Hydrogen production potentials and fermentative characteristics of various substrates with different heat-pretreated natural microflora

Yohei Akutsu, Dong Yeol Lee, Yu You Li, Tatsuya Noike

研究成果: Article査読

68 被引用数 (Scopus)

抄録

Batch tests were carried out to investigate the effects of heat-pretreated inocula on the fermentative hydrogen production characteristics of various types of substrates. A total of 8 different inocula and 4 different substrates (starch, glycerol, oil and peptone) were used. Heat pretreatment of the inocula was conducted in order to harvest spore-forming clostridial bacteria. Significant hydrogen production potentials were observed from starch (20.5-174.4 ml H2/g-CODstarch) and glycerol (11.5-38.1 ml H2/g-CODglycerol); however, almost no hydrogen was produced from oil and peptone. When starch was used as a substrate, two different fermentation patterns were observed, according to the inocula: butyric acid-type and ethanol-type fermentation. Polymerase chain reaction combined with denaturing gradient gel electrophoresis (PCR-DGGE) analysis was conducted to compare the bacterial structures cultivated on the starch medium. Different species of clostridial bacteria were observed between the butyric acid-type and ethanol-type fermentation cultures. When glycerol was used as a substrate, 1,3-propanediol was the main by-product with each inoculum. The results of the present study suggest that simultaneous production of ethanol or 1,3-propanediol in addition to hydrogen is a more promising strategy than conventional hydrogen production in acidogenesis.

本文言語English
ページ(範囲)5365-5372
ページ数8
ジャーナルInternational Journal of Hydrogen Energy
34
13
DOI
出版ステータスPublished - 2009 7

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • 燃料技術
  • 凝縮系物理学
  • エネルギー工学および電力技術

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