Properties of Extracellular Polymer Having an Effect on Expression of Activated Sludge
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概要
- 論文の詳細を見る
Extracellular polymer in activated sludge was found to affect expression of these sludge by raising the value of the average specific resistance (α_<av>) during filtration and lowering the value of the modified consolidation coefficient (C_e) during consolidation. Further, the addition of extracellular polymer to the sludges caused higher values of α_<av> and lower values of C_e. The logarithmic plots of α_<av> and C_e against the quantity of extracellular polymer was linear. When these two values (α_<av> and C_e) of each activated sludge were plotted against the quantity of extracellular polymer extracted from each sludge, they were correlated by a single straight line with two exceptions. These were the return sludge of a textile factory and the anaerobically digested sludge of a sewage treatment plant. These exceptions indicate that the values of α_<av> of these sludges are higher than those of other sludges containing the same amount of extracellular polymer and that of C_e are lower than those of other sludges. It was confirmed that the extracellular polymer of these two sludges contains a lot of polysaccharides of the molecular weight 600-100,000 (with a standard of polyethylane glycol) by gel chromatography. The effects of the flocculant on dewatering were investigated. The effects of the cationic polymer flocculant addition to the extracellular polymer were analyzed using an ultrafiltration cell (molecular weight cut-off 10,000). The ultrafiltration rate of extracellular polymer was much improved by adding a cationic polymer flocculant. The removal of extracellular polymer by adding cationic polymer flocculant was ascertained by measuring the molecular weight distribution of the polysaccharides. On the other hand, no flocculations of extracellular polymer and sludge by adding anionic and nonionic polymer flocculant could be observed.
- 社団法人日本生物工学会の論文
- 1990-02-25
著者
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Kishimoto Michimasa
Department of Chemistry and Materials Technology, Kyoto Institute of Technology
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SHIOYA SUTEAKI
Department of Biotechnology, Graduate School of Engineering, Osaka University
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YOSHIDA Toshiomi
International Center for Biotechnology, Osaka University
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Yoshida Toshiomi
International Center For Biotechnology Osaka University
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吉田 豊和
岐阜大・工・生命工
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Suzuki Shingo
Department Of Bioinformatic Engineering Graduate School Of Information Science And Technology Osaka
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Yoshida T
Division Of Material And Biological Graduate School Japan Women's University
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SUGA KEN-ICHI
Department of Biotechnology, Faculty of Engineering, Osaka University
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Suzuki Shingo
Technology Osaka University
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Suga K
Osaka Univ. Osaka Jpn
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Suga K
Osaka Univ. Osaka
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Suga Ken-ichi
Department Of Biological Science And Technology Science University Of Tokyo
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Kishimoto Michimasa
Department Of Biological Science Technology Scientific University Of Tokyo
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Kishimoto Mishimasa
Department Of Biological Science And Technology Science University Of Tokyo
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Kishimoto Michimasa
Department Of Biotechnology Faculty Of Engineering Osaka University
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Kishimoto Michimasa
Deparmtnet Of Biotechnology Osaka University
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Kang Sang-mo
Department Of Fermentation Technology Faculty Of Engineering Osaka University
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Shioya S
Department Of Biotechnology Graduate School Of Engineering Osaka University
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Shioya Suteaki
Department Of Biotechnology Graduate School Of Engineering Osaka University:(present Office)departme
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Shioya Suteaki
Department Of Biotechnology Faculty Of Engineering Osaka University
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Shioya Suteaki
Department Of Fermentation Technology Osaka University
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Kishimoto Michimasa
International Center Of Cooperative Research In Biotechnology Japan Osaka University
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Yoshida Toshiomi
Internatioal Center For Biotechnology Osaka University
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吉田 豊和
岐阜大 工
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