Population dynamics of methanogenic biofilm consortium during a start-up period of anaerobic fluidized bed reactor

N. Araki, H. Harada

研究成果: Conference article査読

12 被引用数 (Scopus)

抄録

The changes in physical properties and microbial activities were investigated during initial biofilm formation in lab-scale anaerobic fluidized bed reactors. Four different upflow velocities, i.e., 4, 7, 14 and 25 m.hr-1 were applied to four respective reactors of an equal size. The upflow velocities caused a prominent difference in the pattern of initial biofilm formation. The biofilm thickness attained eventually approximately 100 μm after 100 days of operation, independent of upflow velocity. On the contrary the biofilm density varied from 4.4 to 24.1 mg.VSS.cm-3 with an increase in the upflow velocity imposed. The activity of acetoclastic methane production increased remarkably 15 to 30 fold of seed sludge, regardless of upflow velocity. Microbial activities with respect to acetate production, H2-utilizing methanogenesis and acetate-utilizing methanogenesis increased finally up to 3-4 times as large as those of suspended grown sludge in a chemostat.

本文言語English
ページ(範囲)361-368
ページ数8
ジャーナルWater Science and Technology
29
10-11
DOI
出版ステータスPublished - 1994
イベントProceedings of the IAWQ 2nd International Specialized Conference on Biofilm Reactors - Paris, Fr
継続期間: 1993 9月 291993 10月 1

ASJC Scopus subject areas

  • 環境工学
  • 水の科学と技術

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