. 2019 Jul 31;9(8):1098. doi: 10.3390/nano9081098

Table 2.

Kinetics parameters calculated on the basis of Equations (2) and (3) for methylene blue (MB) adsorption of porous carbon prepared with various amounts of Fe.

Sample	Dyes	Langmuir			Freundlich			Pseudo-First-Order			Pseudo-Second-Order
Sample	Dyes	Q₀	B	R²	K_F	N	R²	Q_e	K₁	R²	Q_e	K₂	R²
0 Fe	MB	188.4	0.031	0.83	1.6	1.15	0.91	124.8	0.50	0.995	142.9	0.016	0.999
0.5 Fe		412	0.012	0.94	1.5	1.01	0.95	240	0.59	0.992	250	0.012	0.999
1.0 Fe		506.8	0.009	0.96	1.4	0.99	0.96	274.7	0.59	0.995	333.3	0.009	0.998
1.5 Fe		442.5	0.011	0.95	1.4	1.0	0.95	260.9	0.41	0.993	277.8	0.005	0.999
2.0 Fe		194	0.029	0.84	1.6	1.2	0.91	127	0.50	0.996	142.9	0.012	0.998