Fundamental study on the removal of Mn2+ in acid mine drainage using sulfate reducing bacteria

Kyoungkeun Yoo, Keiko Sasaki, Naoki Hiroyoshi, Masami Tsunekawa

研究成果: ジャーナルへの寄稿記事

10 引用 (Scopus)

抄録

The optimum conditions for Mn2+ removal from acid mine drainage was studied by a SRB (sulfate reducing bacteria) bioreactor. Chemical experiments with Na2S as a S2- source were conducted to investigate the effects of pH, coexisting metal ions, and the components in a growth medium for SRB on MnS formation from Mn2+ solutions. The amount of Mn removed from the Mn2+ solutions decreased with decreasing pH. The Zn2+ or Fe2+ coexisting in the solutions consumed S2- by forming ZnS or FeS, and this inhibited Mn removal. Sodium citrate, a component of the growth medium for SRB, formed a complex with Mn2+ and suppressed MnS formation. Biological experiments using the SRB reactor were carried out at 37°C and it was confirmed that the Mn2+ concentration decreased to less than 10 g.m-3 from 100g.m-3 at neutral pHs (pH 5-7) after 100 hours when other metal ions and sodium citrate were absent. The formed precipitate was identified to be metastable γ-MnS with a band gap of about 3.8 eV by XRD, XRF, and UV-VIS.

元の言語英語
ページ(範囲)2422-2428
ページ数7
ジャーナルMaterials Transactions
45
発行部数7
DOI
出版物ステータス出版済み - 7 2004

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drainage
bacteria
Sulfates
Drainage
sulfates
Bacteria
acids
Acids
citrates
Metal ions
metal ions
Sodium
sodium
bioreactors
Bioreactors
Precipitates
precipitates
Energy gap
Experiments
reactors

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

これを引用

Fundamental study on the removal of Mn2+ in acid mine drainage using sulfate reducing bacteria. / Yoo, Kyoungkeun; Sasaki, Keiko; Hiroyoshi, Naoki; Tsunekawa, Masami.

:: Materials Transactions, 巻 45, 番号 7, 07.2004, p. 2422-2428.

研究成果: ジャーナルへの寄稿記事

Yoo, Kyoungkeun ; Sasaki, Keiko ; Hiroyoshi, Naoki ; Tsunekawa, Masami. / Fundamental study on the removal of Mn2+ in acid mine drainage using sulfate reducing bacteria. :: Materials Transactions. 2004 ; 巻 45, 番号 7. pp. 2422-2428.
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