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Comparison of Five Kinetic Models for Orthophosphate Reactions in Mineral Soils
Author(s) -
Enfield Carl G.,
Harlin Curtis C.,
Bledsoe Bert E.
Publication year - 1976
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/sssaj1976.03615995004000020017x
Subject(s) - sorption , freundlich equation , langmuir , soil water , diffusion , mineral , kinetic energy , chemistry , mineralogy , thermodynamics , environmental chemistry , soil science , geology , adsorption , organic chemistry , physics , quantum mechanics
The kinetics of orthophosphate sorption with 25 mineral soils have been experimentally measured under laboratory conditions. The 25 mineral soils represent a wide range of physical and chemical properties. Regression analyses have been performed fitting the experimental data to five kinetic models. The five kinetic models include: a linearized first‐order sorption, a first‐order Freundlich sorption, an empirical function, a diffusion‐limited Langmuir sorption, and a diffusion‐limited Freundlich sorption. Mean correlation coefficients of 0.81, 0.83, 0.84, 0.86, and 0.88 were obtained for the models, respectively.