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Table 5.24. 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 dry leaf fibre aged 52 and 36 weeks at 30, 45, 55 and 60 o C.<br />
Dry 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 5.41 4.17 4.24 2.68 4.68 4.47 4.47 0.88<br />
b 27.85 15.30 6.343 32.97 28.03 12.47 11.88 200.0<br />
c 0.8069 0.8665 0.8734 0.9484 0.8411 0.8635 0.8533 1.000<br />
R 2 0.9628 0.9835 0.9212 0.9423 0.9915 0.9709 0.9669 0.7976<br />
P 9.266 5.112 11.69 15.45 4.628 9.043 8.325 59.97<br />
Es 1.988 1.539 3.749 4.507 1.023 2.174 2.129 11.75<br />
Hailwood Horrobin b 0.007 0.009 0.017 -0.028 0.006 0.000 0.004 -2.953<br />
c 0.167 0.233 0.230 0.457 0.207 0.248 0.236 10.811<br />
d -0.138 -0.210 -0.216 -0.410 -0.179 -0.217 -0.208 -7.931<br />
R 2 0.963 0.984 0.922 0.942 0.992 0.972 0.968 0.871<br />
P 9.627 4.888 10.98 14.22 4.144 12.71 9.589 54.50<br />
Es 1.985 1.522 3.752 4.429 1.019 2.064 2.114 8.669<br />
Henderson b 0.009977 0.03352 0.05206 0.06142 0.01839 0.02598 0.02807 0.06554<br />
c 1.865 1.466 1.306 1.216 1.666 1.525 1.524 1.221<br />
R 2 0.9443 0.9845 0.9811 0.9378 0.9733 0.9615 0.9857 0.8355<br />
P 11.91 7.280 9.018 16.99 8.763 11.09 6.854 27.80<br />
Es 1.738 1.773 3.241 6.290 1.398 2.225 1.982 14.27<br />
Bradley b 5.221 2.756 2.306 1.536 3.644 3.036 3.088 1.286<br />
c 0.8073 0.8347 0.8468 0.8845 0.8226 0.8380 0.8288 0.8961<br />
R 2 0.9692 0.9833 0.9310 0.8933 0.9931 0.9745 0.9745 0.6517<br />
P 10.56 8.485 12.88 34.47 7.613 11.14 8.144 62.43<br />
Es 1.603 1.377 3.123 5.367 0.8198 1.748 1.645 12.71<br />
Caurie I b 0.1278 0.1596 0.1743 0.1845 0.1429 0.1493 0.1513 0.1917<br />
mo 0.8776 0.8746 0.8693 0.8321 0.8730 0.8525 0.8762 0.8572<br />
R 2 0.9439 0.9861 0.9636 0.9875 0.9809 0.9582 0.9773 0.9028<br />
P 9.523 7.359 12.66 7.986 6.933 10.38 8.795 21.70<br />
Es 2.157 1.706 3.204 3.440 1.492 1.429 1.754 11.82<br />
Smith b -5.388 -6.397 -6.919 -9.471 -5.934 -6.548 -6.125 -10.67<br />
c 5.275 2.732 1.963 -0.8228 3.889 3.322 3.306 -2.652<br />
R 2 0.9602 0.9887 0.9361 0.9208 0.9936 0.9826 0.9782 0.6796<br />
P 9.422 4.095 8.434 25.82 9.918 10.86 7.048 50.40<br />
Es 1.820 1.134 3.005 4.624 2.561 1.442 1.521 12.19<br />
Oswin b 9.610 7.780 7.365 5.928 8.611 8.332 8.084 3.345<br />
c 0.260 0.331 0.358 0.478 0.297 0.325 0.316 0.656<br />
R 2 0.955 0.984 0.939 0.960 0.986 0.988 0.979 0.759<br />
P 11.63 8.960 15.92 10.71 9.335 11.16 8.530 42.23<br />
Es 1.926 1.362 2.933 3.273 1.172 1.174 1.496 10.56<br />
Halsey b 2.935 2.360 2.169 1.937 2.607 2.467 2.514 1.910<br />
c 378.8 65.31 38.11 23.71 139.7 101.8 102.2 19.64<br />
R 2 0.9202 0.9613 0.9314 0.9839 0.9589 0.9286 0.9476 0.9090<br />
P 12.87 12.59 17.26 9.198 11.60 14.43 13.66 20.17<br />
Es 2.698 2.390 3.635 3.193 2.229 1.995 2.273 11.23<br />
Caurie II b 1.265 0.8212 0.5930 0.5346 1.059 0.9763 0.9243 0.4858<br />
c 1.925 2.396 2.682 2.832 2.142 2.276 2.283 2.812<br />
R 2 0.9546 0.9687 0.9667 0.8968 0.9709 0.9226 0.9581 0.7937<br />
P 11.47 10.17 10.56 21.82 10.19 17.14 10.97 31.48<br />
Es 2.204 2.942 4.296 8.234 2.284 3.632 3.185 15.69<br />
Modified GAB b 5.587 4.014 3.852 2.627 4.599 4.047 4.103 0.208<br />
c 0.798 0.872 0.885 0.950 0.844 0.877 0.866 1.015<br />
d 923.420 1364.860 950.206 500000000 1211.634 100000000 3505.082 200000000<br />
R 2 0.963 0.984 0.922 0.941 0.992 0.972 0.968 0.857<br />
P 9.458 4.803 11.126 13.780 4.241 12.747 9.428 66.94<br />
Es 1.966 1.521 3.713 4.472 1.017 2.034 2.061 9.11<br />
Kuhn b -0.3552 -0.4251 -0.4596 -0.6546 -0.3965 -0.4431 -0.4012 -0.7827<br />
c 9.660 7.908 7.519 6.343 8.640 8.500 8.314 4.686<br />
R 2 0.8088 0.8847 0.8770 0.9554 0.8595 0.9115 0.8909 0.7951<br />
P 29.38 30.80 39.89 27.45 30.61 29.19 28.42 30.39<br />
Es 3.990 3.617 4.168 3.469 3.704 3.253 3.400 9.746<br />
Iglesias - Chirife b 0.355 0.425 0.460 0.655 0.397 0.443 0.402 0.784<br />
c 9.819 8.097 7.723 6.633 8.816 8.697 8.493 5.030<br />
R 2 0.807 0.884 0.876 0.955 0.858 0.911 0.890 0.795<br />
P 29.51 30.94 40.09 27.74 30.77 29.37 28.59 30.67<br />
Es 4.004 3.634 4.183 3.486 3.720 3.271 3.415 9.748<br />
Mizrahi b -9.819 -8.097 -7.723 -6.633 -8.816 -8.697 -8.493 -5.030<br />
c -9.463 -7.672 -7.263 -5.977 -8.419 -8.253 -8.092 -4.246<br />
R 2 0.807 0.884 0.876 0.955 0.858 0.911 0.890 0.795<br />
P 29.51 30.94 40.09 27.73 30.77 29.37 28.56 30.67<br />
Es 4.004 3.634 4.183 3.486 3.720 3.271 3.415 9.748<br />
Modified BET mo 2.408 2.469 2.547 3.155 2.450 2.599 2.413 3.447<br />
b 20000000 60000000 80000000 50000000 40000000 50000000 100000000 1072586<br />
R 2 0.372 0.735 0.779 0.943 0.612 0.733 0.685 0.780<br />
P 43.35 35.17 31.61 20.53 39.09 35.35 37.96 25.63<br />
Es 7.230 5.486 5.585 3.930 6.156 5.647 5.774 10.10<br />
Note: m o, b, c and d are constants.<br />
217
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