EN
The cellulose matrix was characterized by FTIR, 13C NMR, XRD, TG, SEM and applied in the removal of the
reactive red RB dye in an aqueous medium, with a capacity
of adsorption at a pH of 2.0, and an adsorption equilibrium
time which was reached at around 200 mins. The kinetic
study for the system followed the Elovich model. The
adsorption isotherms for the system at temperatures
of 35°C, 45°C, and 55°C were adjusted to the Langmuir,
Freundlich, Sips, and Redlich-Peterson non-linear models,
with a capacity of adsorption for adsorbent of 5.97 mg g-1,
5.64 mg g-1, and 4.62 mg g-1, respectively. The adsorption
occurred by electrostatic interactions and it was favorable
and spontaneous, with the influence of temperature.