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Table 5.26. Parameters of the sorption isotherm models, coefficient of determination R 2 , mean relative deviation modulus P,<br />
and standard errors of the estimate E s for isotherms of green leaf fibre aged 52 and 36 weeks at 30, 45, 55 and 60 o C.<br />
Green leaf fibre<br />
Model Parameter 52 weeks 36 weeks<br />
30 o C 45 o C 55 o C 60 o C 30 o C 45 o C 55 o C 60 o C<br />
GAB mo 5.71 4.54 3.68 3.52 4.53 4.09 4.09 1.99<br />
b 8.388 10.13 13.82 62.30 37.02 12.67 10.10 15.78<br />
c 0.7995 0.8627 0.9018 0.9048 0.8389 0.8825 0.8740 0.9770<br />
R 2 0.9712 0.9946 0.9982 0.9775 0.9882 0.9977 0.9986 0.8813<br />
P 7.108 4.986 3.008 5.315 2.796 3.918 3.402 33.12<br />
Es 1.840 0.9516 0.6234 2.131 1.146 0.6741 0.4737 8.604<br />
Hailwood Horrobin b 0.021 0.014 0.014 0.004 0.006 0.011 0.020 -0.077<br />
c 0.151 0.207 0.253 0.277 0.213 0.237 0.215 0.746<br />
d -0.135 -0.190 -0.240 -0.254 -0.183 -0.218 -0.205 -0.660<br />
R 2 0.971 0.995 0.998 0.977 0.988 0.998 0.999 0.876<br />
P 6.499 4.862 3.593 5.491 2.755 5.162 5.266 31.93<br />
Es 1.899 0.9462 0.6223 2.131 1.154 0.9407 0.7823 8.485<br />
Henderson b 0.02271 0.03599 0.05576 0.04672 0.01763 0.04087 0.04901 0.07174<br />
c 1.588 1.414 1.268 1.335 1.702 1.372 1.333 1.130<br />
R 2 0.9891 0.9884 0.9800 0.9574 0.9748 0.9867 0.9878 0.9238<br />
P 6.489 6.520 9.573 13.74 8.357 7.624 6.951 19.83<br />
Es 1.346 1.370 2.165 3.041 1.519 1.716 1.199 10.73<br />
Bradley b 3.903 2.689 1.994 2.059 3.796 2.389 2.390 1.306<br />
c 0.8180 0.8436 0.8606 0.8580 0.8144 0.8504 0.8425 0.9049<br />
R 2 0.9813 0.9908 0.9815 0.9631 0.9879 0.9885 0.9924 0.7986<br />
P 6.030 8.049 17.14 17.44 7.459 11.61 10.19 51.71<br />
Es 1.322 1.083 1.743 2.438 1.038 1.271 0.9734 9.580<br />
Caurie I b 0.1466 0.1602 0.1787 0.1712 0.1429 0.1659 0.1725 0.1909<br />
mo 0.8707 0.8507 0.8522 0.8568 0.8912 0.8500 0.8736 0.7991<br />
R 2 0.9572 0.9798 0.9910 0.9859 0.9837 0.9897 0.9790 0.9741<br />
P 12.14 9.141 5.970 6.446 6.481 6.403 9.917 9.662<br />
Es 2.419 2.115 1.927 2.059 1.553 1.736 2.113 7.478<br />
Smith b -5.735 -6.784 -7.697 -7.537 -5.645 -7.141 -6.713 -11.67<br />
c 4.184 2.771 1.154 1.363 3.899 2.140 2.121 -2.703<br />
R 2 0.970 0.994 0.995 0.978 0.9883 0.9973 0.9971 0.8285<br />
P 11.71 5.841 7.227 10.02 5.170 2.881 5.268 39.14<br />
Es 1.672 0.8948 0.9478 1.892 1.019 0.6128 0.6027 8.840<br />
Oswin b 8.827 8.233 7.311 7.278 8.391 7.817 7.562 4.935<br />
c 0.285 0.329 0.378 0.376 0.293 0.351 0.343 0.575<br />
R 2 0.965 0.982 0.987 0.976 0.980 0.990 0.984 0.895<br />
P 14.56 12.00 12.00 9.661 9.059 9.274 12.88 22.64<br />
Es 1.812 1.496 1.496 1.952 1.318 1.211 1.410 6.904<br />
Halsey b 2.563 2.293 2.060 2.156 2.661 2.207 2.197 1.798<br />
c 121.8 60.82 30.47 39.59 148.3 47.26 40.63 18.47<br />
R 2 0.9160 0.9505 0.9712 0.9753 0.9621 0.9650 0.9506 0.9702<br />
P 17.23 14.60 11.54 9.524 11.08 12.25 14.66 13.26<br />
Es 3.045 2.923 2.819 2.660 2.197 2.602 2.910 6.927<br />
Caurie II b 0.9786 0.8001 0.5659 0.6730 1.063 0.7374 0.6307 0.4440<br />
c 2.246 2.486 2.750 2.610 2.093 2.554 2.623 3.042<br />
R 2 0.9858 0.9734 0.9564 0.9355 0.9701 0.9657 0.9688 0.8786<br />
P 5.227 9.771 16.01 16.25 9.358 13.23 12.71 24.27<br />
Es 2.064 2.701 3.809 4.414 2.268 3.209 2.622 12.85<br />
Modified GAB b 5.455 4.320 3.596 3.509 4.491 3.914 3.984 1.932<br />
c 0.808 0.869 0.904 0.905 0.840 0.888 0.877 0.978<br />
d 336.758 836.416 1196.953 4404.242 1369.123 1217.131 770.973 -2000000000<br />
R 2 0.971 0.995 0.998 0.977 0.988 0.998 0.999 0.872<br />
P 6.857 4.9012 3.6396 5.370 2.604 4.5640 4.2421 30.740<br />
Es 1.830 0.9038 0.6028 2.130 1.145 0.6073 0.4505 8.533<br />
Kuhn b -0.3804 -0.4428 -0.5005 -0.4916 -0.3771 -0.4724 -0.4295 -0.8330<br />
c 8.819 8.385 7.506 7.534 8.421 7.954 7.770 5.708<br />
R 2 0.8268 0.8578 0.8927 0.9037 0.8544 0.8841 0.8667 0.9165<br />
P 35.45 37.41 37.50 30.00 28.29 35.73 39.09 29.52<br />
Es 4.023 4.250 4.202 3.937 3.596 4.032 4.080 6.170<br />
Iglesias - Chirife b 0.381 0.443 0.501 0.492 0.377 0.473 0.430 0.834<br />
c 8.988 8.583 7.729 7.754 8.588 8.164 7.962 6.075<br />
R 2 0.825 0.857 0.892 0.903 0.853 0.883 0.866 0.916<br />
P 35.62 37.61 37.72 30.18 28.40 35.93 39.28 29.89<br />
Es 4.038 4.267 4.219 3.953 3.611 4.049 4.095 6.179<br />
Mizrahi b -8.988 -8.583 -7.729 -7.754 -8.588 -8.164 -7.962 -6.075<br />
c -8.607 -8.140 -7.228 -7.262 -8.211 -7.691 -7.533 -5.241<br />
R 2 0.825 0.857 0.892 0.903 0.853 0.883 0.866 0.916<br />
P 35.62 37.61 37.72 30.18 28.40 35.93 39.28 29.89<br />
Es 4.038 4.267 4.219 3.953 3.611 4.049 4.096 6.179<br />
Modified BET mo 2.409 2.593 2.709 2.672 2.353 2.656 2.468 3.755<br />
b 80000000 30000000 40000000 200000000 50000000 70000000 40000000 5000857<br />
R 2 0.539 0.714 0.837 0.835 0.589 0.785 0.751 0.908<br />
P 39.47 35.10 28.70 30.19 40.18 32.41 32.70 21.91<br />
Es 6.559 6.026 5.178 5.155 6.045 5.489 5.571 6.459<br />
Note: m o, b, c and d are constants.<br />
219
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