ABSTRACT. Go back

PABLO ALAMOS O.1, HAROLD BEHRENS LE BAS2, EDMUNDO ACEVEDO H.3, ANA LÓPEZ E.4 Y TERESA PALMA D.5

Phosp It is found that Shapiro and Fried postulates are not adjusted to the results obtained. Instead, a basic ecuation, which permits to analyze the influence of someof the variables influencing the phenomenon appears:

log (P) sol. = K1 log t + K2
K1, K2 = constants.

The constant K1 is related to the content of extractable Al to pH 4,8 of the soils, according to:

log (-K1) = KI log Al + KII
KI and KII = constants.

With the initial content of P solution in accordance to the fol1owing expression:

-K1 = KIII log P + KIV
KIII and KIV = constants.

Experiments to determine the influence of the acidity of the media in the sorcion process were carried out as well as to determine the validity range of the Freundlich adsorción isoterma.

Key words:

1 Ingeniero Civil, Laboratorio de Radioquímica, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile.
2 Químico Ph. D., Laboratorio de Radioquímica, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile.
3 Ingeniero Agrónomo. Profesor Auxiliar de la Cátedra de Suelos. Facultad de Agronomía, Universidad de Chile.
4 Químico Investigador. Laboratorio de Radioquímica. Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile.
5 Químico Investigador. Laboratorio de Radioquímica. Facultad de Ciencias Fís

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