A novel way to utilize hydrogen and carbon dioxide in acidogenic reactor through homoacetogenesis

Bing Hua Yan, Ammaiyappan Selvam, Su Yun Xu, Jonathan W C WONG*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

This study investigated the potential of Acetobacterium woodii, a homoacetogen, in co-culture with common acetogens for acetate production during glucose fermentation. Three types of inocula, A. woodii (AW), heat-treated sludge (HTS) and co-culture of A. woodii and heat-treated sludge (AW-HTS) were investigated. Results showed that ~150. mM of glucose was almost completely converted to biomass, gases and other products in co-culture. The addition of A. woodii induced homoacetogenic fermentation in AW-HTS during the first 3. days, as evidenced by the decreased hydrogen production and acetate dominance (>90%, corresponding to 1.19. mol. acetate/mol. glucose) in total soluble products. However, due to the unfavorable environmental conditions, metabolic pathway in AW-HTS treatment shifted towards butyrate type at the end of the experiment. Bacterial diversity analysis indicated that species supporting growth of A. woodii were dominant during the first several days and their abundance gradually decreased until the end of experiment.

Original languageEnglish
Pages (from-to)249-257
Number of pages9
JournalBioresource Technology
Volume159
DOIs
Publication statusPublished - May 2014

Scopus Subject Areas

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

User-Defined Keywords

  • Acetate production
  • Acetobacterium woodii
  • Heat-treated sludge
  • Syntrophic co-culture

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