Research Article
Biofunctional Characteristics of Lignite Fly Ash Modified by Humates: A New Soil Conditioner
Table 1
Chemical analyses of fly ashes.
| | Megalopolis | Kardia | | Fly ash | Bottom Ash | Fly ash | Bottom Ash |
| SiO2 a | 39.6 | 41.7 | 23.0 | 17.8 | Al2O3 a | 15.9 | 14.1 | 12.6 |
8.4 | Fe2O3 a |
8.53 |
8.47 |
7.5 |
3.58 | CaO a |
18.3 |
24.6 |
44.7 |
29.9 | MgO a |
2.75 |
4.10 |
3.58 |
2.39 | Na2O a |
0.484 |
0.58 |
0.33 |
0.19 | K2O a |
1.72 |
1.79 |
2.20 |
0.40 | SO3 a |
4.52 |
4.31 |
5.5 |
3.44 | pH b |
11.8 |
9.8 |
12.5 |
8.8 |
|
|
a% w/w,
b10% w/w in fly ash.
|