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Reduction of Sulfate to Sulfide in Waterlogged Soil
Author(s) -
Connell W. E.,
Patrick W. H.
Publication year - 1969
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1969.03615995003300050026x
Subject(s) - sulfide , sulfate , ferrous , soil water , chemistry , waterlogging (archaeology) , hydrogen sulfide , nitrate , environmental chemistry , inorganic chemistry , sulfur , soil science , environmental science , ecology , organic chemistry , wetland , biology
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 H 2 S in two soils was approximately equivalent to the amounts of ferrous iron released by waterlogging. Added Fe 2 O 3 was effective in precipitating H 2 S. 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.