Table 4 Experimental maximum capacity and calculated isotherm parameters for the adsorption of MB onto Ng-CuGA.
From: One-step synthesis of nitrogen-grafted copper-gallic acid for enhanced methylene blue removal
Model | Initial concentration of MB (mg/L) | |
|---|---|---|
500 | 2000 | |
Qexp (mg g-1) | 70.745 ± 0.077 | 196.399 ± 0.114 |
Pseudo first order | ||
Q1 (mg g-1) | 67.732 ± 1.043 | 189.367 ± 8.069 |
k1 (h-1) | 29.837 ± 4.217 | 0.894 ± 0.124 |
R2 | 0.972 | 0.941 |
Pseudo second order | ||
Q2 (mg g-1) | 69.189 ± 0.750 | 216.436 ± 10.386 |
k2 (g mg-1 h-1) | 0.627 ± 0.091 | 0.005 ± 0.001 |
R2 | 0.988 | 0.958 |
