Quantitative analysis of microbial community structure in two-phase anaerobic digesters treating food wastewater

Woong Kim, Byung Gon Ryu, Sungwhan Kim, Sung Woon Heo, Donghyun Kim, Jungmin Kim, Haechan Jo, Jong Hee Kwon, Ji Won Yang

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

An acidogenic reactor with a 0.5-L working volume and a methanogenic digester with a 5-L of working volume were operated for 150 days on a continuous mode to investigate the structure of a microbial community during food wastewater treatment. During the steady state of anaerobic digestion, volatile solids (VS) removal efficiency in the pilot plant was approximately 65%. The bacterial population was higher than any other methanogens detected during the entire anaerobic process and treatment of raw food wastewater. Methanomicrobiales (MMB), Methanosarcinales (MSL), and Methanobacteriales (MBT) were detected during digestion. The methanogenic population present in the acidogenic reactor was directly affected by the archaeal community in raw food wastewater. However, the shift of microbial community in the methanogenic digester was relatively gradual. The performance of methanogenic digester might be more related to the change of microbial metabolism affected by the physicochemical properties of the input substrate.

Original languageEnglish
Pages (from-to)381-385
Number of pages5
JournalKorean Journal of Chemical Engineering
Volume31
Issue number3
DOIs
StatePublished - Mar 2014

Keywords

  • Anaerobic Digestion
  • Food Wastewater
  • Methanobacteriales
  • Methanomicrobiales
  • Methanosarcinales

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