Phosphate Sorption by Soils: III. The P Diffusion-Precipitation Model Tested for Three Acid Sandy Soils1
- W. H. van Riemsdijk,
- A. M. A. van der Linden and
- L. J. M. Boumans2
A recently developed diffusion-precipitation model was tested for three acid sandy soils: two topsoils and one subsoil. It is shown that experimental data fit the model when constant P concentrations are used. As the model predicts no particular curve, third degree polynomials were used to describe the data. For further testing, increasing and decreasing P concentrations were used. Comparison of experimental and computer simulation data show that the model is also valid for varying concentrations. The concentration at the metal-oxide/metal-phosphate interface (indicated as C4) is relatively high: 0.1 to 0.25 mmol/L. The diffusion-precipitation model is useful in modeling P behavior in soils.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
Copyright © .