Table 2 The 30 experimental designs
From: Green construction and release mechanism of lignin-based double-layer coated urea
No | Lignin content A (%) | –CNO/–OH molar ratio B | Amount of EP C (%) | Coating ratio D (%) |
|---|---|---|---|---|
1 | 50 | 1.15 | 5 | 5 |
2 | 50 | 1.15 | 35 | 5 |
3 | 30 | 1.00 | 50 | 7 |
4 | 50 | 1.15 | 35 | 5 |
5 | 50 | 1.15 | 35 | 9 |
6 | 50 | 1.15 | 65 | 5 |
7 | 30 | 1.30 | 20 | 7 |
8 | 70 | 1.30 | 20 | 3 |
9 | 50 | 1.15 | 35 | 1 |
10 | 90 | 1.15 | 35 | 5 |
11 | 30 | 1.00 | 20 | 3 |
12 | 70 | 1.30 | 50 | 7 |
13 | 70 | 1.00 | 20 | 3 |
14 | 50 | 1.15 | 35 | 5 |
15 | 70 | 1.00 | 50 | 3 |
16 | 70 | 1.00 | 20 | 7 |
17 | 30 | 1.30 | 50 | 7 |
18 | 10 | 1.15 | 35 | 5 |
19 | 30 | 1.30 | 50 | 3 |
20 | 70 | 1.30 | 50 | 3 |
21 | 70 | 1.30 | 20 | 7 |
22 | 30 | 1.00 | 20 | 7 |
23 | 30 | 1.00 | 50 | 3 |
24 | 70 | 1.00 | 50 | 7 |
25 | 50 | 1.15 | 35 | 5 |
26 | 50 | 1.15 | 35 | 5 |
27 | 30 | 1.30 | 20 | 3 |
28 | 50 | 1.45 | 35 | 5 |
29 | 50 | 1.15 | 35 | 5 |
30 | 50 | 0.85 | 35 | 5 |