was used to determine the
characteristic porosity and the apparent free energy of adsorption
(Ada et al., 2009). The experimental data were fitted well to Dubinin–
Radushkevich isotherm model. The magnitude of E is useful
for estimating the type of adsorption process. When the magnitude
of E is 8–16 kJ mol1, the adsorption type can be explained by
chemical adsorption. It’s accepted that when the adsorption energy
is below 8 kJ mol1, the type of adsorption can be defined as physical
adsorption (Demiral et al., 2008; Senthil Kumar et al., 2010).
According to the calculated mean free energy (0.71–2.36 kJ mol1),
the type of adsorption of dyestuff on the activated carbon was
described as physical adsorption.
was used to determine the
characteristic porosity and the apparent free energy of adsorption
(Ada et al., 2009). The experimental data were fitted well to Dubinin–
Radushkevich isotherm model. The magnitude of E is useful
for estimating the type of adsorption process. When the magnitude
of E is 8–16 kJ mol1, the adsorption type can be explained by
chemical adsorption. It’s accepted that when the adsorption energy
is below 8 kJ mol1, the type of adsorption can be defined as physical
adsorption (Demiral et al., 2008; Senthil Kumar et al., 2010).
According to the calculated mean free energy (0.71–2.36 kJ mol1),
the type of adsorption of dyestuff on the activated carbon was
described as physical adsorption.
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