pseudo-second-order adsorption and the intra-particle
diffusion models. The pseudo-first-order rate
expression was evaluated with the following equation:
log (qe - qt ) = log qe - k/2.303. t (6)
where qe and qt are the amounts of humic acid,
(mg/g) adsorbed on adsorbents at equilibrium, and at
time t, respectively and k is the rate constant (min-1).
The value of qe
, k and correlation coefficient were
determined from the linear plots of log (qe - qt
) against
t. The adsorption rate constants and linear regression
values for pseudo-first-order under different
temperature were summarized in Table 4. From Table 4,
we can see that the theoretical qe
values calculated
from the pseudo-first-order kinetic model did not agree
with the experimental values, and the correlation
pseudo-second-order adsorption and the intra-particle
diffusion models. The pseudo-first-order rate
expression was evaluated with the following equation:
log (qe - qt ) = log qe - k/2.303. t (6)
where qe and qt are the amounts of humic acid,
(mg/g) adsorbed on adsorbents at equilibrium, and at
time t, respectively and k is the rate constant (min-1).
The value of qe
, k and correlation coefficient were
determined from the linear plots of log (qe - qt
) against
t. The adsorption rate constants and linear regression
values for pseudo-first-order under different
temperature were summarized in Table 4. From Table 4,
we can see that the theoretical qe
values calculated
from the pseudo-first-order kinetic model did not agree
with the experimental values, and the correlation
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