Continuous biohydrogen production from liquid swine manure supplemented with glucose using an anaerobic sequencing batch reactor

Xiao Wu, Jun Zhu, Chunying Dong, Curt Miller, Yecong Li, Liang Wang, Wanying Yao

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

Liquid swine manure supplemented with glucose (10 g/L) was used as substrate for hydrogen production using an anaerobic sequencing batch reactor at 37 ± 1 °C and pH 5.0 under different hydraulic retention times (HRTs). Decreasing HRT from 24 to 8 h caused an increasing hydrogen production rate from 0.05 to 0.15 L/h/L. Production rates of both total biogas and hydrogen were linearly correlated to HRT with R2 being 0.993 and 0.997, respectively. The hydrogen yield ranged between 1.18 and 1.63 mol-H2/mol glucose and the 12 h HRT was preferred for high production rate and efficient yield. For all the five HRTs examined, the glucose utilization efficiency was over 98%. The biogas mainly consisted of carbon dioxide and hydrogen (up to 43%) with no methane detected throughout the experiment. Ethanol and organic acids were the major aqueous metabolites produced during fermentation, with acetic acid accounting for 56-58%. The hydrogen yield was found to be related to the acetate/butyrate ratio.

Original languageEnglish (US)
Pages (from-to)6636-6645
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume34
Issue number16
DOIs
StatePublished - Aug 2009

Keywords

  • Dark fermentation
  • Hydraulic retention time (HRT)
  • Hydrogen production rate
  • Hydrogen yield
  • Liquid swine manure
  • Sludge granulation

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