Decolorization of Dye Wastewater by Activated Carbons Produced from Peanut Shell using ZnCl2 Impregnation Method

This study assessed the adsorption capacity of different activated carbons produced from peanut shell for S3B dye (Sunfix Red 150%) present in wastewater under contact conditions. The pre-impregnation input material by ZnCl2 (weight ratio 1:1) increased surface charge carbon to positive value; While non-impregnation and post-impregnation procedures had negative charge. optimal conditions were at pH 5 with 10 g/L original , 180 minute contacting time. Under conditions, pre-impregnated highest capacity, corresponding to80.2% removal; while two other types obtainedabout 40% removal. process suited Freundlich isotherm model (multilayer adsorption) KF constants being 0.0377, 0.3314 0.0523 non-, pre- post-impregnated carbons, respectively.