Net methane oxidation performance of anaerobic sewage sludge

Taewoo Yi, Tae Gwan Kim, Eun Hee Lee, Jung Hee Lee, Kyung Suk Cho

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The anaerobic oxidation of methane (AOM) in anaerobic sewage sludge was characterized. The net methane oxidation was observed in samples amended with methane plus sulfate or with methane alone, whereas methane formation was observed in the samples without methane, indicating that methane oxidation and formation occurred simultaneously. The ratio of the net methane oxidation rate to H2S formation was 100:1, suggesting that the AOM was not closely associated with sulfate reduction in the anaerobic sludge. The net AOM was positively associated with the methane concentration and sludge dilution ratio. However, the rate of AOM was negatively correlated with organic substrate (acetate) concentration. Therefore, the production and oxidation of methane could be controlled by environmental conditions and dissolved organic compounds in the bulk solution.

Original languageEnglish
Pages (from-to)1452-1456
Number of pages5
JournalJournal of Microbiology and Biotechnology
Issue number10
StatePublished - Oct 2012


  • Acetate
  • Anaerobic oxidation
  • Anaerobic sludge
  • Methane
  • Sulfate reduction


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