Table 3.
Adsorption parameters for inhibition of MS in 0.5M HCl in the presence of LCLE at different temperature and time.
4hr |
8hr |
12hr |
|||||||
---|---|---|---|---|---|---|---|---|---|
303K | 318K | 333K | 303K | 318K | 333K | 303K | 318K | 333K | |
Freundlish isotherm | |||||||||
slope | 0.0398 | 0.0984 | 0.0766 | 0.0321 | 0.100 | 0.072 | 0.038 | 0.0923 | 0.0819 |
intercept | 0.0626 | 0.0849 | 0.1336 | 0.0592 | 0.083 | 0.128 | 0.055 | 0.0776 | 0.1202 |
kf | 0.7352 | 0.1416 | 0.8658 | 0.7451 | 0.827 | 0.873 | 0.881 | 0.8364 | 0.7582 |
n | 13.158 | 10.204 | 25.641 | 13.889 | 10.00 | 31.25 | 12.35 | 10.870 | 27.027 |
R2 | 0.992 | 0.994 | 0.924 | 0.981 | 0.955 | 0.968 | 0.989 | 0.9450 | 0.9780 |
Langmuir isotherm | |||||||||
slope | 0.9234 | 0.9016 | 0.9602 | 0.928 | 0.900 | 0.968 | 0.918 | 0.9077 | 0.9622 |
intercept | 0.1336 | 0.0849 | 0.0626 | 0.1278 | 0.083 | 0.059 | 0.120 | 0.0776 | 0.0550 |
K (l/g) | 1.3602 | 1.2159 | 1.155 | 1.3421 | 1.209 | 1.146 | 1.319 | 1.1956 | 1.135 |
R2 | 0.999 | 0.999 | 0.999 | 0.999 | 0.999 | 1 | 0.999 | 0.999 | 1 |
Temkin isotherm | |||||||||
slope | 0.0549 | 0.0783 | 0.034 | 0.0522 | 0.080 | 0.028 | 0.060 | 0.0755 | 0.0329 |
intercept | 0.7352 | 0.8224 | 0.8658 | 0.745 | 0.827 | 0.873 | 0.758 | 0.8363 | 0.8809 |
B | 0.0549 | 0.0783 | 0.034 | 0.0522 | 0.080 | 0.028 | 0.060 | 0.075 | 0.0329 |
KT (mol/J) | 45888 | 33767 | 81432 | 48261 | 33008 | 99952 | 41848 | 35253 | 84154 |
AT | 6.5E+05 | 3.6E+04 | 1.1E+11 | 1.6E+06 | 3.0E+04 | 4.8E+13 | 2.9E+05 | 7.0E+04 | 4.2E+11 |
R2 | 0.999 | 0.993 | 0.922 | 0.983 | 0.951 | 0.967 | 0.99 | 0.941 | 0.978 |