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

• Anderson ANDRIANISA Harinaivo

  Dept. of Civil and Environmental E1ngineering, Iwate University

• 伊藤 歩

  岩手大学大学院工学研究科フロンティア材料機能工学専攻

• 三浦 洵一

  岩手大学大学院工学研究科建設環境工学専攻

• 相澤 治郎

  岩手大学技術部

• 海田 輝之

  岩手大学工学部建設環境工学

書誌事項

タイトル別名

• Biological Oxidation of Arsenite by Bacteria Isolated from Activated Sludge

抄録

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.

収録刊行物

• 環境工学研究論文集

  環境工学研究論文集 45 219-224, 2008

  公益社団法人 土木学会

キーワード

• activated sludge
• arsenic oxidising bacteria
• phylogenetic analysis
• oxidation rate

詳細情報

• CRID: 1390001204112240128
• NII論文ID: 130003949596
• DOI: 10.11532/proes1992.45.219
• ISSN: 1884829X
• ISSN: 13415115
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可