Evaluation of using electric arc furnace slag as an adsorbent for dyes removal

The adsorption of two common textile dyes – orange G and methyl violet onto an electric arc furnace slag was studied. Batch study shows that were dependent highly on pH value. Removal decreased with the increase initial optimum observed at 3. Moreover, total removal percentage low did not exceed 45% pH. However, increased pH, maximum (about 94%) 11. Based obtained data, dye chosen to effect agitation speed, concentration, adsorbent dosage particle size capacity. For under investigation, equilibrium capacity qe (mg/g) for 17.4 mg/g 3.29 mg/g, respectively. Also, batch studies show rate rapid beginning slowed down till equilibrium.In contrast, slow until it approached equilibrium. Pseudo-Second order model well represented kinetics data. value K2 while in concentration size. Equilibrium data evaluated using Langmuir Freundlich isotherm models found best fitted experiments