Table 4 Initial and final Cr6+ concentrations and the estimated Langmuir and Freundlich constants after 4 h contact with alginate beads with or without bacterial inoculation at 25 °C.
From: Innovative low-cost biosorption process of Cr6+ by Pseudomonas alcaliphila NEWG-2
C0 (initial Cr6+, mg/l) | Ce (final Cr6+ or equilibrium, mg/l) | |
|---|---|---|
Inoculated beads | Uninoculated beads | |
200 | 3.404 | 35.636 |
250 | 5.910 | 49.343 |
300 | 10.076 | 98.350 |
350 | 15.453 | 119.474 |
400 | 31.554 | 137.114 |
Langmuir | ||
qmax(mg/g) | 10.000 | 7.405 |
b constant (L/mg) | 0.2468 | 0.0334 |
R2 | 0.9990 | 0.9225 |
RL (equilibrium type) | 0.01002 (favorable) | 0.069 |
Freundlich | ||
Kf constant (mg/g) | 21.337 | 3.06196 |
n constant | 3.652 | 3.7232 |
R2 | 0.9180 | 0.74432 |
