Simultaneous denitrification and methanogenesis (SDM): Review of two decades of research

M. Andalib, G. Nakhla, E. McIntee, J. Zhu

Research output: Journal PublicationReview articlepeer-review

62 Citations (Scopus)


There has been a considerable effort to accomplish simultaneous denitrification and methanogenesis (SMD) in a single bioreactor since the late 80s. SDM is thermodynamically and kinetically a very complicated process. This literature review shows that the influence of various operational parameters resulted in various performances of either denitrification or methanogenesis. Each published report or paper in this regard focuses on a specific cause and effect such as: the effect of C/N ratio, type of substrate, oxidation reduction potential, inhibitory effect of nitrogen oxides and the nitrogen cycle in SDM processes. Therefore, a thorough literature review seemed necessary to compare all the reports and results in a global manner to identify the major causes of inhibition and feasibility of integrating denitrification and methanogenic processes by comparing the operational conditions of different proposed systems that target SDM as well as experimental data that were designed to reveal the science behind this process.

Original languageEnglish
Pages (from-to)1-14
Number of pages14
Issue number1-3
Publication statusPublished - 15 Sept 2011
Externally publishedYes


  • Denitrification
  • Inhibition
  • Methanogenesis
  • Simultaneous

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • General Materials Science
  • Water Science and Technology
  • Mechanical Engineering


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