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Table 5.20. 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 stalk pith aged 52 and 36 weeks at 30, 45, 55 and 60 o C.<br />
Stalk pith<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 5.39 4.74 4.20 4.05 5.36 4.62 3.91 3.56<br />
b 364.8 200.0 10.22 4.933 17.32 10.65 17.66 200.0<br />
c 0.8465 0.8924 0.9166 0.9229 0.8330 0.8894 0.9138 0.9210<br />
R 2 0.9659 0.9784 0.9690 0.9964 0.9687 0.9844 0.9925 0.9613<br />
P 5.862 6.668 7.611 6.116 8.924 7.829 7.302 9.887<br />
Es 2.427 2.461 3.435 1.243 2.158 2.029 1.513 3.387<br />
Hailwood Horrobin b -0.002 -0.003 0.016 0.028 0.006 0.008 0.022 -0.007<br />
c 0.191 0.221 0.214 0.210 0.185 0.215 0.211 0.301<br />
d -0.162 -0.195 -0.211 -0.219 -0.160 -0.199 -0.211 -0.272<br />
R 2 0.966 0.979 0.969 0.997 0.969 0.985 0.993 0.962<br />
P 5.940 6.428 8.880 6.597 7.947 7.272 7.878 8.197<br />
Es 2.654 2.477 3.613 1.160 2.145 1.972 1.521 3.378<br />
Henderson b 0.009239 0.01985 0.05688 0.08503 0.01592 0.03755 0.06046 0.04232<br />
c 1.796 1.510 1.178 1.053 1.661 1.331 1.188 1.322<br />
R 2 0.9490 0.9366 0.9719 0.9877 0.9663 0.9796 0.9590 0.9133<br />
P 11.87 14.42 11.68 9.883 9.603 10.36 14.71 19.67<br />
Es 2.921 4.221 4.590 2.737 2.045 2.543 2.903 5.143<br />
Bradley b 3.949 2.491 1.719 1.522 3.726 2.249 1.770 1.835<br />
c 0.8465 0.8775 0.8933 0.8974 0.8359 0.8736 0.8836 0.8793<br />
R 2 0.9649 0.9520 0.9412 0.9733 0.9763 0.9780 0.9753 0.9261<br />
P 10.63 18.35 27.04 26.26 9.800 12.88 20.83 26.48<br />
Es 2.202 3.280 4.227 2.918 1.671 2.114 2.452 4.187<br />
Caurie I b 0.1235 0.1384 0.1742 0.1957 0.1363 0.1584 0.1800 0.1662<br />
mo 0.8043 0.7638 0.7706 0.7847 0.8336 0.7868 0.8008 0.8116<br />
R 2 0.9771 0.9806 0.9856 0.9872 0.9664 0.9832 0.9785 0.9699<br />
P 7.394 8.728 8.550 9.859 9.933 6.954 10.58 12.52<br />
Es 2.191 3.154 4.204 2.961 2.082 2.260 2.635 3.672<br />
Smith b -6.973 -8.893 -10.27 -10.67 -6.463 -8.570 -9.340 -9.005<br />
c 5.005 2.916 0.1763 -0.8895 4.369 2.109 0.4190 0.6628<br />
R 2 0.9706 0.9675 0.9579 0.9905 0.9756 0.9880 0.9900 0.9472<br />
P 6.136 11.40 15.24 12.66 9.088 5.577 11.32 17.83<br />
Es 2.012 2.699 3.575 1.736 1.698 1.566 1.555 3.538<br />
Oswin b 10.443 9.946 8.470 7.698 9.476 8.860 7.945 7.786<br />
c 0.293 0.347 0.407 0.436 0.296 0.363 0.400 0.398<br />
R 2 0.967 0.957 0.950 0.990 0.972 0.985 0.982 0.944<br />
P 7.479 9.835 13.88 13.74 11.88 11.51 15.31 12.51<br />
Es 2.139 3.112 3.896 1.755 1.809 1.758 2.085 3.648<br />
Halsey b 2.766 2.353 1.910 1.740 2.616 2.139 1.916 2.089<br />
c 364.2 122.6 29.24 16.58 182.4 53.99 25.76 41.16<br />
R 2 0.9651 0.9763 0.9666 0.9628 0.9406 0.9591 0.9646 0.9730<br />
P 9.558 8.529 14.45 16.70 14.73 12.26 13.06 11.73<br />
Es 2.684 3.696 5.033 4.307 2.727 3.214 3.762 4.031<br />
Caurie II b 1.367 1.151 0.5972 0.2818 1.149 0.8200 0.5210 0.7578<br />
c 1.984 2.315 2.953 3.310 2.146 2.639 2.956 2.628<br />
R 2 0.9443 0.9130 0.9439 0.9672 0.9627 0.9629 0.9496 0.8887<br />
P 11.60 18.77 18.71 15.14 10.77 12.91 18.52 23.78<br />
Es 3.708 5.470 6.386 5.512 2.949 4.277 4.750 6.591<br />
Modified GAB b 5.365 4.708 4.092 3.814 5.119 4.353 3.986 3.545<br />
c 0.847 0.893 0.919 0.928 0.841 0.896 0.912 0.921<br />
d 300000000 500000000 895.523 601.296 1087.733 1378.578 690.626 400000000<br />
R 2 0.966 0.978 0.969 0.997 0.969 0.985 0.993 0.961<br />
P 5.735 6.338 8.312 6.541 7.651 7.212 7.813 9.561<br />
Es 2.425 2.456 3.427 1.157 2.138 1.972 1.506 3.386<br />
Kuhn b -0.4732 -0.5842 -0.6671 -0.6980 -0.4362 -0.5725 -0.6093 -0.5824<br />
c 10.48 10.22 8.653 7.824 9.480 8.999 8.095 8.118<br />
R 2 0.8663 0.8459 0.8587 0.9201 0.8608 0.8934 0.8944 0.8605<br />
P 24.69 30.36 42.40 48.21 31.48 38.00 44.04 35.52<br />
Es 4.295 5.877 6.551 5.047 4.052 4.662 5.069 5.752<br />
Iglesias - Chirife b 0.474 0.585 0.668 0.699 0.437 0.573 0.610 0.583<br />
c 10.686 10.477 8.950 8.135 9.673 9.253 8.367 8.377<br />
R 2 0.865 0.845 0.858 0.919 0.860 0.892 0.894 0.860<br />
P 24.80 30.52 42.67 48.55 31.65 38.21 44.28 35.70<br />
Es 4.312 5.894 6.569 5.070 4.070 4.683 5.089 5.766<br />
Mizrahi b -10.69 -10.48 -8.950 -8.135 -9.673 -9.253 -8.367 -8.377<br />
c -10.21 -9.893 -8.283 -7.436 -9.236 -8.680 -7.757 -7.794<br />
R 2 0.865 0.845 0.858 0.919 0.860 0.892 0.894 0.860<br />
P 25.01 30.54 42.67 48.55 31.65 38.21 44.28 35.70<br />
Es 4.316 5.894 6.569 5.070 4.070 4.683 5.089 5.766<br />
Modified BET mo 2.939 3.329 3.468 3.492 2.690 3.147 3.186 3.086<br />
b 200000000 80000000 10000000 40000000 200000000 80000000 20000000 50000000<br />
R 2 0.596 0.743 0.841 0.916 0.608 0.814 0.867 0.828<br />
P 41.09 36.62 28.05 25.16 39.44 30.25 23.88 30.38<br />
Es 7.468 7.595 6.948 5.180 6.799 6.151 5.696 6.379<br />
Note: m o, b, c and d are constants.<br />
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