Temperature variation had a positive effect on the q values. In case of cellulose and CCDA, q values increased from 1 to 2 mg/g and 12.5 to 17.7 mg/g, respectively, with the temperature variation from 25 to 37 °C, and thereafter, equilibrium was attained with the further increase in the temperature (Fig. 7b). With an increase in the temperature, the polymer structure opens and more active sites become accessible to the dye, hence adsorption capacity was observed to increase [35]. Afterwards it equilibrates due to saturation of the active sites. Hence the optimum temperature of 37 °C was selected for further adsorption studies.