Enhancing methane production during the anaerobic digestion of crude glycerol using Japanese cedar charcoal

Ryoya Watanabe, Chika Tada, Yasunori Baba, Yasuhiro Fukuda, Yutaka Nakai

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

The use of Japanese cedar charcoal as a support material for microbial attachment could enhance methane production during anaerobic digestion of crude glycerol and wastewater sludge. Methane yield from a charcoal-containing reactor was approximately 1.6 times higher than that from a reactor without charcoal, and methane production was stable over 50days when the loading rate was 2.17g chemical oxygen demand (COD) L-1d-1. Examination of microbial communities on the charcoal revealed the presence of Uncultured Desulfovibrio sp. clone V29 and Pelobacter seleniigenes, known as 1,3-propandiol degraders. Hydrogenotrophic methanogens were also detected in the archaeal community on the charcoal. Methanosaeta, Methanoregula, and Methanocellus were present in the charcoal-containing reactor. The concentration of propionate in the charcoal-containing reactor was also lower than that in the control reactor. These results suggest that propionate degradation was enhanced by the consumption of hydrogen by hydrogenotrophic methanogens on the charcoal.

Original languageEnglish
Pages (from-to)387-392
Number of pages6
JournalBioresource Technology
Volume150
DOIs
Publication statusPublished - 2013 Dec

Keywords

  • Anaerobic digestion
  • Charcoal
  • Glycerol
  • Methane
  • Microbial community

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Enhancing methane production during the anaerobic digestion of crude glycerol using Japanese cedar charcoal'. Together they form a unique fingerprint.

Cite this