Table 3: Estimated parameters and performance criteria of the models fitting to the moisture sorption data of cupuassu powder at 25°C.
| Isotherm |
Model |
Parameters |
R2 |
SEE |
P (%) |
| Adsorption |
Halsey |
a = 6.08 |
0.99 |
0.91 |
11.4 |
| b = 0.96 |
| Henderson |
a = 0.21 |
0.99 |
1.58 |
25.9 |
| b = 0.58 |
| Oswin |
a = 9.24 |
0.99 |
0.46 |
7.9 |
| b = 0.89 |
| GAB |
mo = 7.99 |
0.99 |
0.46 |
8.3 |
| c = 1.44 |
| k = 0.99 |
| Peleg |
k1 = 23.17 |
0.99 |
0.70 |
10.1 |
| n1 = 1.34 |
| k2 = 118.32 |
| n2 = 9.15 |
| Desorption |
Halsey |
a = 20.49 |
0.96 |
2.75 |
16.8 |
| b = 1.27 |
| Henderson |
a = 0.08 |
0.86 |
5.51 |
32.8 |
| b = 0.83 |
| Oswin |
a = 14.33 |
0.93 |
4.49 |
23.5 |
| b = 0.66 |
| GAB |
mo = 6.48 |
0.99 |
0.93 |
5.9 |
| c = -22.39 |
| k = 1.0 |
| Peleg |
k1 = 14.83 |
0.99 |
0.53 |
2.3 |
| n1 = 0.18 |
| k2 = 120.58 |
| n2 = 8.23 |