ACTIVATED CARBON FROM AGRICULTURAL WASTE AS AN ADSORBENT: ADSORPTION OF (R.ORANGE 3R) DYE FROM AQUEOUS SOLUTION

Abstract

Activated carbon (AC) prepared from silk cotton hull was used to remove textile dye (R. Orange 3R) from aqueous solution by adsorption under different conditions, such as agitation time, adsorbent dosage, pH and dye concentration. The time required to attain equilibrium was found to be 60 min for all the concentrations studied (5 to 20 mg/L). Adsorption followed both Langmuir and Fruendlich isotherms. The present removal was decreased with increase in pH. The adsorption capacity was found to be 27.54 mg/g of AC at a pH of 2 ± 0.2 at room temperature (30 ± 2°C) for the particle size of 125-250μm. Adsorption capacity was depend on pH of the solution, adsorbent dosage and initial dye concentration.