Modeling bisubstrate removal by biofilms

Eun Namkung, Bruce E. Rittmann

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


A bisubstrate secondary utilization model is based on the concept that an individual substrate can be utilized not only by the biomass by its utilization but also by the biomass made from the utilization of the other substrate. When substrate concentrations are low, a key factor is having sufficient substrate to initiate biofilm growth. Modeling results for three characteristic cases demonstrate that satisfying a total Smin concentration for a bisubstrate system is the necessary condition for initiating biofilm growth and simultaneous utilization of both substrates. Because having more than one substrate supporting biofilm growth enhances the removal of each compound, the utilization rate of a specific compound can be increased by the concentration of other compounds, and the total Smin concentration can be less than the weighted average of individual Smin values.

Original languageEnglish (US)
Pages (from-to)269-278
Number of pages10
JournalBiotechnology and bioengineering
Issue number2
StatePublished - Feb 5 1987
Externally publishedYes

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology


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