Bacterial community analysis in upflow multilayer anaerobic reactor treating high-solids organic wastes

Si Kyung Cho, Kyung Won Jung, Dong Hoon Kim, Joong Chun Kwon, Umer Zeeshan Ijaz, Seung Gu Shin

Research output: Contribution to journalArticlepeer-review

Abstract

A novel anaerobic digestion configuration, the upflow multi-layer anaerobic reactor (UMAR), was developed to treat high-solids organic wastes. The UMAR was hypothesized to form multi-layer along depth due to the upflow plug flow; use of a recirculation system and a rotating distributor and baffles aimed to assist treating high-solids influent. The chemical oxygen demand (COD) removal efficiency and methane (CH4) production rate were 89% and 2.10 L CH4/L/d, respectively, at the peak influent COD concentration (110.4 g/L) and organic loading rate (7.5 g COD/L/d). The 454 pyrosequencing results clearly indicated heterogeneous distribution of bacterial communities at different vertical locations (upper, middle, and bottom) of the UMAR. Firmicutes was the dominant (>70%) phylum at the middle and bottom parts, while Deltaproteobacteria and Chloroflexi were only found in the upper part. Potential functions of the bacteria were discussed to speculate on their roles in the anaerobic performance of the UMAR system.

Original languageEnglish
Pages (from-to)1226-1234
Number of pages9
JournalBiotechnology Progress
Volume33
Issue number5
DOIs
StatePublished - 1 Sep 2017

Keywords

  • 16S rRNA gene
  • 454 pyrosequencing
  • anaerobic digestion
  • food waste leachate
  • plug flow

Fingerprint

Dive into the research topics of 'Bacterial community analysis in upflow multilayer anaerobic reactor treating high-solids organic wastes'. Together they form a unique fingerprint.

Cite this