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- Title
Study of phosphate sorption on rendzina soil by heterogeneous isotopic exchange: a biexponential kinetic model.
- Authors
Vörös, János Z.; Kónya, József; Nagy, Noémi M.
- Abstract
Phosphate sorption on rendzina soil was studied by P-32 heterogeneous isotopic exchange under a steady-state. There are two types of sorbed phosphate, namely strongly and weakly bonded phosphate, the latter being able to exchange with phosphate (H232PO4−) ions in the soil solution. The experimental kinetic data was not fitted by the one exponential kinetic model. Starting from this observation, a new kinetic model is established by assuming two types of weakly bonded phosphate, which take part in the two parallel exchange processes. A biexponential kinetic equation is obtained, which fits the experimental data much better than the one exponential equation.
- Subjects
SOIL absorption &; adsorption; PHOSPHATES; SOIL solutions; PARALLEL processing; LANGMUIR isotherms
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2024, Vol 333, Issue 3, p1011
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1007/s10967-023-09325-1