Table 5.
Freundlich and Langmuir isotherm parameters for 2,4-DNP removal by βCD-TDI and βCD-HDI.
| isotherms | βCD-TDI |
βCD-HDI |
||||
|---|---|---|---|---|---|---|
| temperature | ||||||
| 298 K | 318 K | 338 K | 298 K | 318 K | 338 K | |
| Langmuir | ||||||
| qm (mg g−1) | −1.6978 | −2.8596 | −5.4025 | 222.22 | 294.12 | −61.35 |
| b (l mg−1) | −0.0340 | −0.014 | −0.072 | 0.0210 | 0.0360 | −0.025 |
| R2 | 0.9795 | 0.9171 | 0.7778 | 0.9882 | 0.9651 | 0.9010 |
| Freundlich | ||||||
| KF ((mg g−1)(l mg−1)1/n) | 10.129 | 4.5426 | 1.1819 | 0.0186 | 0.0101 | 0.6028 |
| n | 1.1455 | 1.0646 | 0.7356 | 4.9370 | 0.0001 | 0.6713 |
| R2 | 0.9901 | 0.9714 | 0.9601 | 0.9872 | 0.9493 | 0.8373 |