Research Article
Investigation of Influential Parameters in Deep Oxidative Desulfurization of Dibenzothiophene with Hydrogen Peroxide and Formic Acid
Table 3
Coded and actual levels of variables with corresponding responses (initial sulfur concentration = 250 ppmw).
| Experiment no. | Coded level of variables | Actual level of variables | Responses | | | | | | | S removal (%) | S (ppm) |
| 1 | −1 | −1 | 0 | 2 | 50 | 20 | 95 | 12.5 | 2 | 1 | −1 | 0 | 28 | 50 | 20 | 100 | 0 | 3 | −1 | 1 | 0 | 2 | 150 | 20 | 85 | 37.5 | 4 | 1 | 1 | 0 | 28 | 150 | 20 | 100 | 0 | 5 | −1 | 0 | −1 | 2 | 100 | 2 | 91 | 22.5 | 6 | 1 | 0 | −1 | 28 | 100 | 2 | 100 | 0 | 7 | −1 | 0 | 1 | 2 | 100 | 38 | 93 | 17.5 | 8 | 1 | 0 | 1 | 28 | 100 | 38 | 100 | 0 | 9 | 0 | −1 | −1 | 15 | 50 | 2 | 98 | 5 | 10 | 0 | 1 | −1 | 15 | 150 | 2 | 97 | 7.5 | 11 | 0 | −1 | 1 | 15 | 50 | 38 | 99 | 2.5 | 12 | 0 | 1 | 1 | 15 | 150 | 38 | 100 | 0 | 13 | 0 | 0 | 0 | 15 | 100 | 20 | 100 | 0 | 14 | 0 | 0 | 0 | 15 | 100 | 20 | 100 | 0 | 15 | 0 | 0 | 0 | 15 | 100 | 20 | 100 | 0 |
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