3.2.4 Curcumin absorption kinetics study
To check the absorption rate, kinetic adsorption and interaction
behavior between curcumin and synthesized metal-organic nanocomposites
with weight percentages 30, 10, and 50, three kinetic models of
first-order, second-order and intra-molecular adsorption were used
(Fig.8). The kinetic variables of the surface adsorption process of
curcumin by the magnetic metal-organic framework nanocomposites studied
and presented in Table 5.
Fig (8): Investigation of kinetic absorption models
The quasi-second order were found to be better than the other two models
for synthesized magnetic metal-organic frameworks nanocomposites because
of the above equation, the R2 correlation coefficient
for the quasi-second order is calculated. All coefficients are very
close to one, while the two models of the quasi-first order and the
intra-molecular diffusion, are more distant from the quasi-second order
model, respectively.
So we can conclude curcumin absorption kinetics using a variety of
synthesized nanocomposites follows the quasi-second order. On the other
hand, the amount of (qe)Cal absorption obtained from the
above equations in the kinetic model absorption is quasi-secondary order
it is much closer to the experimental absorption of (qe)
exp.
Table 6: Data obtained from the calculation of different synthetic
adsorption models for different types of synthesized nanocomposites