Table 3 Central composite matrix of real values along with experimental and predicted values for oil adsorption (%) of HC oil using Ch-Cit schiff base adsorbent.
From: Removal of oil spills by novel developed amphiphilic chitosan-g-citronellal schiff base polymer
Trial | Time (min) (X1) | Amount of oil (g) (X2) | Temperature (°C) (X3) | Oil adsorption (%) of chitosan-g-citronellal (Ch-Cit) schiff base | |
|---|---|---|---|---|---|
Measured | Predicted | ||||
1 | 0 (120) |  − 1 (0.5) |  − 1 (25) | 98.46 | 98.36 |
2 | 0 (120) | 1 (2.5) |  − 1 (25) | 85.56 | 85.04 |
3 | 0 (120) |  − 1 (0.5) | 1 (45) | 99.46 | 99.98 |
4 | 0 (120) | 1 (2.5) | 1 (45) | 91.97 | 92.07 |
5 |  − 1 (60) |  − 1 (0.5) | 0 (35) | 80.64 | 80.19 |
6 |  − 1 (60) | 1 (2.5) | 0 (35) | 66.03 | 65.99 |
7 | 1 (180) |  − 1 (0.5) | 0 (35) | 99.82 | 99.86 |
8 | 1 (180) | 1 (2.5) | 0 (35) | 92.39 | 92.84 |
9 |  − 1 (60) | 0 (1.5) |  − 1 (25) | 70.35 | 70.91 |
10 |  − 1 (60) | 0 (1.5) | 1 (45) | 78.05 | 77.98 |
11 | 1 (180) | 0 (1.5) |  − 1 (25) | 96.85 | 96.92 |
12 | 1 (180) | 0 (1.5) | 1 (45) | 99.05 | 98.49 |
13 | 0 (120) | 0 (1.5) | 0 (35) | 72.36 | 72.36 |
