Table 4 Thermodynamic parameters for the adsorption of Cr(VI) by sour cherry kernel shell powder (R-SCKS) and chitosan-coated sour cherry kernel shell powder beads (C-SCKS)
Cr(VI) adsorbents | ΔH° (J.mol−1) | ΔS° (J.K− 1 mol−1) | ΔG°(J.mol−1) | |||
|---|---|---|---|---|---|---|
T = 298.15 K | T = 308.15 K | T = 323.15 K | T = 338.15 K | |||
R-SCKS | 0.01 | 14.00 | − 4104.98 | − 4315.02 | − 4525.07 | − 4735.11 |
C-SCKS | 0.06 | 27.81 | − 8153.21 | − 8570.40 | − 8987.59 | − 9404.78 |