Phosphorus Movement in Soils: Soil-Orthophosphate Reaction Kinetics1
- L. T. Novak and
- D. C. Adriano2
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.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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