Formation of a dynamic membrane altered the microbial community and metabolic flux in fermentative hydrogen production

Jong Hun Park, Jeong Hoon Park, Young Bo Sim, Sang Hyoun Kim, Hee-Deung Park

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This study aimed to investigate the relationship among dynamic membrane (DM) formation, metabolic flux, and microbial community population in dark fermentative hydrogen production. A continuously stirred tank reactor was equipped with an external submerged polyester screen mesh and inoculated with heat-treated anaerobic sludge without immobilization. DM was successfully developed on the polyester mesh and provided high-rate hydrogen production at 60.5 L H 2 /L.d and 2.39 mol H 2 /mol glucose added . DM formation was along with tightly bound extracellular polymeric substances. Flux balance analysis revealed that formation of DM altered the metabolic pathways for acetic acid production from homoacetogenesis to hydrogenesis. Bacterial community analysis suggested that Sporolactobacillaceae would contributed to this metabolic pathway shift. Nevertheless, lactic acid was not accumulated and assumed to be consumed by hydrogen producers including Clostridia.

Original languageEnglish
Pages (from-to)63-68
Number of pages6
JournalBioresource Technology
DOIs
Publication statusPublished - 2019 Jun 1

Keywords

  • Biofilm
  • Dynamic membrane
  • Flux balance analysis
  • High-rate bio-H
  • Sporolactobacillaceae

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

Fingerprint Dive into the research topics of 'Formation of a dynamic membrane altered the microbial community and metabolic flux in fermentative hydrogen production'. Together they form a unique fingerprint.

  • Cite this