Table 1 Parameters for the Ni and Zn sorption kinetics on γ-Al2O3 in single- and binary-sorbate systems at pH 7.5
From: Competitive sorption of Ni and Zn at the aluminum oxide/water interface: an XAFS study
Sample | First second order | Pseudo second order | ||||
|---|---|---|---|---|---|---|
qe (mg−1 g−1) | k1 (mg−1 g−1 h−1) | R2 | qe (mg−1 g−1) | k2 (mg−1 g−1 h−1) | R2 | |
Ni in single-sorbate system | 11.87 | 0.396 | 0.995 | 20.00 | 0.05 | 0.998 |
Ni in binary-sorbate system | 13.21 | 0.258 | 0.981 | 22.22 | 0.06 | 0.994 |
Zn in single-sorbate system | 4.81 | 0.230 | 0.880 | 22.73 | 0.97 | 1.000 |
Zn in binary-sorbate system | 1.95 | 0.471 | 0.961 | 22.73 | 0.28 | 1.000 |