|
|
Table 2. Isotherm model constants and correlation coefficients for adsorption of chromium ions from aqueous solution using various adsorbents. |
Type of adsorbent |
Langmuir |
Freundlich |
||||||||
|
KL (mol/L) |
R2 |
a |
b |
R2 |
|||||
Chitosan coated acid treated oil palm shell charcoal (CCAB) |
60.25 |
2954 |
0.997 |
10.67 |
0.594 |
0.973 |
||||
Chitosan coated oil palm shell charcoal (CCB) |
52.68 |
2004 |
0.996 |
9.59 |
0.489 |
0.956 |
||||
Acid treated oil palm shell Charcoal (AOPSC) |
44.68 |
1766 |
0.996 |
7.36 |
0.389 |
0.951 |
||||
| Temperature: 25ºC and pH 5.5. |
|
|