Table 5. Parameters of the isotherm models for the biosorption at 18°C [qm exp: 73.71 ± 4.8 mg g-1].
| Two-parameter isotherms Base 100 |
Three-parameter isotherms | ||
|---|---|---|---|
| Langmuir | Sips | ||
| KL [L mg-1] | 0.05430 ± 0.01092 | KS [(mg L-1)-1/ ns] | 0.05871 ± 0.01076 |
| qm [mg g-1] | 81.75 ± 4.74 | qm [mg g-1] | 79.61 ± 5.87 |
| r2 | 0.9728 | nS | 0.8127 ± 0.1872 |
| ASS | 295.5 | r2 | 0.9748 |
| Sy.x | 4.252 | ASS | 450.2 |
| AIC | 85.60 | Sy.x | 4.331 |
| Freundlich | AIC | 85.79 | |
| KF [(mg g-1) (mg L-1)-1/nF] | 16.00 ± 4.21 | Radke-Prausnitz | |
| nF | 3.267 ± 0.619 | AR [L g-1] | 5.029 ± 2.35 |
| r2 | 0.8922 | RR [L mg-1] | 83.16 ± 5.32 |
| ASS | 1913 | BR | 0.0029 ± 0.1801 |
| Sy.x | 8.748 | r2 | 0.9700 |
| AIC | 122.1 | ASS | 7691 |
| Temkin | Sy.x | 2.777 | |
| AT [L mg-1] | 1.071 ± 0.1061 | AIC | 2048 |
| BT [J mol-1] | 72.45 ± 1.56 | Redlich-Peterson | |
| r2 | 0.8919 | KRP [L g-1] | 3.245 ± 0.033 |
| ASS | 26223 | ARP [(L mg-1)BRP] | 0.01415 ± 0.0001 |
| Sy.x | 5.126 | BRP | 0.991 ± 0.009 |
| AIC | 3273 | r2 | 0.9965 |
| Halsey | ASS | 282.7 | |
| KH [(L g-1)-1/nH] | 1.218E-006 ± 0.888E-006 | Sy.x | 0.9672 |
| nH | -0.2318 ± 0.0091 | AIC | -61.61 |
| r2 | 0.7992 | Toth | |
| ASS | 47971 | qm [mg g-1] | 75.03 ± 3.47 |
| Sy.x | 6.933 | bT [(L mg-1 )-1/ nT] | 0.03345 ± 0.00559 |
| AIC | 3877 | nT | 0.4529 ± 0.1801 |
| Dubinin-Radushkevich | r2 | 0.9826 | |
| qm [mg g-1] | 73.73 ± 0.23 | ASS | 302.9 |
| BDR [mol2 J-2] | 0.0001679 ± 0.0015159 | Sy.x | 4.552 |
| r2 | 0.9573 | AIC | 75.09 |
| ASS | 9281 | ||
| Sy.x | 4.350 | ||
| AIC | 2234 | ||