Table 3. Summary of the maximum oil absorption capacities and the absorption rate constants of the PMSQ–SF aerogels at 23 °C using pseudo-first and -second order models.
|
EM-SF-4 | EM-SF-40 | EMT-10-SF-4 | EMT-10-SF-40 | |
Maximum absorption capacity, Qm (g g–1 %) | 869 | 1025 | 520 | 596 | |
Pseudo-second order | Correlation coefficient (R2) | 0.98 | 0.86 | 0.90 | 0.90 |
Sorption rate constant (k2) | 0.0001 | 0.00047 | 0.00037 | 0.00036 | |
Pseudo-first order | Correlation coefficient (R2) | 0.98 | 0.41 | 0.59 | 0.73 |
Sorption rate constant (k1) | 0.07 | 0.02 | 0.005 | 0.065 |