Extension of anaerobic digestion model no. 1 with the processes of sulphate reduction

V. Fedorovich, P.N.L. Lens, S. Kalyuzhnyi

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82 Citations (Scopus)


In the present work, the Anaerobic Digestion Model No. 1 (ADM1) for computer simulation of anaerobic processes was extended to the processes of sulfate reduction. The upgrade maintained the structure of ADM1 and included additional blocks describing sulfate-reducing processes (multiple reaction stoichiometry, microbial growth kinetics, conventional material balances for ideally mixed reactor, liquid-gas interactions, and liquid-phase equilibrium chemistry). The extended model was applied to describe a longterm experiment on sulfate reduction in a volatile fatty acid-fed upflow anaerobic sludge bed reactor and was generally able to predict the outcome of competition among acetogenic bacteria, methanogenic archaea, and sulfate- reducing bacteria for these substrates. The computer simulations also showed that when the upward liquid velocity in the reactor exceeds 1 m/d, the structure of the sludge becomes essential owing to bacterial detachment.
Original languageEnglish
Pages (from-to)33-46
JournalApplied Biochemistry and Biotechnology
Issue number1-3
Publication statusPublished - 2003


  • granular sludge reactor
  • uasb reactor
  • methanogenesis
  • verification
  • competition
  • inhibition
  • velocity
  • hydrogen
  • biomass
  • glucose

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