Kinetic parameters for F− ions adsorption on G, GL-CS/G, EDTA-GL-CS/G, SDS-CS/G, and CTAB-CS/G adsorbents.
Adsorbent | C 0 (mg L−1) | q e(exp) (mg g−1) | Pseudo-first-order | Pseudo-second-order | Intra-particle diffusion | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|
R 2 | k 1 (1 min−1) | q e(cal) (mg g−1) | R 2 | k 2 (g (mg min)−1) | q e(cal) (mg g−1) | R 2 | k i (mg (g min0.5)−1) | C (mg g−1) | |||
G | 50 | 0.585 | 0.901 | 0.010 | 0.618 | 0.999 | 0.190 | 0.620 | 0.801 | 0.01 | 0.45 |
GL-CS/G | 50 | 2.41 | 0.964 | 0.010 | 2.590 | 0.999 | 0.030 | 2.64 | 0.876 | 0.05 | 1.74 |
EDTA-GL-CS | 50 | 6.13 | 0.904 | 0.007 | 6.656 | 0.998 | 0.006 | 6.823 | 0.747 | 0.21 | 3.22 |
SDS-CS/G | 50 | 3.75 | 0.909 | 0.008 | 4.154 | 0.990 | 0.004 | 4.744 | 0.873 | 0.20 | 0.73 |
CTAB-CS/G | 50 | 8.29 | 0.902 | 0.010 | 8.690 | 0.995 | 0.002 | 9.489 | 0.917 | 0.35 | 2.92 |