Application of Elovich Equation to the Kinetics of Phosphate Release and Sorption in Soils

S. H. Chien; W. R. Clayton

doi:10.2136/sssaj1980.03615995004400020013x

journal article Mar 01, 1980

Application of Elovich Equation to the Kinetics of Phosphate Release and Sorption in Soils

S. H. Chien W. R. Clayton

Soil Science Society of America Journal Vol. 44 No. 2 pp. 265-268 · Wiley

View at Publisher Save 10.2136/sssaj1980.03615995004400020013x

Abstract

Abstract

Experimental data on the phosphate release and sorption in soils, when inadequately described by a first‐order kinetic reaction, are often interpreted as a combination of two or three simultaneous first‐order reactions. A simple modified Elovich equation in the form:
q
= (1/β) ln (αβ) + (1/β) ln
t
was derived to fit the reported experimental data in literature that failed to conform to a single first‐order kinetic equation. In this equation,
q
is the amount of phosphate released or sorbed, and α and β are constants. The equation successfully described the data as a single straight line that covers the entire course of reaction time. It also appears that constants of α and β may be used for comparison of reaction rates of phosphate release or sorption in different soils.

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Published: Mar 01, 1980
Vol/Issue: 44(2)
Pages: 265-268
License: View

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Cite This Article

S. H. Chien, W. R. Clayton (1980). Application of Elovich Equation to the Kinetics of Phosphate Release and Sorption in Soils. Soil Science Society of America Journal, 44(2), 265-268. https://doi.org/10.2136/sssaj1980.03615995004400020013x

Application of Elovich Equation to the Kinetics of Phosphate Release and Sorption in Soils

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