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Simulation of competition between two microorganisms in a biofilm reactor based on different growth models

Khoyi, M. R ; Sharif University of Technology | 2005

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  1. Type of Document: Article
  2. DOI: 10.1016/j.bej.2004.10.011
  3. Publisher: 2005
  4. Abstract:
  5. A simple biofilm model based on a model suggested by Soda et al. [S. Soda, E. Heinzle, M. Fujita, Modeling and simulation of competition between two microorganisms for a single inhibitory substrate in a biofilm reactor, Biotechnol. Bioeng. 66 (1999) 258-264] was used to simulate the competition between two microorganisms for space and a single inhibitory substrate in a biofilm reactor. Different growth kinetics were used to describe the growth of two microorganisms A and B which utilize the inhibitory substrate and the effect of biofilm thickness on microorganism concentration in biofilm was discussed. It was assumed that the biofilm has a uniform thickness and is composed of N segments (N = 4-10). The qualitative behavior of the biofilm reactor is characterized by four regions, I-IV, depending on the substrate concentration in feed, dilution rate, and growth kinetics. In region I, both microorganisms are washed out of the biofilm reactor. In region II, microorganism B is washed out of the biofilm and in region III microorganism A is washed out. In region IV both microorganism coexist with one another. © 2004 Elsevier B.V. All rights reserved
  6. Keywords:
  7. Biofilm models ; Biofilm reactors ; Dilution rates ; Single inhibitor substrates ; Growth kinetics ; Microorganisms ; Substrates ; Bioreactors ; Biofilm reactor ; Dilution ; Growth ; Mathematical computing ; Mathematical model ; Microorganism ; Priority journal ; Qualitative analysis ; Simulation ; Thickness
  8. Source: Biochemical Engineering Journal ; Volume 23, Issue 1 , 2005 , Pages 63-72 ; 1369703X (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S1369703X04002700