Sample code Cₒ k2 (g mg−1 min−1) qe,cal. (mg g−1) R2 Ac blank 1000 600 300 0.4943 2.2354 7.6909 2428.5638 1510.7657 751.8797 0.99926 0.99971 0.99992 Ac 4% 1000 600 300 0.2753 0.7798 4.8753 2653.0055 1595.0693 763.3588 0.99948 0.99836 0.99996 Ac 8% 1000 600 300 0.1334 0.2634 1.2721 2775.8039 1682.6802 793.6508 0.99585 0.99577 0.9978

Table 6: Second order kinetic parameters for adsorption of MB by Ac blank, Ac 4%, Ac 8% at different concentrations.