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Table 2 Release kinetic parameters of Urea and Calcium

From: Development of hydrogel based on Carboxymethyl cellulose/poly(4-vinylpyridine) for controlled releasing of fertilizers

Kinetic models

Parameters

Fertilizers

Urea

Ca2+

Zero order

R2

0.91

0.63

First order

R2

0.94

0.82

 

K1

0.034

0.87

Korsmeyer–Peppas

R2

0.97

0.82

Kkp

0.034

23.7

n

1.59

0.38

Higuchi

R2

0.97

0.74

kH

14.79

10.26

n

14.7

10.3

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BMC Chemistry

ISSN: 2661-801X

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