Adsorbent Code qe exp. mg.g−1 qe cal.  mg.g−1 K2 g. mol-1.min−1 R2
OPC 400 427.35 0.0008 0.992
OSC 378 344.83 0.0002 0.998
PC 303 316.46 0.0002 0.999
SC 47 47.85 0.0026 0.999
Table 4: Parameters of second order kinetic model for adsorption of MB by SC, PC, OSC and OPS.