1988 Fiscal Year Final Research Report Summary
Study on Upgrading of Two-Phase-Anaerobic Digestion Process by Fluidized Bed and Acceleration of Biofilm Formation
| Project/Area Number |
62550396
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
都市工学・衛生工学
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| Research Institution | TOHOKU UNIVERSITY |
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Principal Investigator |
NOIKE Tatsuya Tohoku University, 工学部, 教授 (90005398)
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| Co-Investigator(Kenkyū-buntansha) |
YOU-YU LI Tohoku University, 工学部, 助手 (30201106)
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| Project Period (FY) |
1987 – 1988
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| Keywords | Anaerobic two pase digestion / Anaerobic fluidized bed / Methanogenic phase / Substrate removal rate / characteristic |
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| Research Abstract |
The effects of substrate composition on the characteristics of substrate removal and biofilm formation in methanogenic phase of anaerobic two phase digestion were investigated by using laboratory-scale anaerobic fluidized bed reactor with packed media of activated carbon. Three kinds of substrates were used. The first one was composed of acetic acid, propionic acid and butyric acid. A small amount of yeast extract or glucose was added to the second and third ones, respectively. In the experiments in which yeast extract of glucose was added to the mixed acid substrates, the substrate removal efficiencies were higher than that in the experiment using acetic acid substrate. The biofilm formation was accelerated by using the mixed substrate to which yeast extract was added.
The mechanism of attachement of anaerobic bacteria to packed media was studied by the observation on the seperative condition of bacteria after n-hexadecane was added to the cultures.
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