Dynamic growth rates of microbial populations in activated sludge systems

Peter G. Stroot, Pascal E. Saikaly, Daniel B. Oerther*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Results of mathematical modeling and whole cell 16S ribosomal RNA-targeted fluorescence in situ hybridizations challenge the widely held perception that microbial populations in "steady-state" activated sludge systems share a common net growth rate that is proportional to the inverse of the mean cell residence time. Our results are significant because they encourage bioprocess engineers to appreciate the differences in growth physiology among individual microbial populations in complex mixed microbial communities such as suspended growth activated sludge bioreactor systems. Journal of Environmental Engineering

Original languageEnglish (US)
Pages (from-to)1698-1705
Number of pages8
JournalJournal of Environmental Engineering
Issue number12
StatePublished - Dec 2005
Externally publishedYes


  • Activated sludge
  • Biological treatment
  • Biomass
  • Ecology
  • Microbes

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Civil and Structural Engineering
  • General Environmental Science


Dive into the research topics of 'Dynamic growth rates of microbial populations in activated sludge systems'. Together they form a unique fingerprint.

Cite this