Abstract
Abundantly generated Sawdust by local sawmills was used to prepare activated carbon (AC) by impregnation using 3 M orthophosphoric acid and calcination at 400 °C. The obtained AC was tested for the removal of Basic Brown1 dye, from aqueous solutions. The batch adsorption experiment studies were carried out to evaluate various adsorbing effect of experimental parameters such as pH, adsorbent dosage, equilibrium time and initial dye concentration. The results showed that the maximum removal of Basic Brown1 dye was achieved at pH= 5. Kinetic studies revealed that the pseudo-second-order model showed the best fitting to the experimental data. The equilibrium data were well described by Freundlich model. Thermodynamic parameters indicated that the adsorption process was endothermic and spontaneous. The results confirmed the important retention capacity of modified Sawdust to remove Basic Brown1 dye, a pollutant frequently present in the local textile industry wastewaters and causing major environmental pollution problems.
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