Activated Carbon Prepared from Eichornia Crassipes as an Adsorbent for the Removal of Dyes from Aqueous Solution

The ability of the activated carbon prepared from Eichornia Crassipes to remove Reactive Magenta B and Reactive Turquoise Blue dyes from aqueous solution has been carried out as a function of contact time, dose (0.1-0.60 mg/50ml for Magenta B and 0.25-2.0 mg/50ml for Turquoise Blue), pH (2-10) and concentration (25, 50, 75, 100mg.L). An amount of 0.6 g of the adsorbent could remove 56.0% of the dye from 100mg.L Magenta B dye solution and 2.0 g could remove 45.87% of Turquoise Blue dye from 100 mg.L Turquoise Blue dye solution. The amount of dye adsorbed per unit weight of the adsorbent increased from 15.64 to 56.01mg.g with increasing concentration from 25 to 100 mg.L. The kinetics of adsorption was discussed in view of the kinetic models, the pseudo-first-order Lagergren model, Langmuir, Freundlich, Tempkin, Harkin’s-Jura, Elovich and the pseudo-second-order model.