Research Article
Experimental Design and Optimization of Decolourization of Reactive Black-5 Dye Using Cloud Point Extraction
Table 2
Experimental results for optimization of RB-5 dye (25 ppm, 50 ppm, and 75 ppm) with TX-114 at various operating temperatures (40°C, 50°C, and 60°C).
| | Experimental results | Calculated results | Test | X1 | X2 | X3 | E (%) | Rv | Xs,d (ppm) | Xs,r (ppm) | E (%) | Rv | Xs,d (ppm) | Xs,r (ppm) |
| 1 | −1 | 1 | −1 | 23.923 | 2.881 | 0.031 | 0.455 | 23.120 | 2.674 | 0.042 | 0.388 | 2 | −1 | 1 | 1 | 34.577 | 3.734 | 0.238 | 0.796 | 34.910 | 3.664 | 0.065 | 0.739 | 3 | −1 | −1 | −1 | 36.389 | 3.734 | 0.263 | 0.897 | 35.369 | 4.166 | 0.301 | 0.918 | 4 | −1 | 0 | 0 | 36.441 | 4.384 | 0.359 | 0.911 | 39.632 | 4.105 | 0.453 | 0.967 | 5 | −1 | −1 | 1 | 63.657 | 6.383 | 0.454 | 0.987 | 61.955 | 6.221 | 0.511 | 0.949 | 6 | 0 | 0 | −1 | 64.131 | 12.108 | 0.480 | 1.012 | 64.003 | 12.253 | 0.536 | 1.185 | 7 | 0 | 1 | 0 | 67.404 | 13.636 | 0.681 | 1.219 | 64.568 | 13.854 | 0.668 | 1.208 | 8 | 1 | 1 | −1 | 67.782 | 15.741 | 0.795 | 1.297 | 69.776 | 15.745 | 0.862 | 1.344 | 9 | 0 | 0 | 0 | 72.755 | 17.924 | 0.886 | 1.603 | 73.144 | 17.636 | 0.809 | 1.621 | 10 | 1 | 1 | 1 | 73.381 | 19.048 | 0.897 | 1.819 | 74.692 | 18.614 | 0.879 | 1.832 | 11 | 1 | −1 | −1 | 78.961 | 18.765 | 1.208 | 2.020 | 78.919 | 19.237 | 1.142 | 1.964 | 12 | 0 | 0 | 1 | 80.792 | 24.378 | 1.222 | 2.141 | 79.754 | 24.061 | 1.433 | 2.047 | 13 | 0 | −1 | 0 | 80.992 | 25.945 | 1.589 | 2.528 | 82.662 | 27.324 | 1.533 | 2.317 | 14 | 1 | 0 | 0 | 85.655 | 30.548 | 2.453 | 2.542 | 81.298 | 30.023 | 2.406 | 2.608 | 15 | 1 | −1 | 1 | 97.536 | 36.986 | 2.853 | 2.864 | 98.631 | 36.597 | 2.832 | 2.941 |
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