is a scaled-up version of a previously proposed individual-based biofilm model. Predictions of this new particle-based model were quantitatively compared with those obtained with an established one-dimensional (1-D) multispecies model for equivalent problems. A nitrifying biofilm containing aerobic ammonium and nitrite oxidizers, anaerobic ammonium oxidizers, and inert biomass was chosen as an example. The 2-D and 3-D models generally gave the same results. If only the average flux of nutrients needs to be known, 2-D and 1-D models are very similar. However, the behavior of intermediates, which are produced and consumed in different locations within the biofilm, is better described in 2-D and 3-D models because of the multidirectional concentration gradients. The predictions of 2-D or 3-D models are also different from those of 1-D models for slowly growing or minority species in the biofilm. This aspect is related to the mechanism of biomass spreading or advection implemented in the models and should receive more attention in future experimental studies.}, address = {Department of Biochemical Engineering, Delft University of Technology, 2628 BC Delft, The Netherlands. C.Picioreanu@tnw.tudelft.nl}, author = {Picioreanu, C. and Kreft, J. U. and Van Loosdrecht, M. C.}, citeulike-article-id = {1248582}, citeulike-linkout-0 = {http://view.ncbi.nlm.nih.gov/pubmed/15128564}, citeulike-linkout-1 = {http://www.hubmed.org/display.cgi?uids=15128564}, issn = {0099-2240}, journal = {Appl Environ Microbiol}, keywords = {biofilms, ch3, model, multispecies, refs\_ox}, month = {May}, number = {5}, pages = {3024--3040}, posted-at = {2007-04-24 22:26:31}, priority = {2}, title = {Particle-based multidimensional multispecies biofilm model.}, url = {http://view.ncbi.nlm.nih.gov/pubmed/15128564}, volume = {70}, year = {2004} }

TY - JOUR ID - citeulike:1248582 L3 - citeulike-article-id:1248582 N2 - In this paper we describe a spatially multidimensional (two-dimensional [2-D] and three-dimensional [3-D]) particle-based approach for modeling the dynamics of multispecies biofilms growing on multiple substrates. The model is based on diffusion-reaction mass balances for chemical species coupled with microbial growth and spreading of biomass represented by hard spherical particles. Effectively, this is a scaled-up version of a previously proposed individual-based biofilm model. Predictions of this new particle-based model were quantitatively compared with those obtained with an established one-dimensional (1-D) multispecies model for equivalent problems. A nitrifying biofilm containing aerobic ammonium and nitrite oxidizers, anaerobic ammonium oxidizers, and inert biomass was chosen as an example. The 2-D and 3-D models generally gave the same results. If only the average flux of nutrients needs to be known, 2-D and 1-D models are very similar. However, the behavior of intermediates, which are produced and consumed in different locations within the biofilm, is better described in 2-D and 3-D models because of the multidirectional concentration gradients. The predictions of 2-D or 3-D models are also different from those of 1-D models for slowly growing or minority species in the biofilm. This aspect is related to the mechanism of biomass spreading or advection implemented in the models and should receive more attention in future experimental studies. IS - 5 JF - Appl Environ Microbiol SN - 0099-2240 AD - Department of Biochemical Engineering, Delft University of Technology, 2628 BC Delft, The Netherlands. C.Picioreanu@tnw.tudelft.nl EP - 3040 TI - Particle-based multidimensional multispecies biofilm model. VL - 70 SP - 3024 KW - biofilms KW - ch3 KW - model KW - multispecies KW - refs_ox AU - Picioreanu, C AU - Kreft, JU AU - Van Loosdrecht, MC PY - 2004/05// UR - http://view.ncbi.nlm.nih.gov/pubmed/15128564 ER -