Extracellular Polymers in Relation to Settiling Properties of Activated Sludge
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概要
- 論文の詳細を見る
The effects of cetyltrimethylammonium bromide (CTAB) and acid on the settling properties of activated sludge samples from various sources were investigated. The addition of CTAB or acid to mixed liquor resulted in an increase of zone settling velocity (ZSV) and a reduction of 30-min settled sludge volume (SV_<30>). The higher the amount of extracellular polymers (ECPs) extracted from activated sludge, the higher the effectiveness. The amount of cetyltrimethylammonium ion (CTA^+) adsorbed by activated sludge was decreased by the extraction of ECPs and the extracted ECPs precipitated on addition of CTAB. These results indicated that the adsorption sites for CTA^+ are acidic functional groups in the ECPs. The Langmuir adsorption isotherm was employed successfully to decribe the adsorption of CTA^+ by activated sludge. The equilibrium constants (K) for complexes formed between CTA^+ and the adsorption sites of activated sludge ranged from 10^<5.1> to 10^<6.0>.
- 社団法人日本生物工学会の論文
- 1989-11-25
著者
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SHIMIZU Tokuo
Department of Applied Chemistry, Faculty of Engineering, Utsunomiya University
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SHIRAKASHI Takashi
Department of Applied Chemistry, Faculty of Engineering, Utsunomiya University
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Shirakashi Takashi
Department Of Applied Chemistry Faculty Of Engineering Utsunomiya University
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KAKII KAZUO
Department of Applied Chemistry, Faculty of Engineering, Utsunomiya University
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KURIYAMA MITSUO
Department of Applied Chemistry, Faculty of Engineering, Utsunomiya University
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NAKATANI KUNIHIKO
Shinohara Water Treatment Co. Ltd.,
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Shimizu T
Hakodate National Coll. Technol. Hakodate
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Kuriyama Mitsuo
Department Of Applied Chemistry Faculty Of Engineering Utsunomiya University
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Kakii K
Department Of Applied Chemistry Faculty Of Engineering Utsunomiya University
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Kakii Kazuo
Department Of Applied Chemistry Faculty Of Engineering Utsunomiya University
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Kuriyama M
Utsunomiya Univ. Utsunomiya Jpn
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Nakatani Kunihiko
Shinohara Water Treatment Co. Ltd.
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