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Retention and Transport of Sulfate in a Slightly Acid Forest Soil
Author(s) -
Weaver G. T.,
Khanna P. K.,
Beese F.
Publication year - 1985
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/sssaj1985.03615995004900030042x
Subject(s) - sulfate , adsorption , chemistry , desorption , freundlich equation , percolation (cognitive psychology) , salt (chemistry) , soil water , environmental chemistry , mineralogy , soil science , geology , organic chemistry , neuroscience , biology
A shallow slightly acid Terra fusca (Rendolls) soil derived from triassic limestone contains substantial amounts of sulfate. Under high sulfate input, low pH and high salt input this soil can further retain sulfate. Soil chemical data indicate that this soil contains exchangeable Al and H. This finding and the analysis of the equilibrium soil solutions from batch and percolation studies indicate that the retention of sulfate can be described by an equilibrium solid/solution phase of the type Al(OH)SO 4 (aluminum hydroxy sulfate). Under similar experimental conditions of solution composition and concentration, Freundlich type adsorption/desorption isotherms and the general solute transport equation can describe the retention and transport of sulfate in this soil.