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单词 Feammox
释义
Feammox

Geology and Earth Sciences
  • A process by which anaerobic bacteria oxidize ammonium (NH4) that is coupled to ferric iron (Fe(III)), which is reduced, to produce dinitrogen (N2) and nitrite (NO2); the NO2 may subsequently be reduced to N2, nitrate (NO3), or NH4:

    3Fe(OH)3+ 5H++ NH4+3Fe2++ 9H2O + 0.5N2

    or, at pH below 6.5:

    6Fe(OH)3+ 10H++ NH4+6Fe2++ 16H2O + NO2

    The process occurs in tropical soils, where it shortcuts the nitrogen cycle, leading to the loss of nitrogen from ecosystems. See also anammox.


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