Advanced search
1 file | 286.32 KB

Considering microbial and aggregate heterogeneity in biofilm reactor models : how far do we need to go?

(2015) WATER SCIENCE AND TECHNOLOGY. 72(10). p.1692-1699
Author
Organization
Abstract
A model describing a given system should be as simple as possible – but not simpler. The appropriate level of complexity depends both on the type of system and on the intended use of the model. This paper addresses the critical question of which purposes justify increased complexity of biofilm (reactor) models. Additional model features compared to conventional models considered are: (1) the inclusion of microbial diversity, distinguishing between different species performing the same function; and (2) the distinction between flocs and granules in putatively granular sludge reactors. With a multispecies model considering interspecies diversity, it was demonstrated that a given macroscopic reactor performance does not necessarily reflect steady state conditions on the microscale. In a second case study, it was shown that the addition of a small level of flocs can have a significant impact on macroscale process performance and on microbial population and activity distributions in granular sludge reactors. It was concluded that increased complexity in biofilm models, concerning microbial diversity or mesoscale aggregate architecture, is likely more useful when the focus is on understanding fundamental microscale outputs, but under specific conditions, these additional model features can be critically informative for bulk reactor behavior prediction and general understanding.
Keywords
population dynamics, Switzerland, microbial coexistence, granules, flocs, biofilm reactors, biological nitrogen conversion, GRANULAR SLUDGE REACTOR, WATER TREATMENT PLANTS, WASTE-WATER, NITRIFYING BACTERIA, AMMONIA OXIDATION, ANAMMOX BACTERIA, POPULATIONS, NITRITATION, PERFORMANCE, SHIFTS

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 286.32 KB

Citation

Please use this url to cite or link to this publication:

Chicago
Vannecke, Thomas, George Wells, Nathalie Hubaux, Eberhard Morgenroth, and Eveline Volcke. 2015. “Considering Microbial and Aggregate Heterogeneity in Biofilm Reactor Models : How Far Do We Need to Go?” Water Science and Technology 72 (10): 1692–1699.
APA
Vannecke, T., Wells, G., Hubaux, N., Morgenroth, E., & Volcke, E. (2015). Considering microbial and aggregate heterogeneity in biofilm reactor models : how far do we need to go? WATER SCIENCE AND TECHNOLOGY, 72(10), 1692–1699.
Vancouver
1.
Vannecke T, Wells G, Hubaux N, Morgenroth E, Volcke E. Considering microbial and aggregate heterogeneity in biofilm reactor models : how far do we need to go? WATER SCIENCE AND TECHNOLOGY. 2015;72(10):1692–9.
MLA
Vannecke, Thomas, George Wells, Nathalie Hubaux, et al. “Considering Microbial and Aggregate Heterogeneity in Biofilm Reactor Models : How Far Do We Need to Go?” WATER SCIENCE AND TECHNOLOGY 72.10 (2015): 1692–1699. Print.
@article{6977481,
  abstract     = {A model describing a given system should be as simple as possible -- but not simpler. The appropriate level of complexity depends both on the type of system and on the intended use of the model. This paper addresses the critical question of which purposes justify increased complexity of biofilm (reactor) models. Additional model features compared to conventional models considered are: (1) the inclusion of microbial diversity, distinguishing between different species performing the same function; and (2) the distinction between flocs and granules in putatively granular sludge reactors.
With a multispecies model considering interspecies diversity, it was demonstrated that a given macroscopic reactor performance does not necessarily reflect steady state conditions on the microscale. In a second case study, it was shown that the addition of a small level of flocs can have a significant impact on macroscale process performance and on microbial population and activity distributions in granular sludge reactors. It was concluded that increased complexity in biofilm models, concerning microbial diversity or mesoscale aggregate architecture, is likely more useful when the focus is on understanding fundamental microscale outputs, but under specific conditions, these additional model features can be critically informative for bulk reactor behavior prediction and general understanding.},
  author       = {Vannecke, Thomas and  Wells, George and  Hubaux, Nathalie and  Morgenroth, Eberhard and Volcke, Eveline},
  issn         = {0273-1223},
  journal      = {WATER SCIENCE AND TECHNOLOGY},
  language     = {eng},
  number       = {10},
  pages        = {1692--1699},
  title        = {Considering microbial and aggregate heterogeneity in biofilm reactor models : how far do we need to go?},
  url          = {http://dx.doi.org/10.2166/wst.2015.389},
  volume       = {72},
  year         = {2015},
}

Altmetric
View in Altmetric
Web of Science
Times cited: