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This article in SSSAJ

  1. Vol. 33 No. 5, p. 711-715
    Received: Jan 22, 1969
    Accepted: June 6, 1969

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Reduction of Sulfate to Sulfide in Waterlogged Soil1

  1. W. E. Connell and
  2. W. H. Patrick2



A study was made of sulfate reduction to sulfide in water-logged soils supplied with an energy source. Sulfate reduction was more rapid in surface soil than in subsurface layers with sulfide appearing 2 days after waterlogging samples of a surface soil. The amount of sulfide precipitated from added H2S in two soils was approximately equivalent to the amounts of ferrous iron released by waterlogging. Added Fe2O3 was effective in precipitating H2S. Sulfate reduction was retarded by nitrate. Addition of oxygen to highly reduced soils caused a rapid decrease in sulfide content, with one-half of the sulfide being oxidized in 15 minutes and all the sulfide oxidized after 8 hours.

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