Biological Oxidation of Arsenite by Bacteria Isolated from Activated Sludge
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- Anderson ANDRIANISA Harinaivo
- Dept. of Civil and Environmental E1ngineering, Iwate University
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- ITO Ayumi
- Dept. of Frontier Materials and Function Engineering, Graduate School of Engineering, Iwate University
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- MIURA Jun-ichi
- Dept. of Civil and Environmental Engineering, Graduate School of Engineering, Iwate University
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- AIZAWA Jiro
- Technical Devision, Iwate University
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- UMITA Teruyuki
- Dept. of Civil and Environmental E1ngineering, Iwate University
Bibliographic Information
- Other Title
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- 活性汚泥から分離した細菌による亜ヒ酸の生物学的酸化に関する基礎的研究
Abstract
In this study, the isolation of arsenite oxidising bacteria from activated sludge was investigated through subculture using the mineral medium contaning high concentration of arsenite. Arsenite was biologically oxidised to arsenate by bacteria in the activated sludge and two kinds of bacteria were isolated. One of the bacterium isolated from the activated sludge could grow by oxidising arsenite and was most closely related to Ensifer adhaerens (homology: 99.9%). The other could not oxidize arsenite and was related to Microbacterium keratanolyticum (homology: 99.5%). The oxidation rate of arsenite by the isolated arsenite oxidising bacteria followed the Michaelis-Menten's model and the maximum reaction rate and the Michaelis constant were 1.74 × 10-9μg/cell/min and 415μg/L, respectively. Furthermore, the coexistence of lactate as an organic carbon source accelerated the oxidation rate of arsenite by the bacteria.<BR>It was concluded that the arsenite oxidising bacterium isolated in this study can be utilized for the remediation of groundwater and wastewater contaminated with arsenite.
Journal
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- ENVIRONMENTAL ENGINEERING RESEARCH
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ENVIRONMENTAL ENGINEERING RESEARCH 45 219-224, 2008
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390001204112240128
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- NII Article ID
- 130003949596
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- ISSN
- 1884829X
- 13415115
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed