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Phosphorus Movement in Soils: Soil‐Orthophosphate Reaction Kinetics
Author(s) -
Novak L. T.,
Adriano D. C.
Publication year - 1975
Publication title -
journal of environmental quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 171
eISSN - 1537-2537
pISSN - 0047-2425
DOI - 10.2134/jeq1975.00472425000400020028x
Subject(s) - kinetics , langmuir , soil water , adsorption , chemistry , desorption , mass transfer , langmuir adsorption model , phosphorus , environmental chemistry , soil science , chromatography , environmental science , organic chemistry , quantum mechanics , physics
This paper presents four models to describe the kinetics of P adsorption‐desorption reactions in soils. The mass transfer model, Langmuir kinetics model, and Langmuir‐Hinshelwood models were developed and compared with phosphate adsorption data on a soil obtained by batch‐shaken flask experiments. For P adsorption times up to 3 hours, the mass transfer and Langmuir kinetics models described the experimental data very well. The Langmuir kinetics model gave a slightly better fit of the experimental data. These kinetic data probably represent an upper bound for unsaturated flow in soils.