Kinetics of Mn(II) oxygenation by manganese oxide surfaces at a pH around 8 in solution.

DOI

Bibliographic Information

Other Title
  • マンガン酸化鉱物の表面でのマンガン(II)イオンの酸化反応速度―pH=8付近の水溶液中で

Description

Mn oxides, among the strongest common chemical oxidants except oxygen, play an important role in the environmental cycles. For measurement of Mn(II) oxidation and sorption reaction on the surface of six manganese oxide minerals (cryptomelane, todorokite, vernadite, hausmannite, Na-birnessite, Na-buserite), the rates of Mn(II) removal from aerated solutions (0.01 mM of initial [Mn]; 50mM of NaCl; 2mM of Hepes buffer) in 1-L brown bottles were monitored over a pH range from 7.6 to 8.2 for five days after manganese oxide addition (2.0 mg) at room temperature. The Mn(II) oxidation rate on the surface of these minerals was proportional to [OH-] to the power of 0.38-0.59 in the pH range.

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Details 詳細情報について

  • CRID
    1390001205738156288
  • NII Article ID
    130004594052
  • DOI
    10.14862/geochemproc.60.0.285.0
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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